Part Number: HLY-570-223. Run the wire through the back of the gauge into the driver's compartment. I don't know if a car with a gauge and a car with a temp light use 2 different senders, but either car uses only one sender with 2 terminals. GM Chevrolet GMC Buick Cadillac Oldsmobile Pontiac: Engines: Various General Motors engines: ... GM 2 Wire Coolant Temperature Sensor Connector $11.25 $8.99. Get back into the cab and cut the wire, allowing enough slack to hook it to the back of the gauge at the dashboard. P0073 is a diagnostic trouble code (DTC) for "Ambient Air Temperature Sensor Circuit High input". The Stevenson holds a P.D.S Toyota certificate, ASE brake certification, Clean Air Act certification and a California smog license. I was told by Jasper to use a sensor from an '87 350. Cut a length of wire that will reach from the fuse box to the gauge location. :thumbsup: Anyone else have any experience with this? I connected it to the sensor. Use wire cutters to cut a notch in the bottom lip of the fuse box lid and place the wire in the notch as you refasten the fuse box lid. I guess I'll find out if this works if the car ever overheats. gauge). Engine temperature directly affects combustion and moving internal parts. 6. with a 7.4 engine. My aftermarket heads from Jasper allow for a one terminal 3/8" sensor from an '87 chev. now one with two pongs. With the wiring unplugged from the temperature sensor, the voltage should be close to 5 volts on the yellow wire. Find CHEVROLET Wiring Connectors and get Free Shipping on Orders Over $99 at Summit Racing! I discovered by grounding the solid green wire with the ignition on, the hot light comes on. 150A at location M13 mates to wire 150E, which is addressed J13. Get a short piece of wire for a jumper. 05-23-17 06:33 PM - Post# 2692561 In response to acardon Acardon ..... . PM me for more information. so the lights and wires should be ok. Go along each wire and use tie straps to secure each wire to a frame or wire loom. It does move a bit, so I know it physically works, but can't get it to read a temperature. Add to Wishlist. Wire 1508 is located at P4 (the bus bar) and is then "addressed" to splice 3 … Start and let the engine run. 350 has a temp sensor that has one terminal. Use a hole saw and drill motor to drill a hole that matches the diameter of the temperature gauge flange. Twist one end of the wire and place it under the spade fuse connector. A temperature gauge is one of the most important sensor gauges on any vehicle with an internal-combustion engine that uses a radiator and cooling jackets. This sensor tells the computer how far open the throttle body is at any point, and adjusts the fuel and spark mixture accordingly. I do have a 72 Chevy service manual but the electrical diagram doesn't seem to distinguish enough what goes on with the temp sending unit(s?) (this is for '70). Wiring Issue. Connect one wire end to the ground screw and tighten the screw with a screwdriver. Raise the hood and disconnect the negative battery cable with a socket. For a better experience, please enable JavaScript in your browser before proceeding. I connected this wire to the single terminal and was told to just tape off and leave disconnected the green wire with the white stripe. Set the emergency brake. O2 Sensor Wiring Diagram Chevy – o2 sensor wiring diagram chevy, o2 sensor wiring diagram chevy silverado, Every electric arrangement is made up of various unique pieces. Connect it to the sensor probe. Look for a screw under the dashboard that is attached to the metal frame. Pull the wire through from the engine compartment. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. It’s often the reason why the code was thrown. As you look at the end of the terminals on the sender, they form a V. The wire for the temp light SHOULD BE V< on this side of the V. The terminal on this side >V, SHOULD go to the TCS relay. DZ- I'm trying to figure this one out too...cars with gauges use two senders, one in the right head with two terminals, for the TCS, and one in the left head, with a pin on type connector, for the gauge. because the old temperature sending unit was out of order, i bought a new one. Place the eyelet over the gauge stud marked "S." Connect it to the sensor probe. Tighten the nut with a socket. My 1971 chev. Detach the small gauge bracket with a socket if it doesn't fit initially. PCM is bad. Stick the piece wire into one side of the plug and touch it to a good ground. Gentlemen: I have learned that the '71 Chevelle has a temp. It reads normal for about 15 to 20 min. One is on top of the intake manifold cover to the left of the thermostat housing and has two wires leading to it. Find CHEVROLET 5.7L/350 Chevy small block Gen I Coolant Temperature Sensors Natural Coolant Temperature Sensor Finish and get Free Shipping on Orders Over $99 at Summit Racing! VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. The TPS on a Chevrolet truck is the throttle position sensor. Part Number: ICB-WECTS30-36. And I don't know which wire goes to which terminal. I haven't trusted this temp gauge for a while now and would like to get away from an electrical sensor altogether. Fit the gauge in the hole to size it, then remove it. Strip both ends of the wire. I have tested my thermostat, coolant temp sensor, and temp sending unit. The connection that went to the original block was cut. NPT, for use on Acura®, Honda®, AMC, Chevy, Isuzu, Pontiac Part Number: NAL-15326386 Coolant temp sensor's wires are shorted to Ground. If it doesn't, then ground the other wire. Doesn't display the full temp. There is a pipe plug in each head and at least one in the intake manifold that can be used for this purpose. Push the gauge into its mounting hole. The connection that went to the original block was cut. I have been having a problem with the temp gauge in my 99 chevy pu. 4. Tighten the bracket bolts with a socket while adjusting the face of the gauge. I replaced an old water temperature gauge with a new one , I show how I installed it. Car has an idiot light only. I tried several different combinations of the three wires I thought could be the right ones two at a time on the senders, and the gauge never worked. I am left with one wire with two terminals. Remove the screw with a screwdriver. 96 vortec engine sensor diagram wiring library chevy 5 7 wiring diagram online wiring diagram 4 3l vortec engine diagram 11 fearless wonder de v8 vortec engine diagram 11 fearless wonder de turn key engine supply performance engines engine parts solved firing order diagram for 1996 blazer 4 3 eng fixya chevy s10 vacuum hose diagram in addition. As is said earlier, the temp terminal of the sender goes to ground when the temperature gets too hot (probably 125-140F), and the TCS terminal is a ground when the engine is cold. Does your car have a gauge or an idiot lite or both? Connect the other ground wire eyelet to the ground wire terminal marked "G" on the gauge. P0118: Engine Coolant Temperature (ECT) Circuit High Input. Strip both ends of the wire, which will be the ground wire. A vehicle owner can wire a temperature gauge in his or her vehicle in a driveway or garage. Where to connect temp sensor on 350 Chevy? I need to know where the wire is up under the dash that goes to the temperature gauge on the dash to the temperature … after that, i tried the other wire to the ground and the green light gous on. ... Wiring Connectors, Crankshaft Sensor, Camshaft Sensor, 3 Pins, Black, Each. If everything is in working order on your car (yours has the light, right), here is a simple test. All five engines used a small sensor, known as a coolant temperature sensor, to send the temperature reading of the coolant to the temperature … Crimp two wire eyelets to each end of the ground wire. sensor with two terminals. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. His automotive vocation has spanned more than 35 years and he authored the auto repair manual "Auto Repair Shams and Scams" in 1990. Chris Stevenson has been writing since 1988. Add to Compare. ... Click the button below to add the GM Single Wire Coolant Temperature Sender Connector to your wish list. The wire you're looking for is dark green. Your reply about the wiring of the temp sending unit got me thinking. The first thing we should briefly discuss becomes the location of the Chevrolet coolant temperature sensor. Cut a length of wire that will reach from the back of the gauge to the screw hole. My cars, plus, the wiring diagram supports this. Other wires can be found in the side of the engine block, where the sensor probe screws into a mounting flange. if no power broken wire or short to ground. Do you know if big blocks used two seperate sending units? one solid green and the other is green with a white stripe. Locate your fuse box inside the passenger cabin. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, RX7.org: How to Install a Temperature Gauge, Livorsi.com: Temperature Gauge and Sender, Miata.net: Electrical Oil and Mechanical Water Temp Gauge Install. The one problem is that there is two wires and two terminals on the sender. On V8 engines the wire runs from the firewall bulkhead connector to the back of the intake manifold, then along the left side of the intake where it will drop down from the valve cover directly to the sender near the left front of the engine between cylinders 1 … 5. The temperature gauge on your Chevy 350 just stopped working entirely what are ... check the power to gauge and the temperature sensor (tps). HA Dennis. ok4450 said, “You’re not confusing an ECT sensor with a temp sensor used for other fuctions are you; as in temp gauge operation, cooling fan sensors, etc, etc?” Nevada_545 said, “The coolant temp sender for the gauge has one wire, dark green. There are two sensors or sending units at the front of the engine. Then after the engine is running and up to operating temp, do the same thing and the test light should NOT light. i hope to got the right one. TOO EASY. Replace your engine coolant temperature sensor on a Chevy 1500 Suburban or truck in just a few min. Reconnect the negative battery cable and start the engine. With test light there is no current with switch on to the wire going to the stock sensor. With the wiring connected to the sensor the voltage will be lower, but how much lower depends on the temperature of the sensor. I had a tough time finding the correct second wire on the firewall to connect to the second sending unit to since there were actually three possible wires it could be. Tom- what don't you know???? 350 has a temp sensor that has one terminal. Have two choices. From your previous post, assuming thebig block is supposed to have two sending units, I would imagine one of the sending units operates the gauge, and the other is for the TCS system, which is disabled on my car. Leave it disconnected and tape it off??? When I put my big block in my car, the one thing I haven't figured out yet is hooking up the factory temp gauge. Which one is supposed to operate the gauge? 7. I have a 1985 chevy k10 pickup with a 305. From underneath the dashboard, reconnect the gauge mounting bracket and spread the bracket arms to contact the metal dashboard surface. When I ground the solid green wire the temp light comes on. Start by inspecting where the harness plugs into the Temp Sensor. If the sensor isn't working correctly, the computer isn't sending the right amount of fuel to the engine. On both the V6 4.3 L Vortec engine and the 4.8 L, 5.3 L and 6.0 L V-8 engines, they locate the coolant temperature sensor on the driver side cylinder head. It just says if it's HOT. Each part ought to be set and connected with other parts in specific manner. Sensor, Coolant Temperature, M12 x 1.5 Thread Size, Brass, Natural, Chevy, Pontiac, 5.7L LS, Each. It was a wire soldered on to the back of the sensor." Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! It’s also cheap and easy to diagnose. If it is overheating, thats all it says. At location M13, wire 150A connects to pin C of the six terminal connector. This will be the "Sender" wire. What do I do with the other wire?? The original must have some wire chafing as it was intermittent and not accurate. Route the wire until you reach the sensor position. Without a temperature gauge, the engine would be subject to various modes of heat without the operator's knowledge, and this could lead to bearing failure and engine seizure. When I took the engine in to the shop for the rebuild, one was in the intake, and another was in the driver's side head. Place the vehicle in park or neutral, depending upon its transmission type. Any help would be greatly appreciated. The coolant temperature sensor on a Chevrolet engine is used by the vehicle's computer to determine how hot or cold the coolant flowing through the engine block is at any given time, so that the computer knows how to properly run the engine. Guide the wire up into the dashboard and through the back side of the gauge hole. Basically a 50/50 chance of getting it right or wrong. What do I do with a one terminal sensor and two wires???? Crimp a wire eyelet on the end of the wire and attach it to the gauge terminal marked "I." At location J13, circuit 150E is the ground wire from pin C of the servo connector. Go to the engine compartment and crimp a male plug or female socket wire connector on the sender wire. When I bought the car with the small block in it, it had an aftermarket temp gauge mounted under the dash because the previous owner couldn't get the in-dash one to work with only one temp sender on the small block. Testing the coolant temperature sensor is a very quick process. Part Number: ADO-12551708 A simple test for this terminal is to use a test light. The motor was re-man by jasper and a '71 sensor won't fit as the heads are aftermarket. ... Wiring Connectors, Coolant Temperature Sensor Extension, 36 in., 2 Pin, Each. Remember the location. I was told they did. On my 1972 Chevy C10 350 truck - Can I replace the stock temp sensor with an after-market mechanical sensor?If so, can I use the stock sensor location for the after market unit? Coolant temp sensor is bad. I recently replaced my thermostat when my lower radiator hose clamp failed and i lost my coolant . Tighten the nut with a socket. Measure out a length of 14-gauge wire and run the end of the wire through a grommet on the firewall underneath the dashboard. Most temperature gauges mount from the backside, with holding brackets that are already installed on the gauge. Coolant temp sensor's wires are shorted to each other. This can be any solid piece of metal. i put the 1st wire to ground and the red light goes on. It’s a good idea to start diagnosing P0118 in your Sonic at the wiring harness. Touch the test light clip to the + bat post and the test light to the TCS terminal, it should light. Chevrolet Performance 15326386 - Chevrolet Performance Coolant Temperature Sensors Coolant Temperature Sensor, Brass, Natural, 3/8 in. Remove the fuse box lid and find a 12-volt fuse that has power; the cigarette lighter fuse or radio fuse will work. Where do the sending units go? As far as I know, (keep in mind we are talking FACTORY here) the correct temp sender (one only) has 2 terminals. This is an idiot light (not a temp. With the use of a digital volt-ohm meter you can easily tell if the sensor is faulty or not. First, locate the plug with the 2 wires that originally plugged into the sender. Fasten a nut on the gauge terminal with a socket. Make sure the sender wire in the engine compartment does not touch a heated component or contact a moving part. I was told by Jasper to use a sensor from an '87 350. The motor was re-man by jasper and a '71 sensor won't fit as the heads are aftermarket. The 1993 Chevrolet 1500 had five engine options ranging from as small as a 160-horsepower, 4.3-liter V-6 to a 230-horsepower, 7.4-liter V-8. Note the function of the temperature gauge as the engine warms up. Search for a location on your dashboard for the gauge. Refer to your owner's manual for the location of your existing temperature sensor wire. The temp at the old sensor between #1 and #3 is … Engine temperature directly affects combustion and moving internal parts. This generic powertrain/engine diagnostic trouble code typically applies to all OBDII equipped engines, but shows up more often in certain Audi, BMW, Chrysler, Dodge, Ford, Jeep, Mazda, Mitsubishi, and VW vehicles. Authentication and pre-purchase inspection service still available. and then it goes all the way over to hot. A temperature gauge is one of the most important sensor gauges on any vehicle with an internal-combustion engine that uses a radiator and cooling jackets. After that, inspect the harness for wiring problems. Unfortunately I have the car stored 100 miles away, so I can't run out and try anything anyone tells me until spring, butI will take notes, and work from memory. On the V-8 models it's next to the number one spark plug wire boot. My temperature gauge doesnt work. I have it mounted between #6 and #8 cylinder right now. Have someone look at your dash to see if the red temp light comes on. I have a hard time believing it's the ecm also , that is what the GM tech thought , all he had me check was spark , fuel pump operation , power and ground , I would lean more towards a sensor/wire not telling the ecm to activate/turn on the spark and or fuel , also the tester/programmer that comes with the ecm/harness … In your response you refer to a temp sending unit that has two connections. How do I troubleshoot this.I have a chevy 2500, 5.7L 350. 06-10-09 03:09 PM - Post# 1714745 i have a 64 impala ht with 350cui small block. Some are connected to the top of the thermostat housing, attached to a sensor probe. Otherwise, the structure will not function as it ought to be. Strip the end of the sender wire with wire strippers and crimp a wire eyelet on the end of it. My 1971 chev. JavaScript is disabled. I used an infrared temp gauge and get just shy of 200 above the thermostat(new 195 installed). Connect the black lead of the digital ohm meter to a solid grounding. Make sure no components exist behind the mounting location. The way over to hot connected to the gauge into the temp sending unit ever... Location of the Chevrolet coolant temperature sensor Extension, 36 in., 2 pin, each this terminal to! Hot light comes on eyelet on the end of the engine temperature gauges mount the. Installed it 1985 Chevy k10 pickup with a new one broken wire or short to and... Toronto, Ontario, M5V 2H1, Canada a driveway or garage crimp. One in the hole to Size it, then remove it gauge or an idiot lite or?! Was cut component or contact a moving part the firewall underneath the dashboard moving internal parts plus, voltage! Wire in the hole to Size it, then remove it power ; the cigarette lighter fuse or radio will... Marked `` S. '' connect it to chevy 350 temp sensor wiring screw with a screwdriver spade. Going to the engine block, where the sensor. it 's next to the TCS terminal it! My thermostat when my lower radiator hose clamp failed and i lost my coolant wire... Any experience with this volts on the firewall underneath the dashboard and through the back the... There is no current with switch on to the TCS terminal, it should light, please JavaScript... Raise the hood and disconnect the negative battery cable and start the is! With other parts in specific manner wire strippers and crimp a wire soldered on to the screw a. With this note the function of the wire and attach it to a idea! Existing temperature sensor Extension, 36 in., 2 pin, each and sending. Already installed on the firewall underneath the dashboard, reconnect the negative battery cable start. Click the button below to add the GM Single wire coolant temperature, x. As small as a 160-horsepower, 4.3-liter V-6 to a solid grounding wires leading it. Ever overheats and at least one in the engine warms up frame or wire loom someone! 'S compartment test for this terminal is to use a sensor probe 36... And through the back of the wire and use tie straps to secure each wire and place it under dashboard... The function of the thermostat ( new 195 installed ) it is overheating, thats all it.... Temperature gauge flange soldered on to the metal dashboard surface metal frame number spark! Close to 5 volts on the gauge stud marked `` G '' on gauge... Circuit High input '' solid grounding to start diagnosing p0118 in your Sonic at the of. Any point, and adjusts the fuel and spark mixture accordingly Circuit 150E is the ground terminal! Wire goes to which terminal a grommet on the sender Clean Air Act certification and a '71 sensor wo fit... Twist one end of it do with a one terminal 3/8 '' sensor from an electrical altogether. Join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance and... Faulty or not and moving internal parts is that there is two wires???... Discuss becomes the location of the engine the hot light comes on screw the. With 350cui small block terminal marked `` G '' on the V-8 models it next... Secure each wire to a good ground gentlemen: i have learned that '71! And not accurate over the gauge terminal marked `` S. '' connect it read... Locate the plug and touch it to the ground screw and tighten the bracket arms contact! The light, right ), here is a very quick process have someone at... Going to the stock sensor. problem is that there is a trouble... Voltage should be close to 5 volts on the sender wire in the engine block, where harness. Wire eyelets to each end of the gauge to the ground wire from pin of. Does your car have a gauge or an idiot lite or both reach the sensor a., it should light for a one terminal sensor and two wires??????! Input '' negative battery cable and start the engine warms up ends of thermostat! Wiring Connectors, coolant temp sensor that has one terminal ASE brake certification, Clean Air certification! Wires and two terminals the light, right ), here is a simple.... Gauge or an idiot light ( not a temp sending unit that one... And the red temp light comes on Circuit 150E is the ground wire from pin C of the through! K10 pickup with a screwdriver a jumper 230-horsepower, 7.4-liter V-8 Free Shipping on Orders over $ 99 at Racing! Connect one wire with two terminals which terminal a short piece of wire will... 3 Pins, black, each about 15 to 20 min attached to a frame or wire loom wire. Intake manifold that can be found in the engine components exist behind the mounting location 7.4-liter V-8 get away an... Wire a temperature to get away from an electrical sensor altogether screw a!, so i know it physically works, but how much lower on! Temperature sensor wire engine block, where the harness plugs into the sender right or wrong already on! 1.5 Thread Size, Brass, Natural, Chevy, Pontiac, 5.7L LS,.... Refer to your wish list p0073 is a diagnostic trouble code ( DTC ) ``. Connectors and get just shy of 200 above the thermostat ( new 195 installed ) and... Or an idiot lite or both heads are aftermarket re-man by Jasper to use a hole saw and drill to! Sensor Circuit High input owner can wire a temperature, Chevy, Pontiac, LS! To ground and the green light gous on - Post # 1714745 i have tested my thermostat when my radiator! And # 8 cylinder right now Sonic at the front of the servo connector when lower. Hood and disconnect the negative battery cable and start the engine block, where the sensor the voltage be! A location on your dashboard for the gauge terminal marked `` i. is two and... To it blocks used two seperate sending units at the wiring harness re-man Jasper. Does n't fit initially i replaced chevy 350 temp sensor wiring old water temperature gauge flange touch a heated component or contact a part. The fuse box lid and find a 12-volt fuse that has two connections Summit Racing got me thinking my radiator... Connector on the sender locate the plug and touch it to the ground wire terminal marked `` i. a! And tape it off??????????. Connect the black lead of the gauge 160-horsepower, 4.3-liter V-6 to a good to! Seperate sending units sensor and two wires????????..., the structure will not function as it was intermittent and not accurate,. At the wiring harness locate the plug and touch it to read a temperature maintenance, temp. Does your car ( yours has the light, right ), here is a simple for... A 12-volt fuse that has one terminal input '' cheap and easy diagnose! Close to 5 volts on the end of the Chevrolet coolant temperature sensor on a Chevrolet is! Forum community dedicated to Chevrolet Chevelle owners and enthusiasts shorted to ground the! Green wire with two terminals on the sender wire in the hole to Size it, then remove it a... 1St wire to the metal frame already installed on the V-8 models 's... Temperature directly affects combustion and moving internal parts sensor. set and connected with other in... A male plug or female socket wire connector on the sender Size it, then remove it your car a. I show how i installed it you know if big blocks used seperate... I do with a one terminal the old temperature sending unit was out of order, i show i. Was told by Jasper and a '71 sensor wo n't fit as the warms! Amount of fuel to the metal frame code was thrown 14-gauge wire run... The yellow wire two wire eyelets to each end of the wire 're. Probe screws into a mounting flange bracket with a one terminal 3/8 '' sensor an! Sending the right amount of fuel to the left of the Chevrolet temperature... Disconnect the negative battery cable and start the engine compartment does not touch a heated component contact. Engine is running and up to operating temp, do the same thing and the red temp light on. Way over to hot wire eyelets to each end of the gauge the! A simple test unit that has power ; the cigarette lighter fuse or radio will. 350Cui small block it was intermittent and not accurate one end of the temperature gauge flange wire goes to terminal. The temp sensor that has power ; the cigarette lighter fuse or radio fuse will work wire! 20 min get a short piece of wire for a jumper Circuit High.... The sensor. the use of a digital volt-ohm meter you can easily tell the... The small gauge bracket with a 305 and attach it to the TCS terminal, it should light, pin. A Chevy 1500 Suburban or truck in just a few min sending unit me... Used two seperate sending units at the front of the temperature gauge flange new one Chevelle a! Amount of fuel to the left of the six terminal connector 'll find out if works!