1. Fuel pressure regulator 2. Idle Air Control Motor (IAC) 3. Mass Airflow sensor(MAF)
4. Throttle Body 5. Throttle Position Sensor (TPS) 6. Fuel Injector
7. PCV Valve 8. Coolant Temp sensor (ECT) 9. Evap Purge Solenoid
10. Egr Valve
| Typical engine data sensor and control component locations on the GM 3.8 3800 v6 engine. Exact location may vary depending on vehicle year / make / model. Click on number for a description of the component. |
| A few related auto repair questions and answers. |
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1999 Buick Park Avenue check engine light.
More information on the 3800 engine.
| 11-23-10 where is the vehicle speed sensor. |
Comments
| In most cars, the vehicle speed sensor is located in the tail shaft housing of the transmission. This is where the axle comes out on the passenger side of the trans. On front wheel drive cars. Best viewed from under the car. |
| 1-5-11 where is the map sensor on this 3800 GM v6? |
| The MAP sensor is located in position seven on the picture. The MAP sensor is on top with an electrical connector. The PCV valve is under the sensor. The sensor and the retainer unscrew from the manifold, and the PCV is inside. |
| 1-30-11 where is the DPFE sensor? |
| DPFE sensor is not a sensor that any GM gas vehicles use. |
| 1-30-11 where's the PCV valve located on a 3800 supercharged engine? |
| On the supercharged, it is located under a square metal plate, in similar location as EGR valve on the non-supercharged. See Above. |
| 1-31-11 Where is the Ambient Air Temperature sensor located at? |
| That sensor is located on the front core support, in front of the radiator. Left or right side depending on make, model, and year vehicle. |
| 2-13-11 where is the cam shaft position sensor at. |
| On the 3800 V6, the camshaft position sensor is located behind the water pump pulley. If you were to look at the pulley straight on, it is at about the 9 o'clock position. |
| 3-4-11 Where is the crank sensor located at. |
| The CKP- Crankshaft Position Sensor, is located behind the crank pulley, It will need to be removed to get to the sensor. |
| 3-4-11 2004 Buick Lesabre 3800 v-6. Temperature gauge needle laying down to the right past the H. Only moves,jumps a quarter of a inch when ignition is turned on. Bad temperature sensor? |
| The temp sensor only gives a reading to the gauge with the key ON, so this is most likely an instrument panel cluster (gauges) problem. |
| 3-19-11 Ok I replaced that temperature sensor in the photo above, and the new one I got had just two terminals, while the old plug has three receptacles. |
| Sounds like the parts guy gave you the wrong sensor. Some cars have 1 for the gauge or light, and another for the computer. |
| 4-15-11 Where are the air bag sensor location(s)? |
| That depends on which airbag sensor you are referring to, and what make, model and year. |
| 4-27-11 can I replace the three wire connector going into the MAP sensor |
| Yes, you can either buy a new connector with wire leads in it, or go to a junkyard and cut a harness to get the connector you need. |
| 4-28-11 thanks for the info. Awesome site. You do a great job |
| 5-3-11 where is the modification switch on 95 olds. 88 3.8L. |
| I have never heard of a switch even close to the name you are asking about. |
| 5-8-11 ok water pump went out shredding the belt and unplugging the camshaft position sensor put in new water pump and belt and plugged the sensor back in but it wont start does that mean its out of time and if so how do you re time 95 pontiac transport |
| 5-10-11 Those vehicles don't get out of time easily. Since the cam sensor got unplugged by the stray belt, you probably have something wrong with either the sensor or wiring harness, or even both. I'd check the connector to make sure it didn't get damaged, or any terminals that may have been pulled out or backed off. There could be a broken wire inside the harness that runs down the engine from when it broke. It has to be something related to the failure and repairs made. Double check your work and look for the previously mentioned problems |
| 6-16-11 There are 2 other sensor where my MAF sensor is what are they |
| 6-15-11 I have a series III 3.8 non S/C has a very strong vacuum in crank case.. Hard suction when removing oil cap... Replace PCV valve and seal and spring.. Problem still there.. |
| There would be a Intake Air Temperature sensor that is located in the rubber boot to the throttle body. And depending on the year of your vehicle, there could be an Idle Air Control Valve, that is just past the MAF sensor and on the throttle body. |
| If the PCV valve and O rings are not the problem, then the lower intake manifold gaskets probably are causing your problem. |
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3800 V6 Engine Sensor Locations
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| 11-5-11 I have a 2003 Pontiac Bonneville and it had a check engine light on that read TPS sensor low voltage. I cleared the code and the engine died and won't start anymore. What should my absolute TPS % be without engine running? Mine is 0.0 which I don't feel is right.thx in advance |
