I am in the process of troubleshooting a crappy idle on my 99GTP and I wanted to check the cam position sensor but I have no idea what it is used for. I was wondering if a gm tech could possibly get a list of all the sensors used on our cars and a description of how they work and what they do? The possible make a sticky out of them for future troubleshooting?

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Red 2dr 99 GTP: Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner

99 Regal GS (work car)

sounds like a very good idea

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Steve
'97 GTP VS cam, ZZP PCM, and not much else yet

I think that is an excellent idea. If someone takes up the challenge then I'll sticky it, if not I'll see what I can dig up.

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

I kind of tried searching the web, but I am not very good at it and didn't find what I want. The reason I said GM tech is because they have access to all of the GM info.

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Red 2dr 99 GTP: Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner

99 Regal GS (work car)

I think if we all collaborate together we can make said list, I'll start:

Cam Sensor- Hall effect? -used for injector timing
Crank sensor- Hall effect - two parts, one used for timing, other used for Tach and Traction control
Intake air Temp-thermistor- Used to help fueling by telling pcm intake air temp
Mass Air flow - ??? - sends a Frequency that equates to mg/sec of air the engine is ingesting, used for fueling
Throttle Position Sensor- Potentiometer - used to tell the computer how open the throttle plate is and also the speed it moves can be measured, used for transmission shifting and fueling
Manifold Absolute Pressure(MAP) - used to run engine during maf failure, also used to aid in fueling and judging engine load
Coolant Temp. Sensor- Used to tell the temp of the engine through the coolant, assists in fueling(by telling when it is warm enough for closed loop operation)

There are many more, and if any of above are wrong/ need to be erdited please let me know

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2002 GT...Wizardair, ZZP 2.5 o/r dp, Special Eddition two-tone leather interior added, HUD added, 12" Brake Upgrade, ZZP strut tower bars, gmpp sway bars,-6an braided SS fuel hoses , Hptuned, Top Swaped.....
I've got Boost!! I've got only 1.5* KR left my poor L36 block.....

Ok, now that 02BueGT gave that list what I want to know now is what happens when the cam sensor fails or what should happen when unplugged.

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Red 2dr 99 GTP: Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner

99 Regal GS (work car)

If the cam sensor fails, most times you will get a SES light. But not always. But if it does fail, you will probably experience bad timing.

But...I don't see this going bad very often. So I highly doubt this is your problem.

Post up your symptoms and we will see if we can help you.

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1997 GTP - 200k+ miles, PEMs, 3" SS Exhaust w/ Borla Mufflers, 3.4", 180* stat(summer), FWI, 1.84 RR, PT, SLP hood, KYB GR2s, GMPP Handling Kit, etc...

I will post a thread in the L67 section.

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Red 2dr 99 GTP: Z7 t66, A/A IC'd, Custom Heads, 65# Inj, ST2 Cam, Meziere Elec Pump, JP Double Roller(with machined crank gear), Plogs, PLX W/B, Powrtuner

99 Regal GS (work car)

Here is a little information on a Cam Sensor:


The Hall-Effect Sensor

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Scotty Hall
Bartlesville, OK
2001 Pontiac Grand Prix GTP
It whines a lot, but I like it.

The only limitation you will ever face in life is yourself!

Remove the Mass airflow sensor and GENTLY clean the heated wires with a can of carb, brake or MAF cleaner. I have seen a lot of dirty MAF's make a car run really funny. You will need a tamper proof torx to remove the sensor.