crankshaft position sensor, '01'

[jtiderencel]

the boy's 01 grand prix may need a new cps, no book to look at to find out how to change it. need to know how, and the does and don't.

2001 grand prix sc
3.8 L

[GTPWarrior]

Originally Posted by jtiderencel

the boy's 01 grand prix may need a new cps, no book to look at to find out how to change it. need to know how, and the does and don't.

2001 grand prix sc
3.8 L

Here are some instructions that will help you get to the sensor.I found this from a cam installation

Have to remove the belts and you should know how to remove the wheel so I'm not going to cover that!

First thing, we will be removing the crankshaft pulley.

First, we need to remove the bolt that is in the center of the pulley. Mine was on VERY tight and I had to use a newly rebuilt, VERY POWERFUL, impact to take it off. Even then, it was a struggle. The picture below shows the bolt already removed and sitting on the passenger side strut tower. It is the large one with some orange on it.

The passenger side strut tower with the crankshaft dampener bolt sitting on top.




Now to remove the pulley itself. For this, we will be needing another J-Tool. This is a pulley puller that is made specifically for removing the crank pulley. Do not try to use a supercharger pulley puller! It will not work.

The pulley puller, as shown in the picture below, has three small bolts that go through the crank pulley and screw in to a piece deep within the engine. The larger bolt is what is used to pull the pulley off and it goes through the puller and into the place where you just removed the large crank pulley bolt. On the puller tool, you will also notice a small tab that sticks up. This needs to be lined up with a small slot that is on the pulley. After that is lined up, put the three small bolts on and tighten them down. Then put the larger bolt in and tighten it down until the pulley is pulled off. Note: When removing the crankshaft dampener it may be necessary to use some kind of flywheel tool to keep the engine from turning while removing the dampener bolt (the big bolt in the middle of the pulley).


The crankshaft dampener puller tool (J-38197-2)

After you get the dampener off you will see the CPS,just remember that this was taken from another set of instructions so I tried to get the info that might help you out and here is a pic of the CPS.If I missed anything I hope others will add to what I may have missed...good luck!

~Larry~

CPS

[BNaylor]

Originally Posted by jtiderencel

the boy's 01 grand prix may need a new cps, no book to look at to find out how to change it. need to know how, and the does and don't.

2001 grand prix sc
3.8 L

CPS may be bad?? What are the symptoms or any odb-ii DTC error codes, ses light? How many miles on the GP?

[BIG-L]

Here are some better instructions with picture's Click Here


~Larry~

[GTPWarrior]

Originally Posted by bnaylor3400

CPS may be bad?? What are the symptoms or any odb-ii DTC error codes, ses light? How many miles on the GP?

No ses, no codes big symptom is car shuting off and tach meter jumping.

[BNaylor]

Originally Posted by GTPWarrior

No ses, no codes big symptom is car shuting off and tach meter jumping.

Yeah! Sounds consistent with a defective CPS. Good luck with the repair.
Big-L's instructions are outstanding. He's da man!

[GTPWarrior]

Originally Posted by bnaylor3400

Yeah! Sounds consistent with a defective CPS. Good luck with the repair.
Big-L's instructions are outstanding. He's da man!

mines not bad I thought you was asking what to look for.

[BNaylor]

Originally Posted by GTPWarrior

mines not bad I thought you was asking what to look for.

Not a problem Warrior. Mine aren't bad either. Just throwing in my 2 cents. Thanks, anyways!

[jtiderencel]

trac off light comes on, tac 0, stalls. after runing awhile, turn off engine then it won't restart the boy says that is getting worse. gp has 65,000 miles on it. in the near furture we'll have to repace the cps. GTPWarrior thanks for info, but the pic did not come through on your post. did what you said and i got BIG-L pic, [thanks BIG-L]. tell you guys what happen in the furture.

jt

[GTPWarrior]

Originally Posted by jtiderencel

trac off light comes on, tac 0, stalls. after runing awhile, turn off engine then it won't restart the boy says that is getting worse. gp has 65,000 miles on it. in the near furture we'll have to repace the cps. GTPWarrior thanks for info, but the pic did not come through on your post. did what you said and i got BIG-L pic, [thanks BIG-L]. tell you guys what happen in the furture.

jt

mine went a year before I found the problem through the forum It gets worse like stalling out on high way and not wanting to start for over a month. good luck.

[jtiderencel]

as i type the boy is driving around town with a new cps { 30 bucks, he'll pay me back friday. had a little problem with backing off the big bolt and getting the pulley off. but after a few beers progress was made. thanks again GTPWarrior and BIG-L, your advice was well taken.

take to you the next time he has a problem.
jt