PING DOC, Marsh, Steve, Other Renowned Care Know-allot-peoples

oh, boy

the crank position sensor is BEHIND the coil pack mounting plate, on the back of the engine

best accessed from underneath

just don't do like I did, 'change' it and find the NEW ONE laying on the bench when done............

You mean like chang out your tranny on a dirt drive way and find the right TC in a puddle of mud?

:-)

How did you know it was shot? I don't want to spend 24.99 - 89.95 (depends on engine) for a new sensor, replace it, and find out later it was a faulty wire. Also a guy there (customer so I took it with a

What, did it take the place of the camshaft sensor or something? I'd just think it would be for engine RPM......IE if it dies the tach dies.....

G-Monkey

Inline.........

Look at the wires. If the wires are fine, the sensor being shot is the only other thing that would trip the CPS code.

The tach runs off the ignition coil.................

Doc

So does that mean you don't know what a "CPS" does, or does it mean the free world will end if one of the hundreds of people in this forum tell me?

~KJ~

Hi!

Know-a-lot person that I ain't...your sensor senses the position of the crankshaft. :-)

I *think* it works by sensing the electrical/magnetic difference that magnets going by it make. What exactly it tells the ECM or anything else I don't know.

I doubt you'll be walking home if it dies. IIRC my dad's 88 Buick (3800 V6) didn't seem to miss it apart from the SES light coming on... But I wouldn't swear to that...it has been a long time since that car moved. The fuel pump is out and I haven't had the time to get it fixed or run some new lines...

William

I assumed it worked like that. Just like a magneto on a 2-stroke

Like my best guess, it was something for the RPM. I loved doc ellipse saying basically I was a retard, and then leaving the meaning of this part completely blank..... If it dies she has AAA and then it can be put in. $80.00 for an electromagnet that tells the computer (ugh) that the engine is spinning is ridiculous.

~KJ~

If you weren't such a disrespectful little turd I might have taken the extra few minutes to answer your goddamn question. If you had half a brain you'd do a google search for "crankshaft position sensor" and learn something for yourself. Heaven forbid you have to lift a finger to learn something for yourself.

It has nothing to do with telling the computer what the RPM's of the motor are ; it has everything to do with telling the computer WHERE the crankshaft is within a single rotation. I bet you really wanna know why don't you?

Your pal,

Doc

Hi!

Well, Doc, I'd like to know if you would be kind enough to explain it. Or tell me where some good information on it exists.

William The Guesser

Only get what I give, you've never seemed to like me. Guess your just too smart to help me out.

~Turd~

Hi!

Here is a dandy little link that Google brought up as the first return on 'crankshaft position sensor':

William The Guesser

knowing where the crankshaft is during its revolution is helpful in that the ECM can know where the pistons are. with a CPS, the ECM has enough resolution to tell *which* cylinder is misfiring or knocking, not just that *a* cylinder is misfiring. another reason for a CPS is that it allows distributorless ignitions.

HTH, Bret