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Old 09-27-2005, 06:55 PM   #1
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Crank position sensor.

I checked the codes and it said that my crank position sensor is bad. My car is missing on top end so i ordered a opti spark a few days ago are these to related? How much is a new sensor? thanks!
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Old 09-27-2005, 07:10 PM   #2
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Re: Crank position sensor.

No they are not. Your cam position sensor is in your opti. Crank postion sensor is located at the very bottom of the timing cover. It's external and very easy to change out. Not sure how much they run.
When you change it out, examine the sensor itself for any mechanical damage.
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Old 09-27-2005, 09:37 PM   #3
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Re: Crank position sensor.

um, mabye not, I think they added that separate crank sensor in mid 96 or early 97, before that they used the opti as a crank sensor.
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Old 09-27-2005, 09:51 PM   #4
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Re: Crank position sensor.

'95 Vette had them and '96 Z.
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Old 09-27-2005, 10:43 PM   #5
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Re: Crank position sensor.

Quote:
Originally Posted by Eff
um, mabye not, I think they added that separate crank sensor in mid 96 or early 97, before that they used the opti as a crank sensor.
All LT1s use the opti for crank position determination for spark delivery. The only reason the crank sensor was added in 1996 was for misfire detection that was required by OBD-II.
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Old 09-27-2005, 11:03 PM   #6
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Re: Crank position sensor.

I have a CPS from my car that you can have for the cost of shipping. I just removed it because I run OBD-I, and a doube roller Timing chain.

60K miles, works fine.
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Old 09-27-2005, 11:35 PM   #7
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Re: Crank position sensor.

do i have a missfire then?? Or do i have a bad opti? or do i just need to replace the crank position sensor?
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Old 09-27-2005, 11:38 PM   #8
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Re: Crank position sensor.

If your CPS threw a code, it does not neccesarly mean the CPS ITSELF is bad, but that it detected a misfire. I would go ahead with that opti, check your plugs and wires.....
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Old 09-28-2005, 06:00 AM   #9
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Re: Crank position sensor.

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Originally Posted by Nick-LT1
do i have a missfire then?? Or do i have a bad opti? or do i just need to replace the crank position sensor?
If you have a constant misfire or dead cylinder your SES light will flash.
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Old 09-28-2005, 07:01 AM   #10
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Re: Crank position sensor.

Are you getting the SES light?
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Old 09-28-2005, 08:10 AM   #11
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Re: Crank position sensor.

no SES light just a check engine.
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Old 09-28-2005, 11:23 AM   #12
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Re: Crank position sensor.

You're getting a check engine light?
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Old 09-28-2005, 12:01 PM   #13
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Re: Crank position sensor.

Don't just throw parts at your car. Get the code number you are throwing and go to www.shbox.com and look at the description. Then on that same site pull up the wiring diagram and test the circuit and CKP sensor.
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Old 09-28-2005, 03:15 PM   #14
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Re: Crank position sensor.

Quote:
Originally Posted by Nick-LT1
no SES light just a check engine.
Check engine= SES= Service Engine Soon
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Old 09-28-2005, 03:19 PM   #15
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Re: Crank position sensor.

Well my ses light is not flashing but it is always on. I checked it today and i have four codes. 2 are for the air pump not being hooked up (headers) and the other two are P0335 Crank Position Sensor A circuit Malfunction and the other P0336 Crank Position Sensor a circuit Range/performance. What does that mean? bad crank sensor? It still misses above 5k. I have a new opti on the way will that fix it?? thanks!!
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