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Post by redheadmetalhead on Aug 25, 2013 15:59:57 GMT -6
I recently replaced my crankshaft position sensor, after having my CEL diagnosed with that code. After replacing the sensor with a brand new one from Autozone, the symptoms of the bad sensor are still present -- delayed start, tach reading 4k at idle and 8k when driving, car randomly dying.
Does anybody have any idea why this is? Do I need to go to a GM dealer for a relearn?
Thank you in advance
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Post by Marc on Aug 25, 2013 16:07:41 GMT -6
The relearn has to be done with a Tech 2. A shop other than the dealer might charge less for this.
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Post by redheadmetalhead on Aug 25, 2013 16:17:30 GMT -6
Is the relearn 100% necessary to make the symptoms disappear?
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Post by Marc on Aug 25, 2013 18:34:37 GMT -6
There have been people here with 4.0s that got by without the relearn procedure.......the 4.0 has 2 CKPS. That might make a difference. But if your 3.5 is still running as if it had a bad CKPS, then I would say that the relearn is necessary.
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Post by redheadmetalhead on Aug 25, 2013 21:00:57 GMT -6
Darn. I was afraid you'd say that.
I ran a code scanner and it popped a P0335 even with the brand new crankshaft sensor. Still think that's from a lack of relearn?
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tigger
Administrator 
Posts: 2,844 
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Post by tigger on Aug 25, 2013 22:20:19 GMT -6
Check your wiring and connecter for damage/wear.
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Post by redheadmetalhead on Aug 25, 2013 23:03:51 GMT -6
Connector and wiring seemed fine. No crimped/melted/stripped wires coming off the connector.
Could a bad camshaft sensor be the problem? I just replaced the camshaft position sensor with one from a junkyard. The Crankshaft Position Sensor code is the only one that pops though.
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Post by robaurora01 on Aug 26, 2013 4:07:15 GMT -6
When it comes to those codes its always best to replace in pairs as one may be lieing to the other sending the wrong code to pop up now your junkyard one may be bad as well
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Paulaurora
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Post by Paulaurora on Aug 26, 2013 8:09:32 GMT -6
maybe its a bad starter
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Post by Marc on Aug 26, 2013 8:51:51 GMT -6
I don't think that the camshaft position sensor would have anything to do with this. The CKPS & the CPS are on different circuits.
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Post by robaurora01 on Aug 26, 2013 9:45:55 GMT -6
They are but they both run and do very similar things
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Post by redheadmetalhead on Aug 26, 2013 11:07:38 GMT -6
I know both codes = bad starter, but the starter works just fine.
I rescanned for codes, only got the crankshaft position sensor (P0335)
I can't think of anything. I need to figure it out, because I use the car on a daily basis.
--UPDATE--
Changed the camshaft position sensor. The car used to crank for 7 seconds or so, then kick over and start, then the tach would hit 4k at idle. The tach hits 8k immediately now. That's the only change I've noticed so far with the new sensor.
Am I pretty much bottlenecked down to going and getting a relearn? I don't want to spend the money on it and have it not work.
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Post by nelson480 on Aug 26, 2013 20:33:40 GMT -6
Check wiring near the exhuast crossover. Ihave found damaged wiring near there before
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Post by redheadmetalhead on Aug 27, 2013 0:23:04 GMT -6
I guess I'll go through and look at wiring. Seems strange that there might be a wiring issue when the car only has 63k miles on it.
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tigger
Administrator
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Post by tigger on Aug 27, 2013 1:35:06 GMT -6
I guess I'll go through and look at wiring. Seems strange that there might be a wiring issue when the car only has 63k miles on it. May have only 63,000 miles but it's 12 years old! Just trying to lend you the benefit of my (our) experience. Good luck. |
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Post by redheadmetalhead on Aug 27, 2013 3:21:02 GMT -6
I guess I'll go through and look at wiring. Seems strange that there might be a wiring issue when the car only has 63k miles on it. May have only 63,000 miles but it's 12 years old! Just trying to lend you the benefit of my (our) experience. Good luck. Haha, true. Didn't really think of it like that! Thanks for the help, guys. Hopefully I can get Aubrey running strong again. |
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Post by redheadmetalhead on Aug 27, 2013 13:26:30 GMT -6
Update:
Rescanned after fiddling around with different sensors. Same P0335 code, but on this scanner, it comes up with CRANKSHAFT POSITION SENSOR A - CIRCUIT
I'm assuming since I've put 3 new sensors in the car and it had the same problems, the sensor itself isn't the issue.
The "CIRCUIT" part of the scan makes me wonder if this is indeed a connection problem. Is this a fairly common thing, having the connector go bad?
Thanks, everyone.
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Paulaurora
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Post by Paulaurora on Aug 27, 2013 17:42:25 GMT -6
anything is possible.
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Post by oldwino on Aug 27, 2013 18:44:15 GMT -6
From 2002 FSM, but likely accurate. Hope it helps.  |
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Post by redheadmetalhead on Aug 28, 2013 7:21:33 GMT -6
oldwino, that picture is INCREDIBLY helpful. Thank you so much!
Off to Ricerzone to see if they have a 6-pin connector for the CKPS.
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Post by oldwino on Aug 28, 2013 16:31:59 GMT -6
you're welcome. If they don't have it, RockAuto will.
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Post by redheadmetalhead on Sept 6, 2013 18:46:04 GMT -6
Update!!
Checked all the wiring, spliced in a new connector, and still NO CHANGE. I'm tearing my hair out with this car.
I also just put a new new new crankshaft position sensor in. Helped with the stalling, but the car still has long, rough crank times. Tach still reads an idle of 4k, and shoots to 8k when I step on the gas. The CEL and P0335 code are still popping.
Does anybody have ANY idea what to do?? Please help. I love this car to death, but I can't keep dumping money into it if it's going to keep doing this.
Thanks in advance.
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Paulaurora
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Post by Paulaurora on Sept 6, 2013 21:41:59 GMT -6
go to the shop.
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