1999 Chevy Cavalier Crankshaft sensor, CODE P0335

Tiny
VERYKERRY
  • 1999 CHEVROLET CAVALIER

Computer problem
1999 Chevy Cavalier 4 cyl Front Wheel Drive Automatic 120000 miles

Hi there,

I'm writing about my '99 Chevy Cavalier.

I starting having problems starting it a couple of months ago. It would crank, crank, crank and sometimes start and other times not. When it wouldn't, it would seem to 'reset' itself when I turned the key to the totally off position and wait a second or two. Then it would start right up.
I also got the occasional backfire.

Next the check engine light came on and the speedometer went nuts so I brought it to the shop.
Code P0335 came up and they replaced the crankshaft sensor. That didn't fix the problem and I had to bring it back. They replaced the battery which was testing bad which fixed the speedometer and initially seemed to solve the trouble I'd been having starting the car. The next day, however, the problems returned including the backfiring (speedometer remains fixed). The check engine light is also on and still gives the p0335 code.

I brought it back to my mechanic a third time and he spent a day and a half trying to figure out the problem, to no avail. He said he even swapped the ignition with one from another chevy cavalier to eliminate that as the problem. Ultimately, he was stumped and referred me to the dealer.

The dealer has been trying to diagnose the problem now for 2 days and $400, but they have no answer yet and I'm still waiting. The only thing they know for sure is that I have a P0335 code and that there is a possibility that the crankshaft sensor is broken again even though it was replaced 2 weeks ago. They re-flashed the computer and that also didn't solve the problem.

Does anyone know what the problem might be?

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Tuesday, November 24th, 2009 AT 1:41 PM

15 Replies

Tiny
JACOBANDNICKOLAS
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If the same code keeps coming up, the problem lies there. The new sensor may not be good. THey can test it to make sure. If it is good, then the problem has to lie in the wiring to the sensor. I would be checking for damaged, freyed, wiring. Also, I would be checking for continunity in the wiring to make sure there isn't too much resistance causing the problem.

If you can, let me know what they have spent 2 days on.

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Tuesday, November 24th, 2009 AT 9:54 PM
Tiny
VERYKERRY
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They say they checked the harness, the ignition, the crank shaft sensor and the PCM. I am going to ask for a more detailed list.

They still aren't sure of the problem. They say they're getting an error code from the PCM, but they can't tell me what error.
Also, they removed the crankshaft sensor when they were poking around in there and weren't able to get it back on because they say it was bent. They charged me for a new crankshaft sensor, but not the labor.

Their $408 dollar diagnosis is just a 'maybe'.
They want to replace the computer ($676) to see if that fixes it. If it doesn't, they want another $318 to remove the oil pan so they can get a better look at the wheel to see if it's the problem. I don't have how much it will be to fix the wheel if they find that it needs replacement.

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Tuesday, November 24th, 2009 AT 10:50 PM
Tiny
JACOBANDNICKOLAS
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What wheel are they talking about?

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Tuesday, November 24th, 2009 AT 11:26 PM
Tiny
VERYKERRY
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Oh sorry. The flywheel

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Wednesday, November 25th, 2009 AT 9:25 AM
Tiny
JACOBANDNICKOLAS
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THere should be an inspection plate to remove and see the flywheel. Regardless, the flywheel isn't causing this problem. If they say it to you again, ask them how a flywheel can cause the car to backfire and run poorly. Let me know what they say.

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Wednesday, November 25th, 2009 AT 11:42 AM
Tiny
VERYKERRY
  • MEMBER

I'm still waiting for them to return my call.
WHen they first mentioned the flywheel, they said they thought it was a possibility that the flywheel & crankshaft sensor were not aligned. Also, when they weren't able to get the old crankshaft sensor back on, they thought it could be because of the flywheel.

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Wednesday, November 25th, 2009 AT 12:04 PM
Tiny
VERYKERRY
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. One more thing. They mentioned the reluctor in conjunction w/the flywheel. I don't know much about cars, but got the impression they were both part of the same thing and that the crankshaft sensor is somehow attached?

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Wednesday, November 25th, 2009 AT 12:09 PM
Tiny
VERYKERRY
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Okay, I finally heard back from them.
Here are the problems they list:

1. Starter is slow, needs to be replaced
2. Flywheel is damaged due to slow starter
3. "Internal open at PCM"--need new PCM
4. Possible problem with reluctor, but they need to remove the oilpan and they want $318 just to check.

I think I misunderstood about the flywheel vs. Reluctor.
I guess the starter/flywheel is another issue altogether.

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Wednesday, November 25th, 2009 AT 2:40 PM
Tiny
JACOBANDNICKOLAS
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That makes more sense; however, a slow starter doesn't damage a flywheel. As far as the reluctor, it is on the crank and that is what the crank sensor recognizes. Now I understand why they need to remove the pan. If there is an internal open in the PCM, it isn't repairable. I would suggest if there is an open in the PCM, start with that. Chances are the other work (oil pan / reluctor) won't need touched. If the starter is bad, that will still need replaced, but I really question how a slow starter damaged the flywheel. In all my years (30) I have never see a slow starter damage a flywheel.

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Wednesday, November 25th, 2009 AT 9:58 PM
Tiny
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Thanks so much Jacobandnickolas :)

It is peace of mind for me to have your advice!
I'm going to tell them to proceed w/the PCM and see what happens :D

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Wednesday, November 25th, 2009 AT 11:14 PM
Tiny
JACOBANDNICKOLAS
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Good luck and let me know how things work out, and thanks for using 2carpros. Com!

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Thursday, November 26th, 2009 AT 11:59 PM
Tiny
VERYKERRY
  • MEMBER

Hi Jacob & Nicholas,

I thought I'd update you on this. Believe it or not, I'm just today getting my car back--they've had it almost 3 weeks! They ordered one PCM and told me it made the car worse than before, so they ordered another one and had trouble programming it. They finally got it programmed and said that it fixed the intermittent starting problems and the backfiring. I was SO excited. They did re-emphasize that the car was slow to start because of my starter.

I go to the dealership, plunk down my $1,133, get in my car and not only will it not start up, it backfires and the check engine light is still on! It's like I never brought it to the shop!

They are telling me they can't help me further unless I allow them to replace the starter. *Cry*

I'll let you know what happens next!

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Thursday, December 10th, 2009 AT 6:38 PM
Tiny
OOPYDOOPYDO
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This is a problem all over but there are no answers yet. Has anyone changed the starter yet? I am thinking about going there first everything else has checked good.

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Saturday, March 6th, 2010 AT 2:20 PM
Tiny
MEHRANN
  • MEMBER

Hey,

I have same problem in my car. I have P0335 and P0342.
Car: 1999 Chevy 4 cyl Front Wheel Drive Automatic 85000 miles.

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Tuesday, June 12th, 2012 AT 3:39 AM
Tiny
RIVERMIKERAT
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Mehrann: Have you had the crank position sensor changed yet? Checked it for proper gap? Made sure the siring harness and wires are all in good shape? Good battery and alternator voltage?

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Sunday, July 29th, 2012 AT 11:40 PM

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