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Car won't start/crank.
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Author:  Bonnie98ssei [ Mon May 23, 2011 11:11 am ]
Post subject:  Car won't start/crank.

So I needed to get my harmonic balancer replaced so I figured while I was at it I'd replace my crankshaft position sensor since the car has been stalling on me and I heard thats usually the culprit.

So after I got both installed, I left the mechanic and came home everything running smooth.

Just went back to start the car, power came on but it will not even crank. I also noticed that the SECURITY light stays solid when I attempt to start the car. I've had my VATS bypassed already so what could be the problem?

Would have something to do with the crankshaft sensor? please help.

Author:  RJolly87 [ Mon May 23, 2011 11:17 am ]
Post subject:  Re: Car won't start/crank.

If the security light stays on solid, and does not go out a few seconds after key on, you will want to double check your resister pack to make sure the resistance is still correct. It is possible that if, depending on how it is wired, one or more of the resisters may have failed, or come out of tolerance.

Would it have anything to do with what the mechanic did? It shouldn't, but I also don't know what all he did.

Author:  sandrock [ Mon May 23, 2011 11:20 am ]
Post subject:  Re: Car won't start/crank.

That VATS bypass only works when the module is functioning correctly. If it's staying lit, there's a good chance the module is toast.

First, lets try the simplest thing. Take the key and rub it with alcohol (or hand sanitizer, which would be better since you can put a dab on, run the key through the ignition a few times to clean the contacts at the tumbler), then try again. Also see if the car will start in neutral instead of park.

If that fails, I know how to bypass all of that module for GOOD, but you'll need a relay and some extra wiring.

Author:  sandrock [ Mon May 23, 2011 11:23 am ]
Post subject:  Re: Car won't start/crank.

For the record...

Any VATS bypass does NOT bypass the VATS module...it only closes the loop for the resister pellet reading. A true bypass will take the module completely out of the loop.

Author:  nicklikesmilk [ Mon May 23, 2011 11:42 am ]
Post subject:  Re: Car won't start/crank.

Do you by chance have another key you could try? It might help narrow down the problem to VATS

Author:  Bonnie98ssei [ Mon May 23, 2011 10:42 pm ]
Post subject:  Re: Car won't start/crank.

Thanks guys, dont know why but the car started up after 10 mins and hasnt done it all day since this morning. I will have to check my resistors this weekend.

Now I got to figure out this stalling problem. It usually happens at low rpm (around 1000) with my foot off the gas. Did it to me today on the highway. Since I just put a brand new crank sensor I've eliminated that possibilty. All my wires and plugs are new. Any ideas???

Author:  sandrock [ Mon May 23, 2011 10:47 pm ]
Post subject:  Re: Car won't start/crank.

Was a CASE learn done on the car after the sensor was replaced?

Author:  Bonnie98ssei [ Mon May 23, 2011 10:55 pm ]
Post subject:  Re: Car won't start/crank.

sandrock wrote:
Was a CASE learn done on the car after the sensor was replaced?



Not sure, what a case learn?

Author:  00Beast [ Mon May 23, 2011 11:22 pm ]
Post subject:  Re: Car won't start/crank.

That's a no then. The CASE Learn (Crank Angle Sensor Error) basically allows the crank sensor to determine where the crank is and set timing from there. Go to your dealer, tell them you changed the crank sensor and that you need a CASE Learn. It takes 30 seconds with a Tech II and they'll charge you $20 for it. Unless you know someone with a tuner or a newer Aeroforce ScanGuage, which can do CASE Learns.

Author:  Bonnie98ssei [ Tue May 24, 2011 12:23 am ]
Post subject:  Re: Car won't start/crank.

00Beast wrote:
That's a no then. The CASE Learn (Crank Angle Sensor Error) basically allows the crank sensor to determine where the crank is and set timing from there. Go to your dealer, tell them you changed the crank sensor and that you need a CASE Learn. It takes 30 seconds with a Tech II and they'll charge you $20 for it. Unless you know someone with a tuner or a newer Aeroforce ScanGuage, which can do CASE Learns.


Awesome thanks !!!!

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