Stalling problem

[ssixs]

MY 1999 sebring will stall for no know reason while driving. It takes anywhere from 5 to 30 minuets before she will start back up again. This occurs about every 2 or 3 days. When stalled it cranks OK just wont start, like its out of gas. I have gas up to the fuel rail (checked by disconnecting the fuel line in the engine compt). No codes on computer check. Fuel pump replaced six months ago. Dont believe its a overheating related problem because it happens when the engine is hot or cold. Help me please, I hate being stuck in an intersection wondering if she will start in 5 or 30 minuets. Try explaning that to the police!

[bearcatdon]

Check your crank sensor. It may be going faulty once it gets warm.

[ssixs]

Would a failing crank sensor show up as a code on the computer test. Test was done with no codes.
Thanks

[bearcatdon]

A bad crank sensor should show up as a code but I'm not sure about an intermittent one as you describe. I only say this because I had the same issue with an Intrepid that I owned. I even swapped out the ecm in hopes to fixing the problem and it didn't. Myself and garages could never get a proper diagnosis being that it was so intermittent and would start up once it cooled. Frustrated, I eventually got rid of the car being that it was unreliable. Later I thought of the crank sensor. It would have been my next step being that if the ECM does not see a signal from it the engine gets killed for obvious reasons. This is all theory on my part but the only one that makes sense to me. Something is killing the engine once it warms up and since in my case it wasn't the ECM my money is on the crank sensor or some horrible electrical problem that I wouldn't wish on anyone. If you get it fixed please reply on what it was. This was the first time I gave up on a car issue but I was tired of hearing my wife telling me to get this now non plated car out of the driveway. LOL

[bearcatdon]

Depending on how much money your willing to spend on the car, I think the dealer can attach a scan tool that will record the readings as you drive. Once the car dies they can see what the ECM seen prior to shut down and may be able to pinpoint the problem. You may want to talk with them.

[wgotzman]

I have been working on this problem for about 2 years now. 96 sebring 2.5 V6. I have the shop manuals and traced the problem to:

Power problems to the Automatic shut down relay and or fuel pump relay ground.

Let me explain, every time it does not start, the fuel pump does not start. Turn key on but do not start, it should run 2-3 sec.

When problem shows up the fuel pump relay will not close. ( this is a sign symtom) It is controlled by ECU, it provides ground path, but ECU connector is in between this. I believe it is the conncector and not ECU. I have proved parts of this by grounding the relay and the fuel pump does start. ECU's are rare to fail I have heard.

My problem is quite intermittent also I thought I had fixed it last year. It seemed to be the connections at the ECU: worked for 8-9 months great, after I bent the pins alittle.

Also there are other connections, that prove power from ASD relay back to ECU all of these are in these connectors. 80 pins connectors. (2)

I believe they are the problem, tried different things to improve connections but they are not easy to work on.

Pin 74 fuel pump
Pin 67 ASD relay
Pin 20 ASD feed
Pins 6

These are the critical ones ,

The connectors are poor in my opinion.

[ssixs]

It was the crank sensor. Only $65 to replace. yee-ha