My '93 Bonneville Won't start at times
 

I have a '93 Bonneville SSE, Tuned Port Injection, and after it's been driven awhile it'll stall and won't start. Or, if I go somewhere and turn the car off, when I get back it won't start. I'll have to wait a few hours and it'll start like nothing is wrong. I took it to 2 shops and they can't find anything wrong with it. It'll start and run just fine. Any help would be great. Thanks, Dan

have the ICM (ignition Control Module) which is located underneith the coil packs tested. Sounds like classic symptoms of its failure. They often cease to work when they get hot when they're bad.

If that wasn't a FI car I'd say it was vapor locking.

Checked your fuel pressure?

Have they checked the fuel pressure?

Does the car miss, stumble or stall? Or just quit with no notice? Is the SES or security light on?

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When this happens is there less than 1/3 gas left in the tank? The 93's seem to have a problem with the sender regulator when fuel levels drop below 1/3 tank.

That's 92's. I've not seen a 93 do this.

All this happens when the car gets hot. The last time it happened my wife turned a corner and the car stalled.

have you checked for any codes, there are a few things that we have learned, with the stalling issue. It could be a possible bad cam or crank sensor causing your issues

it doesnt account for the stalling issue, but i had a bad ground that was causing my stuff not to start all the time.... cleaned off the corrosion and it took care of it.


it woudn't hurt to clean up some of the connections

I have same prob
 

I went to lunch parked...... came back 5 min later and car wouldn't start.......


sometimes it'll turn over but not start

then more recently when I turned the key it did nothing....... said check gauages, check engine, security (I tried my spare key so I knew it wasn't my key being dirty and that did nothing)


then all of a sudden a few minutes later it started...... the whole couple minutes I was trying and nothing was happening

figured I'd add to this but if people feel it's much different I'll start a new thread....

thanks.

I say this a lot, because its from experience, but my crank sensor went bad on my 94 and had the same problems as you.

That's another option.

Crank sensor location
 

My guy Dan is giving up on my Bonneville. I guess I'll fix it myself. Where would the crank sensor be located. I found the ICM, but I'd rather replace both the ICM and Crank Sensor.
Thank you guys,
Jeannie

Have you pulled codes yet?

Check for gas at the vacuum source for the fuel pressure regulator, otherwise I'd guess it to be the crank sensor.

The engine has fuel going to it.
 

The engine has fuel going to it. All the pressure reading are good. The crank sensor is where? I don't mean to be a bother, but I need my car running. Thank you guys,
Jeannie

Re: The engine has fuel going to it.
 

Behind the crank pulley. Still, check for gas leaking into the vacuum source at the FP regulator.

Please check for codes before shotgunning or checking anything else. The codes may tell you EXACTLY what's wrong.

Please pull codes and tell us what you find. http://www.bonnevilleclub.com/techinfo/?article=34

Better still! IMO, you need a professional to check this out. I see this WAY too many times with the big rigs in my shops.

This is actually a very basic problem. I think the codes, if any will point us in the right direction. The lack of codes can too ;)

I know, I've owned about 6 3800 engined vehicles over the years. They can be fussy when these electrical issues occur! :oops: