My 93 bonneville se is starting up only to stall 10 minutes into running! She'll start up once or twice after that but usually has to sit for an hour or two before starting only to stall quicker tis time like 3 to 4 min later. Heres the infamous list of repaced parts all parts were brand new! Alternator, water pump, vaccuum hoses, fuel filter, power steering pump, fuel pump relay! Fuses were checked, today I am cleaning the throttle body and replacing the tps, the iac, and coil packs. I went and got the code key from auto zone. Heres another problem tried retrieving the ode but my check engine light does not come on and I believe I can't retrieve the codes from the computer if the engine light doesn't come on? I've read almost all the postings in this forum and I have used alot of the advice given. But I'm at my wits end. The car starts up purrs like a baby while it is running, but stalls and has a hard time starting up again. It died on the highway and had to be towed home because it wouldn't start up again until the next day! All of the repairs done on this car have been done within the last week! OH YES...The maf was checked it is ok, Please help any help at all will be appreciated! thank you

About the codes....i haven't used the code key, just a wire, but are you inserting it in the right part of the plug? There are two contacts in the ALDL connector that are different in color, and those are the two you want to cross. When you cross them, the cooling fans should both come on. The ignition must also be on. Does the SES light work when you turn the ignition on?

I suspect the ignition control module might be your problem. Where do you live? If you live in eastern indiana/western ohio i can give you a good ICM to help diagonse yours.

Welcome to the club, and sorry about your frustration!

This sounds similar to a problem I was having with my 89 Buick 3800. Not sure how similar the engines are or not. At first it was diagnosed as a bad Crank sensor at some po-dunk garage. Well i guess there is an adjustment when installing the sensor and they didn't adjust it properly so it shorted out and fried my MAP sensor and prom chip. I replaced both of those and the car would still stall unepectedly and VERY intermmittently. I finally broke down and took it to a dealer, and they diagnosed it as a bad catalytic converter. They replaced it and the car ran great for about 3000miles before I sold it. Can't say for sure if this is your prob, just what happened to me. Hope it helps

Verify that your check engine light self-tests when you first turn your ignition on. If it does, check to see if your ALDL connector (code thingy) was installed backwards. As in 180° opposed, and that you shouldn't perhaps be shorting the two pins you thought. It can be inserted into the hushpanel in either orientation.

The lack of a light means nothing as far as pulling codes. You may (and probably do) have tons of codes stored. Get a scantool on that car. One of our members may live near you with one.

Someone mentioned that it could be the fuel pump/screen? I was told on the 93'* that they made the screen to short and it sometimes falls off? Who knows I thought i'd run it by all of you. Thanks for the advice. Haven't figured out the code thing yet (but i'm trying) Get back to me on the fuel pump/screen issue if you can! I'll keep you posted on the developments as I go. Thanks everyone for all of your help!

92'* had that problem, not 93'*. Don't worry about hardware until you get codes retrieved. That'* the first priority.

I had a similar problem with intermittent stalling on my 93. First my crank sensor was bad (so i thought) turned out to be shorted ckp sensor wiring make sure you trace the wiring and inspect it for corrosion insulation damage, etc. After a few months I had another stalling episode, which turned out to be a bad icm. Keep in mind the ckp sensor and icm work together. Very difficult to diagnose intermittent stalling problems, these problems need to be narrowed down to fuel or ignition.