1990 Chevrolet Lumina Repair Question
Why does my car stall and not restart after it has warmed up?
Asked by tinkergirlAnswer
You have to do testing when the problem occurs, Did you? When it stalls, visually check for spark at the spark plugs. If spark everywhere, then use a gage and check fuel pressure. What is the fuel pressure spec?
When it stalls, can you communicate with computer? There should be at least one code, even if it doesn't mean much. If something is causing a fault at the computer, you need to fix that first, or it may damage a new computer.
The cts could cause a temp related issue,but, without something to go on, we are just throwing parts at it.
my car is doing the exact same thing. I change to ignition contols module after i had it tested and it still stalls after warming up. What elses can i do. And what was the problem with tinkrgirl's car?
I don't know? The person hasn't posted back.
I checked codes for computer and it keeps repeating 12 code. Si i guess its telling me that theres nothing wrong with my computer making this a battery issue. Any thought?
I don't mind talking to you, but, if make your own original new post, more people will see it.
It ended up being 2 bad fuel injectors! If its your fuel injectors it will not throw a trouble code to the computer.
PLEASE HELP!
Okay so we changed out the fuel rail and injectors from a car at the junk yard. All injectors read between 12 and 12.3 ohms. Car started making a horrible knocking noise and acting like it was miss firing. It sounded like something was knocking around the intake. So we decided to take the intake off and make sure nothing had accidentally fallen in one of the hols for the injectors. We power washed both the intake and the plenum cleaning it inside and out. Made sure there was no debris under it. Put in new gaskets of course, new coolant temp sensor, thermostat, oxygen sensor, new plugs, wires were good quality and about 1 yr old, and new crank sensor. Still knocking and running horrible. Decided to put the old fuel rail back on and replace the 2 bad injectors. it is running better but still knocking. Any ideas?
The knocking isn't oil related? Do a cylinder compression test.
No the knocking wasn't oil related. Something had fallen into the firing chamber. While trying to diagnose where the knocking was coming from it suddenly stopped. Car was running pretty bad so we checked compression and the new spark plugs. Compression was fine, however the plugs in the #'s 1&2 firing chamber where beat up a little and the plug was damaged. Changed these out and voila the car is running fine! It has been more than 2 weeks now and I haven't had any problems with it.
Good job. Sounds like you got it going your way.