Backfires too, dies when running anywhere from 20-50 mph without notice. Sometimes still running, but no power when I step on gas (no rpms). Fuel pump also has been replaced.
Mass air flow sensor could be bad , coolant temp. sensor , O2 sensors. Need to have it hooked up to a diagnostic scan tool that can reads engine computer data ! , how many miles on it ? do you have a check engine light lit on the dash ? Back firing would make me take a good look mass air flow sensor data . GM MAF Sensor Testing Part 1 doesn't always set codes ! MAF Test part 1
Your car cold start valve puts more gas into the system keeping your engine running higher RPM. When you car warms up, the cold start valve will stop working and your car RPM will drop. What you could have is a vacuum hose disconnected which puts more air into your engine - therefore when you press on the gas pedal, your engine would shut off or you find lack of power and then shut off.
Change the oil,did someone put cornstarch in your oil??,that will make it shut down when warm
Testimonial: "Oil has been changed recently. This started prior to oil change."
replace timing belt
×
289 views
Usually answered in minutes!
What year make an model vehicle do you have ? They haven't used cold start injectors for years , The engine computer turns on the fuel injectors for a little time ,till it sees it's warming up
1997 Jeep Grand Cherokee TSi
Hold the gas pedel down a little an see if it starts then !
I have, still won't start. Can smell fuel as if it's flooded. Once while under power and trying to stall I could smell sulpher. Could catalytic converter be the cause?
It basically starts when it's just good and ready to.
Oh a car with a mind it's own lol !!! No i won't think cat would just when hot , a plugged cat would be the same cold !
What did the dealer say ?
maybe timing is off ! worn timing chain , dist.
Because it's not throwing codes the dealer thought is was the CPS as well. I know now after replacing it today that it's not the problem. I'm gonna pull the air mass flow sensor tonight and clean it and see if it makes a difference.
×