Thread: Stalling Issue's when starting!! Help!!!

Well, just when i thought i had my engine under control..more problems arise. I have a 01 Grand Prix GT-3.8 (non-supercharged) and i was having problems with the MAF sensor...replaced it...codes & SES light went away. Now lately, when i go to start my car in the morning(usually kinda cold)..it starts..idles a lil high and dies out...repeatedly for a couple starts..and then on the last start it idles normal and its fine. But ive been noticing a a lil hesitation too sometimes coming off a stop sign or when accelerating quickly it will chugg a lil...and sometimes while driving and i speed up to pass somebody...the rpms will stick around 3k and then chugg into speed...smh..this is crazy tho..no service engine light or nothing. Also replaced the TPS sensor awhile back too..does anybody have any info on these type of issues????

And this issue dosent happen everytime i start it up in the mornings...jus every now & then..could it be a bad fuel filter/fuel pump..bad MAP sensor..or a bad CPS sensor..cause im lost! Bad wiring maybe...smh

Mine did this Chek out the fuel pump resistor. Next time it does this try this trick. Its bypassing it on the relay. Worked for me. If it cures it then you know what it is. 50 dollar part on GMpartsdirect.com and looks insanley easy to change I havent changed mine yet I just did the bypass. Heres a link to check out just bend the tab on the shown relay.

L67-equipped cars: My car starts and then stalls. Repair inside..

Good looking..i'll keep this trick in mind...i also read it could be my MAP sensor...that will cause the car to stall after start up & said it acts as if its the fuel pump.

The MAP sensor could for sure I just gave this a shot because all you gotta do is bend a tab and it rules one thing out. needle nose pliers helped me a ton but I also have the hands of a 10 yearold girl.

Originally Posted by dmcglynn

Any update on this? I was having the chugging and hesitation symptoms for a little while and today it stalled on me once while driving. After a few tries it did start again. Then I continued on my way to a few more stores. As I was leaving my last store it gave me the issues of starting up, but it did start.

clean the throttle body if its a 04+, otherwise the CPS can cause the stalling while driving issue

Have you tried to bypass the resistor yet???? Its a free shot in the dark

Im just sayin its worth a shot because all it is, is bending on little metal tab in the fuse box on a relay. If it doesnt help. Bend it back.

A good mechanic would diagnose it by looking at the last couple of weeks/things done to it.

You said you replaced the maf. What brand maf? We commonly see cheaper replacement maf's like AutoJunk's go back quickly after being replaced.