[BK1096]

Okay so, update with my Malibu. 2 weeks ago with the bad winter storm, I had a minor accident with a snow drift bank. I'm thinking somehow the impact knocked something back into place because ever since the impact (which shattered the lower portion of my bumper and bent my radiator slightly, yes its okay to drive, body shop approved until they have an opening for me) the car no longer idles rough or drops RPM when stopped, go figure. Only thing I could think of that might be the answer is the fog lights. I noticed a few weeks before I crashed that when I turn on the fog lights, the radio signal gets more static interference. In the accident my fog light bulb snapped in half and the plug of the bulb was left inside the connector. I'm wondering if the ground it runs on isn't connected the greatest and the reduction of load helped balance it out more? Or if I maybe knocked a previously loose ground into a more tight position? I'm really just grabbing and straws and completely baffled how it's fixed after. Not saying crash it to fix it, but it worked here 😂

Mine doesn’t have the fog lights unfortunately

 

[BK1096]

Did you put in LED bulbs in the fog lights? Some of them will create electronic interference in the system.
GM service manual state step one in weird problems is to remove all aftermarket accessories.

I didn’t even think of that, I replaced my low beams with LEDs, I’ll unplug and try that

 

[Smtcoil]

I do have LEDs in my fog lights, interesting point that I wasn't aware of. I also have LED low beams but I've had those for years and I dont think they're the issue (I had halogens in for a month a few months ago when one burnt out and the issue was still present) I'm thinking maybe getting my battery tested again even though it's only 2 years old, wouldn't hurt. I did have to boost it after not starting the car for 4 days during the single digit temps, but not since then.

 

[repairman54]

If you had to jump start it in single temps the battery is undercharged or weak. Healthy battery should handle below zero temps for a few days parked.

 

[DrivenDaily]

I agree. My 2011 has a battery that I bought in April 2019. Two weeks ago the temps got to below zero for several nights, with daytime temps making it into only single digits or the low teens.

Car started up without an issue.

 

[Smtcoil]

I agree. My 2011 has a battery that I bought in April 2019. Two weeks ago the temps got to below zero for several nights, with daytime temps making it into only single digits or the low teens.

Car started up without an issue.

I got the battery in late 2020, but if it's on its way out, it's on its way out

 

[Smtcoil]

Well, interesting development for me. Car runs smooth, but fuel trims are still off (+22% ish, sometimes up to 25) Out of curiosity, I reset the fuel trims as well as the throttle idle compensation. Started the car, it ran awful for a second then figured itself out, right back to "normal" fuel trims. Throttle compensation is at a much lower number now (think I forgot to reset it when I cleaned it, not sure) but it finally set a code, p2365 fuel pump performance. Tank pump was running at 33 psi for 0% long term trim. New fuel pump it is for me 🙄😂

 

[DrivenDaily]

I hope that fixes it for ya!

 

[BK1096]

Final update from me on this thread. Didn’t want to leave it hanging like all the others I’ve seen. I took it to a shop and they replaced the throttle body and it still was having issues. I said screw it and didn’t want to spend more money on a car chasing problems so I got rid of it today. Best of luck to everyone else

 

[campb292]

Final update from me on this thread. Didn’t want to leave it hanging like all the others I’ve seen. I took it to a shop and they replaced the throttle body and it still was having issues. I said screw it and didn’t want to spend more money on a car chasing problems so I got rid of it today. Best of luck to everyone else

Thank you for returning with the update and final verdict. Good luck!