Tyler Warren

As you can see im new here. I need some help diagnosing a problem. My car will hesitate/stutter when accelerating up hill or getting on the gas. It only does this when its warmed up though. Been told it may be a coil pack going bad. Any advice would be great.

Thanks

TXMach

I'd start with checking your OBD port for any codes. SES light doesn't have to be on.

Tyler Warren

Would it be best to take it to a shop?

96t-bird

If you have some mechanical experience you can DIY. A shop will cost $ . you can go to one of the auto parts store to get them to read your codes for free.

TXMach

I know that most auto zones do it for free, but you can also buy a cheapo scanner for about $20 at that auto store while you're at it. Odds are, you'll need it again at some point.

Z28KLR

Before you jump to any conclusions and start replacing the coils (also assuming no codes present), check the condition of your spark plugs. If it's been a while or never then just replace them. While you have it all apart, inspect the coil boots for any damage, deterioration or signs of arcing (will likely appear as a brown-ish dusty substance); replace boots as necessary. If you end up doing the plugs, torque spec is 11-14 lb/ft, be careful not to exceed that.

TXMach

^^^^All of this. That said, there are a few possible causes of a misfire. Fuel injectors specific to the cylinder in which the misfire is occurring are also something to look into. If you run a scan and catch a code, it will likely be two codes. One that tells you there was a misfire upon startup, and another to tell you which cylinder/s the misfire occurred in.

devongarver

Click the link in my signature and read up about troubleshooting these things. Judging by your description of heat being an issue I would lean towards a COP as the culprit.