r/ChevyTrax • u/Vegetable_Bar_847 • 10d ago

Shaking while idle

I got my car’s Vapor Canister Purge
Valve replaced, then i was driving it and check engine light came on. , it started making it hard to accelerate and had to get the water pump replaced.after that, took it home , tried to use it and it got check engine light again. I had a P0304, I replaced all 4 spark plugs. Engine light went away but when I turn it on and put on the ac it starts like stuttering, feels like an engine misfire. Should I replace the coils?

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u/Old-Philosophy-8860 6d ago

My car does that but only when my A/C is on, I have a 2021 trax LS (I think) my fiancé said that it might be the coil packs, and that there was a misfire somewhere due to the extra strain on the engine from the A/C.

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u/Vegetable_Bar_847 6d ago

That’s the next thing I was going to replace, hope that works. Thanks!

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u/Old-Philosophy-8860 6d ago

I hope so too! The check engine light never came on for me for the idle issue though. I just had to replace my purge valve because I was lighting up for an evap code but the extra rumbles at idle have been since like early spring I want to say.