derekhay316
Registered User
I just got a tune up done where they changed the valve gaskets, oxygen sensors and spark plugs (not the wires) and now when I put on full throttle in usually 3rd and 4th gear the car will chug or studder. Any idea what this would be? Maybe the timing? Also the check engine light was on before (that's why i got the tune up) and now thats gone, but it still has this problem.