What could cause a random misfire that began right after I got a tune up? new fuel filter, air filter and spark plugs are all I think they did.

10

Asked by Jul 14, 2014 at 07:12 PM

Question type: Maintenance & Repair

The tune up was suggested by the garage because the car was
having starting problems. Immediately after the tune up it started
misfiring (didnt realize at the time just knew it was running poorly)
and check engine light started flashing. Fuel pump was replaced
which fixed starting issue but random misfire remains. Maf, tps, and
egr codes came up and I know they can cause misfire but I cant get
over tbe fact that the misfire didnt start til after the tune up.

1 Answer

241,205

Take it back to the mechanic, they forgot to connect something that is causing the misfire.

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