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mifiring after a drive

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jj2gdsm

10+ Year Contributor
166
0
Aug 26, 2010
riverside, California
I need help my car misfires but only after a drive it and i shut it off come back and misfires. What could cause this i changed the spark plugs gaped then to .28 the wires are about 3 months old, coolant temp sensor is a few months old.:confused:
 
Boost leak test, vac test.

Test your injectors: turn your car on let it idle and take the injector cap off 1 by 1 and see if you notice a change. If not that injector is most likly bad.

As far at the ECU goes take it out, open it up and search for any signs of corrosion or broken caps.
 
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