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Old 11-16-2008, 02:25 PM   #1
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Cool update to rough idle...code P0300

ok so i took it to Auto Zone and they gave me code P0300 random multiple misfire, The possible solutions they gave...Were plugs and wires, coils, vacuum leaks, injectors...I've only had the car for a year and a half..any i dea on where to start to fix my problem without spending a ton mof money... It was tuned up in february but I'm not sure how worthy the mechanic was due to me moving to a different state...I usually do the work myself...Please help...
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Old 11-16-2008, 06:06 PM   #2
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Didn't I answer this? To many conversations on to many different groups. Test for vac leaks with carb cleaner, spray on all lines and connections, don't forget the EGR tube. Any changes in RPM and you have a leak.

Check all your plug wires. Make sure they are not touching a ground. Also check back wires, 4 and 6 are good for this. Make sure they are not touching the O2 sensor wire. Make sure all wires are on tight.

Pull plugs and inspect, post pictures if you find anything odd.

Most of the time, random misfires are caused by these problems.
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