Question about Cars & Trucks
Thanks, we have checked the plug for fire. our book explains the codes but did not state everything to check. we borrowed a tool to check compression, and plan to move to the injectors from there, but did not know if there was anything thing else we should check, or if we were even on the right track. thank you
You have not given any relevant information as to make year model or problems. ON this I would have the fault codes read so that we can help by seeing what codes were found.. Remember the more information you give, the more accurate the help you will receive.
Posted on Dec 05, 2014
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Posted on Jan 02, 2017
Before changing you pcm try cleaning your egr valve. remove the valve and see if its stuck in the open position if so use a small pick to clean around the spring.
Posted on Mar 12, 2009
SOURCE: '97 A4 1.8T, coolant leak resulted in brief overheat,leak fixed,diag.code now shows #2 cyl.missing (badly), compression good,injectors good,coils/plugs good,missing badly,could the brief overheat have
did the car over heat for long?
there could possibly be damage to your head like warping due to overheating and blowing a head gasket or something along those lines .
first check the oil dipstick is it milky?
then check the coolant is it oily?
and when it is running is it blowing any white smoke?
if you replaced the plugs and it is misfiring did you plug the wire all the way back on the plugs if not then the problem is a plug wire being loose and loosing connection with the plug.
sounds like a simple fix if you don't have water in your oil or white smoke coming out the exhaust.
troubleshooting it can be a bigger job but if you nail the right symptoms down you can corner the problem.
like if it is a coil pack or bad wire switch them with another one and see if the problem follows the wire or coil pack.for instance take the number one plug wire off and the number two wire off and put the number one wire on number two and see if the number one misfires. if so then the wire is the problem if not then try numbers three and four until you find out which cylinder is the culprit.
good luck and happy hunting.
Posted on Jun 02, 2009
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