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-   -   Check engine light doesn't come on ? (http://mustangforums.com/forum/v6-1994-2004-mustangs/702038-check-engine-light-doesnt-come-on.html)

Maverick710 10-10-2013 04:02 PM

Check engine light doesn't come on ?
 
hey guys my mustangs service engine doesn't come on and i know it has to come on because my cars having misfire issues. When i turn the cluster on without starting the car the light is on so the bulb is good so does anybody know if there's a fuse or relay that controls it?

Derf00 10-10-2013 05:16 PM

Rather than rely on the light, hook up a handheld OBDII scanner that has a datalogger or live view. It will be obvious which cylinder is having the misfire then or what is causing it.

petrock 10-15-2013 08:08 AM

Quote:

Originally Posted by Derf00 (Post 8293342)
Rather than rely on the light, hook up a handheld OBDII scanner that has a datalogger or live view. It will be obvious which cylinder is having the misfire then or what is causing it.

+1. Not all misfires will cause the check engine light to com on.


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