turbo-fever Posted December 11, 2015 Share Posted December 11, 2015 I'm at my whits end trying to diagnose a top end misfire, I have replaced all the ignition side of things. I have noticed that if I turn my headlights on my revs drop and if I press the brake they drop a lot more, which leads me to believe my alternator may be on its way out but would that cause a misfire to ? Quote Link to post Share on other sites
Amjad Posted December 11, 2015 Share Posted December 11, 2015 Dunno about misfire but I had the rev drop problem until the car cut out completely! Alternator replaced and now all good Quote Link to post Share on other sites
jellybaby Posted December 24, 2015 Share Posted December 24, 2015 Do a check on the alternator see what voltage it putting in also check the ampage Quote Link to post Share on other sites
ChrisLeeBoost Posted December 24, 2015 Share Posted December 24, 2015 When you say press the brakes do you mean press once or pump them a few times? I've got a low rpm issue aswell while sitting in traffic car will sometimes idle at about 800-900 and sometimes even lower I'm not sure what it is Quote Link to post Share on other sites
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