HELP! low idle and misfire
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Teching In
Joined: Apr 2009
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HELP! low idle and misfire hey guys, my 02 t/a still has what seems to be a slight misfire at idle. it idles at 800 on park and about 600 on drive. I have tuned out the rear 02's, replaced the front 02's, installed msd wires and ngk plugs, cleaned throttle body and fuel system cleaner and theres still something slightly wrong. any help is appreciated 
Wear in an engine can and will cause missfires as well . as an engine ages , so do the parts and the parts age at different rates thus the reason only 1 or 2 cylinders miss when it's mech engine related . Do a compression test , or if You have access to an oscilliscope , check it out . Most likely You've got a cyl with a little bit low compression .
Try cleaning the MAF with some Maf cleaner then reset the IAT TPS and MAF by unplugging, them turning the car to on for 10-15 seconds, turn it off, plug sensors back in, and start the car. Could just be a prob with one of those. I know mine was having the same issue and it helped a lot. Good luck man.
