2003 6 spd idle issue.
#1
2003 6 spd idle issue.
2003 3.5 6 speed car. 191k, just replaced all spark plugs, replaced rear coil packs with new units, new rear valve cover and valve cover gasket, replaced the ignition condenser thingy, replaced front valve cover gasket. The issue is at idle I get a random misfire CEL but it will turn on and off randomly. I have sprayed brake cleaner all around the intake to make sure there were no intake leaks and none were found. What I find odd is, it seems like when I disconnect the front coil packs individually it makes almost no difference in how it idles, good or bad. Im at my wits end with this car but when it runs, it runs amazing.
#4
#7
Random misfire cel was the issue before and after the tune up. It would come and go randomly. Coil packs were new aftermarket units, plugs were gapped to .044. I have also done the coolant bypass on it as well. It will, at times, die if I am rolling up to a stop sign and throw it in neutral.
#9
Random misfire cel was the issue before and after the tune up. It would come and go randomly. Coil packs were new aftermarket units, plugs were gapped to .044. I have also done the coolant bypass on it as well. It will, at times, die if I am rolling up to a stop sign and throw it in neutral.
#10
Two things I would check. First check your throttle body for excessive oil/grime at the throttle plate. If it is, clean it up...the engine will starve for air when going from driving to throwing it in idle. Second is to check the PCV hose coming from the back of the valve cover into to the back of the intake. If the hose is deformed, cracked or soft it will cause the engine to run like crap and throw CEL.
#11
2003 3.5 6 speed car. 191k, just replaced all spark plugs, replaced rear coil packs with new units, new rear valve cover and valve cover gasket, replaced the ignition condenser thingy, replaced front valve cover gasket. The issue is at idle I get a random misfire CEL but it will turn on and off randomly. I have sprayed brake cleaner all around the intake to make sure there were no intake leaks and none were found. What I find odd is, it seems like when I disconnect the front coil packs individually it makes almost no difference in how it idles, good or bad. Im at my wits end with this car but when it runs, it runs amazing.
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Unclejunebug
5th Generation Maxima (2000-2003)
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04-02-2016 05:42 AM