rough idle
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i have an 04 enthusiast with about 16k
i just started to experience a rough idle at about 700 rpm and the car used to be around 750 rpm solid before. any ideas what could cause this?
thanks in advance
rw
i just started to experience a rough idle at about 700 rpm and the car used to be around 750 rpm solid before. any ideas what could cause this?
thanks in advance
rw
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here is the link for cleaning the maf https://my350z.com/forum/engine-drivetrain-and-forced-induction-diy/55677-how-to-cleaning-the-maf.html
going to try both suggestions this weekend...will post results
going to try both suggestions this weekend...will post results
Last edited by Road Warrior; 11-08-2007 at 01:16 PM.
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there are 4 main possibilities. even with Consult its hard to narrow it down.
1.maf
2.throttle body
3. injectors
4.coils
mine is screwing up on 3 cylinders at 60k from clogged up injectors. best thing for you to do is take it to nissan so they can do a power balance test to see which cylinders are not putting out and look at ecm input values. cheap gas will mess your injectors up and using injector cleaner with your fuel is never a bad idea.
1.maf
2.throttle body
3. injectors
4.coils
mine is screwing up on 3 cylinders at 60k from clogged up injectors. best thing for you to do is take it to nissan so they can do a power balance test to see which cylinders are not putting out and look at ecm input values. cheap gas will mess your injectors up and using injector cleaner with your fuel is never a bad idea.
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get some carb cleaner and carefully spray it around plenum gasket with it idleing.its best way to check for leaks but careful not to spray down low it may catch fire from the exhaust...not likely but possible. or better yet hook up a vacuum gauge.
keep in mind whenever you clean or replace a maf you need to clear out and do idle air volume relearn and reset alphas otherwise computer will run off old values. can only be done with Consult. this is just an FYI i don't think its will help you in this particular case. i am about to make a bet that cleaning TB wont help. its never that easy lol. should have gotten a honda if you wanted a car that never breaks
what you mentioned above is exactly same thing i did. only i had access to brand new parts which i just tried then returned back to parts dpt
i am pouring injector cleaner in lke crazy hoping it will take care of it...i THINK it got better but its probably all in my head. if it doesnt get any better i will try an injector cleaning ...
keep in mind whenever you clean or replace a maf you need to clear out and do idle air volume relearn and reset alphas otherwise computer will run off old values. can only be done with Consult. this is just an FYI i don't think its will help you in this particular case. i am about to make a bet that cleaning TB wont help. its never that easy lol. should have gotten a honda if you wanted a car that never breaks
what you mentioned above is exactly same thing i did. only i had access to brand new parts which i just tried then returned back to parts dpt
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Last edited by Al_s14; 11-11-2007 at 01:22 PM.
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ok...cleaned maf and made sure all plenum bolts were torque'd to spec and still experiencing rough idle.
i cleaned my tb not too long ago when installing my mrev2.
going to check for leaks next
i cleaned my tb not too long ago when installing my mrev2.
going to check for leaks next
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