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Idle Problems...help!

JVP

By JVP,
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JVP Grand Master

JVP

Posted
Posted

hey dudez

got a problem with my r32 gtst

yesterday at about lunch time, i had driven it for about an hour, just normal driving.

didnt drive it until about 9:30 pm. goto start up and it idles at about 1500rpm

goto drive it, it wont rev above 2500rpm, and when it hits 2500rpm, its like it hits the limiter, or like a fuel cut...but when i put my foot on the clutch it will rev, and the problem seemed to go away and i could drive home

played around with it for 20 mins and it seemed to be ok after i put my foot on the clutch and revved it.

drove home on the freeway and everything was fine until i put my foot down in 5th to overtake someone and it just coughed and spluttered and it was ok then i tried again and it just died in the arse and stopped, but it didnt stall.......

pulled over and revved it again, and everthing was ok, it would drive normally and wouldnt splutter or struggle

it did the problem again as i got off the freeway near my house.

now i have to drive my 31 again...it just isnt the same....

any help would be appreciated

cheers

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JVP Grand Master

JVP

Posted
  • Author
Posted
hey dudez

got a problem with my r32 gtst

yesterday at about lunch time, i had driven it for about an hour, just normal driving.

didnt drive it until about 9:30 pm. goto start up and it idles at about 1500rpm

goto drive it, it wont rev above 2500rpm, and when it hits 2500rpm, its like it hits the limiter, or like a fuel cut...but when i put my foot on the clutch it will rev, and the problem seemed to go away and i could drive home

played around with it for 20 mins and it seemed to be ok after i put my foot on the clutch and revved it.

drove home on the freeway and everything was fine until i put my foot down in 5th to overtake someone and it just coughed and spluttered and it was ok then i tried again and it just died in the arse and stopped, but it didnt stall.......

pulled over and revved it again, and everthing was ok, it would drive normally and wouldnt splutter or struggle

it did the problem again as i got off the freeway near my house.

now i have to drive my 31 again...it just isnt the same....

any help would be appreciated

cheers

no one can help me???? im desperate to get it working.....

jwah Collaborator

jwah

Posted
Posted

I had sorta problems like that with my GTR when i first got it. Ended up being a f**ked airflow metre. Sounds like yours is going in and out of being f**ked, like mine would, i think its age and heat. Unplug your airflow metre, and rev it, it should hit rev limiter at 2500 cause its in a safe mode. Might not be the problem, but it just sounds like it, also check your o2 sensor, it can cause problems too, just if your airflow metre is out, would be a good idea to check or replace your o2 sensor. Hope this can maybe help

Cheers

JVP Grand Master

JVP

Posted
  • Author
Posted

ok...pulled the afm out, found only one screw holding the plug in....put three more in.

plugged everything back together, still not revving over 2500rpm

pulled apart again....checked all the cooler pipes etc...couldnt see and split hoses, but couldnt see the pipes that actually go into the cooler..maybe they are split or loose there.....

also found that my rear muffler is totally f*kd....all the internals spat out....could this be the problem also???

i midas well change the exhaust but dont know what size or wateva....3" turbo back with hi-flow cat? how big of a muffler

cheers guys.....

  • 2 weeks later...
mabru Enthusiast

mabru

Posted
Posted
ok...pulled the afm out, found only one screw holding the plug in....put three more in.

plugged everything back together, still not revving over 2500rpm

pulled apart again....checked all the cooler pipes etc...couldnt see and split hoses, but couldnt see the pipes that actually go into the cooler..maybe they are split or loose there.....

also found that my rear muffler is totally f*kd....all the internals spat out....could this be the problem also???

i midas well change the exhaust but dont know what size or wateva....3" turbo back with hi-flow cat? how big of a muffler

cheers guys.....

No revs above 2500RPM = bad AFM.

RB30-POWER Mentor

RB30-POWER

Posted
Posted (edited)

Yeah, if the AFM is stuffed, it will not rev over 2500rpm (cuts fuel).

Plus it will be running limp home maps which are really rich, because it can't detect actual airflow due to the afm not working, so it will run like a bag of shit.

A quick check that will confirm this 100% is running the diagnostic mode to show fault codes on the engine warning light.

Edited by RB30-POWER
  • 1 month later...

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