R32 Gts-T Rev Limiting At Around 2500Rpm? How To Fix?

[Widesays]

hey guys,

today i started up the 1992 r32 gts-t, its stock with boost gauge and boost controller cat back exhaust, anyways, the car idles erratically and rev limits at around 2500rpm? how do i fix this asap? i've read elsewhere it could be the AFM or soemthing? any advice or a how to fix would be much appreciated.

also before this issue began my RPM gauge would go mental and turn completely past the redline, the revs don't change just the actual gauge itself, r these issues related??

Thanks

posted a video on youtube of the problem so so you can exactly what im talking about.

http://www.youtube.c...h?v=ZTDHzfr2h3I

Edited October 30, 2011 by Widesays

[Widesays]

Video of rpm gauge goin mental

http://www.youtube.com/watch?v=VDUO4EYyct

[jhjones]

Definitely sounds like AFM. Unplug it and see if the car runs the same.

Try this:

http://www.skylinesaustralia.com/forums/topic/113284-fixing-your-rb26-afms/

[kaluah8123]

Definitely sounds like AFM. Unplug it and see if the car runs the same.

Try this:

http://www.skylinesa...your-rb26-afms/

car wont run without the afm matey but yeh it definetely sounds like it they do weird things depending on how low the voltage in them has gone just get a replacement one they are pretty cheap second hand for around 100 u should find one under. u havent tinkered with anything while the car has been laying there idle?

[Bsa]

haVe a green lable rb20 afm for sale pm me if interested

[KerrodR33]

You sure it's not just missfiring at 2500? It could be your coilpacks if it is

[Bsa]

It's def your afm it's in limp mode

[Widesays]

ok so heres an update, i started it up this morning and it was fine again? wtf, it first happened while i was going through a round about in 3rd gear, got out from the round about and the gear started limiting at 2500rpm so i pulled over and while the car was rolling (still running) i gave it a rev and it fixed itself, drove it home with no issue, then the next day went to start it and it was limiting as i drove up the block it hit 2.5k rpm and started like bunny hopping so took it home, left it, started it up in the arvo was fine, no issues. then as of now, this morning, is all good again??? could the wiring be short circuiting or is my afm dying?? as of right now i just drove it and its fine...only reason i ask about the wiring is because in the 1 - 2 weeks that ive owned the car, the window reg died (replaced it), the rpm gauge goes mental and last time i touched the heater i couldn't turn it off >< lol so i had to bash it then it turned off lol...any thoughts?

[scotty nm35]

There is probably a bad solder joint inside the AFM. If you have a soldering iron you can crack it open and repair it using the How To on here somewhere. If not you will have to replace it.

[jhjones]

car wont run without the afm matey but yeh it definetely sounds like it they do weird things depending on how low the voltage in them has gone just get a replacement one they are pretty cheap second hand for around 100 u should find one under. u havent tinkered with anything while the car has been laying there idle?

?? Mine starts with the AFM unpluged, but it idles at like 1300rpm and limited to 2500rpm. Have I got a vacumm leak or something?

[pipster11]

if it won't run without the afm then you have another problem

r32's definitely will run without one, i drove about 5kms without one when my cooler pipe let go (exploded out of the car and into the bush, never saw that one again

[Bsa]

i did that except run over it and squashed it

[kaluah8123]

?? Mine starts with the AFM unpluged, but it idles at like 1300rpm and limited to 2500rpm. Have I got a vacumm leak or something?

it will run like shit though thats what i m saying but yeh sounds like it is still the afm they are so cheap to buy just try one if its not then maybe a computer fault i got a spare one here i can give u for post if u wanna try it

[jhjones]

it will run like shit though thats what i m saying but yeh sounds like it is still the afm they are so cheap to buy just try one if its not then maybe a computer fault i got a spare one here i can give u for post if u wanna try it

Mines fine just unplugged it to see what would happen. I'm from NZ anyway.