rb26 wont rev over 3000

[PHATR32]

hey i got a r32 gtr, and i recently changed its timing belt and spark plugs.

i just started it and it idles good but wont rev over 3000rpm, plus theres a loud whining noise coming from the timing belt cover.

i tihnk i over tighene the belt, which is causing the whining.

any ideas why it cuts out at 3000rpm?

i gapped theplugs correctly, 1.1mm,

i also cleaned the afms with metho, would that stuff em up?

thanx

steve

[C_DawG]

Check fault codes, not sure about the belt issue, but sounds like an AFM problem and its going into limp mode. Try running it with the AFM's unplugged and see if it behaves the same.

[RB30-POWER]

Sounds like a faulty AFM to me, as has been said above.

Diags will confirm it.

[PHATR32]

thanx for the replys but ive foun the problem. it ended up being the afm wiring. i jiggled it and it fixed the problem. im gonna have cut the bad bit out and rewire it.

i also just sligtly loosened the timing belt but its still whining. i noticed that the belt is rubbing on the little cover on the crankshaft, its one that goes on before the main pulley goes on.

i understand its to stop the belt from coming off, but this is actually rubbing the side of the bellt of so you can see the thread.

how can it be fixed???

steve

[yogi000]

i replaced the two little plates that sit on the crack shaft and protect the timing belt(before and after the crank gear....only because i had such a bad time removing the pulley that i bent them slightly and was making the slightest whirring noise that drove me mad.

also apparently hi performance belts make some noise compared to geniune oem ones depending what they're made of.

George

[PHATR32]

this belt is an oem one. the noise is real loud, yo can hear it with the bonnet down.

it looks like the belt is trying to come of the crank shaft.

anyone else got any ideas?

steve

[SHUTO-BOY]

check voltage of your afm's, if one is very low, then it should make the rev limiter effect

a bit of new timing belt noise is ok

Nice GTR!bayside blue?

[RB30-POWER]

There shouldnt be any noise from a timing belt.

Is the belt sitting in the middle of the cam gears and crank gear?

It shouldn't be running on anything.

The only thing that could possibly make a noise is the belt tensioner if the bearings are shot

[SteveL]

i also just sligtly loosened the timing belt but its still whining. i noticed that the belt is rubbing on the little cover on the crankshaft, its one that goes on before the main pulley goes on.

i understand its to stop the belt from coming off, but this is actually rubbing the side of the bellt of so you can see the thread.

Are you sure you haven't got the 'cover' (like a large thin washer ??) backwards ?? It will rub on the belt if it's not installed the right way round .....

[PHATR32]

na its definetly the right way around. the tensioers also look mint.

its weird, the belt is sitting dead on the pulleys, and can gears but is sitting on the edge of the crank gear.

looks lke ill have to open her up again.

steve