Rb25det Hits 2000rpm And Bounces Back

[Rednisr31]

so i got a 25 in a 31

hit 2k and the car just bounces back, revs just die back down

car idles high and over fuels

doesn't matter weather you load the car up or free rev it no difference

i tested my spare AFM as per what the r33 engine manual says, i have tried 2 AFM's and had the loom checked and its all good

what could be my problem guys?

sometimes the problem comes and goes, well it used to and now it wont, sometimes you could start the car and drive it and rev its f**king ring out, then you could turn it off, turn it back on 1 min later and it would idle high and not rev

i really need help this car has been on the road like 2 weeks in 14 weeks and its shitting me

either talk here or add me to msn please

[email protected]

thanks people

[paulr33]

afm

either shagged, unplugged, not grounded, not working or faulty

run stock ecu diag if you can to confirm. or check with a multimeter at idle

[Toasty]

umm there is something that makes your car do that. its a safety setting in your ecu i think... do a quick search of the forums and you should be able to come up with some results.

[Rednisr31]

cant run the diag cause the loom doesnt have the provisions to short out the 2 things (some shit about in the fusebox in the r33 in the manual)

any other way to run diag mode

[nick81xd]

Havent popped a cooler pipe off??

[Rednisr31]

i ran my piping from turbo straight into intake to make sure none of my piping was f**ked

no difference

but when i have popped pipes off ran different to this

lets say your driving down hill, hits like 2.5k and just makes a bovish woosh noise, then nothing, then you change gears and same shit

Edited June 3, 2007 by Rednisr31

[nick81xd]

righto, checked O2 sensor

[Rednisr31]

if by checked you mean unplugged and seen if anything changed then yes

hahahah no i havnt checked it, so they arent like rb30e where if the o2 isnt connected it makes no difference?

[cheez]

did u check to ensure the afm has got dry cracked solder point? if you checked, do it again, only this time use a soldering iron to heat up the solder points. this will ensure there are no under lying cracks.

[Rednisr31]

we re-soldered it and i got a spare afm aswell

[cheez]

have u reset the ecu?

[Rednisr31]

many many times

[cheez]

take it to a tuner man and get them to diagnose, might be worth your while to get a safc2/neo and tune with that, will eliminate some issues and youll be happy. all up prob will be fixed with around 500 odd.

[Rednisr31]

yeah... i think im going to have to

bit of a bummer, i may leave it cause im taking the engine out of it in a while and putting it in a 32, getting an aftermarket ecu at the same time, but i dont have a car to drive atm

[Rednisr31]

can anyone in brisbane suggest a good place to take it then wont ream my ring?