vr6 obd2 not working

[p0u1 14]

ok changed the maf, cat, lamba, sensor, fuel filter, checked the coil pack for cracks its all good but its still playing up over 3000rpm :-/ what else could it be???

apart from that i had to fix a hole in the side of my gearbox this weekend aswell, i only noticed something was wrong when it started wineing through every gear, so im get annoyed now :-(

[ashmk3 0]

Ecu in limp mode perhaps?

[p0u1 14]

would limp mode only cut in now and again or would it go into limp mode then stay in limp mode?

because i can have my foot flat on the floor it will pull all the way to 3k and sometimes all the way to 7k rpm, then also i can have power all the way to 3k rpm it looses power for a few secounds then gets all of it back to redline and some joilty on the way from 3k to 7k but mostly working right, its a weird one, and my car wont scan on vagcom so i have to use trial and error :-/

[Rikki 2]

Try the cam sensor.....up next to the coil pack. If thats not sensing right might be givin false readings only some of the time and limiting something!

[oldmandon 1]

I know its a different type of car, but I had an mx5 that did the same thing, would only rev to so much then loose all power. It turned out to be the cat itself. The honeycomb had fallen apart and turned sideways blocking the exhaust basically. This caused massive back presure supressing the engines ability to make more power. Had a sport cat made at a fraction of the genuine price, never had the same problem again.......just a thought...........

[p0u1 14]

iv changed the cat to a good cat which was tested on my mates vr before he decated another cat to put on his car so the cats working my old one had died though, cam sesore theres no way of cleaning them is there, but i will have a look tonight and try borrow one.

[Rikki 2]

You can try to clean it....it may be caked in black gunk. Just brake cleaner or wd40 clean it up and try it!

[p0u1 14]

its cool i called my mate up, the one who lent me the cat, maf and lamba sensor and he said pop round his latter to pick one of his spares up, so i will update you tomorrow, i owe you a drink if it works lol

[p0u1 14]

ok changed the cam sensor yesterday it made no diffrence, so to list what i done so far:

cam sensor

cat

lamba sensore

fuel filter

maf

cleaned TB

[Rikki 2]

Hmmm then next i would try the crank sensor as this will limit revs....its a bit harder to change which is why i suggested the cam first!

[p0u1 14]

well i was lucky anloth to borrow one of them yesterday aswell but im yet to fix it

[Gazbarber1982 3]

Have you had it on vagcom? You could do with getting it on vagcom and try clearing the fault codes. Maybe try adapting the throttle body if you've had it disconnected?