172cup
When i had my car in at the garage ages ago, i had a diagnostic ran on it, which came back as saying the throttle position sensor circuit was faulty.
The mechanic (a good guy) said that it would only normally effect the cold starting of the car. I explained that i have no problems, and ignored it. There was no effect to the way the car drove or anything.
Quite a good while after that, i bought a full prospeed system and janspeed decat (with twin ports for lamda sensors). The guy i had the decat off had plugged the second port (after the cat) and said it stopped the light coming on. When i fitted it, i actually put both lamda sensors in.... and nothing came on. Drove fine, sounded ace, no gain in power however.
Anyway... about 10,000miles later i was driving quite hard and the engine management light came on (the small square box with cosine waves inside it) and went into 'limp home mode'. After turning the engine on & off again it reset itself, and drove lumpy as hell. When it come on shortly afterwards again... it also brought the emmisions light on.
It went away for a few months, but came back with a vengence. It always done it when you went on cam (hitting the 4k rpm). Now the emmissions light is on permenantly, and drives like a bag of shite as soon as you hit 4k.
Sometimes it controls the revs for me, and is as if someone is pulsing the pedal for me (reving freely between 2k and 4k continuously).
So i took it to the garage for a diagnostics again which brought up two faults.
1. was the same fault as before - throttle position sensor circuit
2. was second lamda sensor after the cat (which would be due to it being connected to a decat)
Anyway, guy at the garage said i most possibly need an entire new throttle body as it is an electronic pedal and everything is build in to the control module within the throttle body... and is going to cost an absolute fortune.
I don't want to have to do this as ive just spent £1200 getting a new subframe, antiroll bar, wishbone, discs, pads etc... and on top of that its due its 72k cambelt service!!
The lamda sensor is still plugged in to the decat pipe, and obviously considered plugging it off... but he seems more certain its the throttle body controls. Only thing i keep thinking is... if that warning was showing on the diagnostic before... why didn't that screw the way it drives back then? Surely it must be down to the decat (hopefully).
We've tried to reset the ECU and such, but as soon as you hit 4k again it screws it right back again.
If you drive with the foot to the floor, it drives fine (a little down on power if anything), however if you whats to sit at a constant speed above the 4k rpm (say 90mph) then it caughs and splutters massively to the point where it is undriveable.
What do you guys recon??
The mechanic (a good guy) said that it would only normally effect the cold starting of the car. I explained that i have no problems, and ignored it. There was no effect to the way the car drove or anything.
Quite a good while after that, i bought a full prospeed system and janspeed decat (with twin ports for lamda sensors). The guy i had the decat off had plugged the second port (after the cat) and said it stopped the light coming on. When i fitted it, i actually put both lamda sensors in.... and nothing came on. Drove fine, sounded ace, no gain in power however.
Anyway... about 10,000miles later i was driving quite hard and the engine management light came on (the small square box with cosine waves inside it) and went into 'limp home mode'. After turning the engine on & off again it reset itself, and drove lumpy as hell. When it come on shortly afterwards again... it also brought the emmisions light on.
It went away for a few months, but came back with a vengence. It always done it when you went on cam (hitting the 4k rpm). Now the emmissions light is on permenantly, and drives like a bag of shite as soon as you hit 4k.
Sometimes it controls the revs for me, and is as if someone is pulsing the pedal for me (reving freely between 2k and 4k continuously).
So i took it to the garage for a diagnostics again which brought up two faults.
1. was the same fault as before - throttle position sensor circuit
2. was second lamda sensor after the cat (which would be due to it being connected to a decat)
Anyway, guy at the garage said i most possibly need an entire new throttle body as it is an electronic pedal and everything is build in to the control module within the throttle body... and is going to cost an absolute fortune.
I don't want to have to do this as ive just spent £1200 getting a new subframe, antiroll bar, wishbone, discs, pads etc... and on top of that its due its 72k cambelt service!!
The lamda sensor is still plugged in to the decat pipe, and obviously considered plugging it off... but he seems more certain its the throttle body controls. Only thing i keep thinking is... if that warning was showing on the diagnostic before... why didn't that screw the way it drives back then? Surely it must be down to the decat (hopefully).
We've tried to reset the ECU and such, but as soon as you hit 4k again it screws it right back again.
If you drive with the foot to the floor, it drives fine (a little down on power if anything), however if you whats to sit at a constant speed above the 4k rpm (say 90mph) then it caughs and splutters massively to the point where it is undriveable.
What do you guys recon??
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Cheers
