Originally Posted by
martysmartie
Due to the fact the dpeed drops when the valve is disconnected it shows the valve to be working.
Rather something is telling it to open when at running temp, it could well be as said the CTS, these go out of range over time and thus give false info to the ECU, do it seem to be overfuelling?
Is the base idle set correctly, i.e. when at running temp and the valve disconnected AND all electrical equipment switched off, you want to see a speed of 850-900 RPM.
It can also be down to a bad TPS calibration, which is fairly easy to check.
It should then raise and drop back again when the valve is reconnected (obviously not at the moment, in your case)
Martin
Hello Martin
I put a complete sensor kit on it about two years ago, think i still have the old cts so i can change that over and see if it makes a difference, thing is the car runs really well and there is no sign of overfuelling???
when i first disconnected the valve the revs dropped to approx 1500 on the gauge, however after driving for a short while it was settled at about 900 where it always used to be??
Another thing, when i got home last night after a 20 mile drive i thought i'd connect it back up and it seemed ok again? until i drove it down the road and it started playing up again??
How do you check the tps calibration?? as i've never touched this could it be the tps itself???
thanks, ben