GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: Judderi on 21 December 2003, 21:04
-
2.0 16v ABF
I am wanting to replace the inpulse sensor in a desperate effort to sort a running problem. It is located under the oil filter and front engine mount. I have removed the oil filter but am still unable to get to the sensor because of the engine mount. What is the easiest way to do this job????????
-
Do you mean knock sensor?
-
You have to take the engine mounting off, there is a small allen key holding it in. The last one I changed was for a intermitent non start and the sensor was about ?150 :o :o, fixed the fault tho ;D.
Steve.
-
Ive managed to replace the sensor now. i did have to remove the engine mount. unfortunately it did not solve my problem. The car cuts out if you press the accelerator quickly. you have to build the revs up really really slowly. when its running it has no power at all, probbably as fast as a citroen 2cv! Not happy >:(
-
To GolfVR6
No i didnt mean the knock sensor but now you mention it which one is the knock sensor? Is there 2 of them at either side of the front of the block with a 10 or 12 mill bolt holding them in?
-
I think there is a knock sensor by the oil filter housing, and probably one on the rear of the block.
I pressume the sensor you have replaced was the crank sensor(engine speed sensor).
-
Yes after further investigation the impulse sensor is the crank sensor. however it didnt solve my problem. yet another ?110 down the drain!
-
What are the symtoms?
-
it does not pick up when the accelerator is pressed, just cuts out. after a bit more testing i think its something to do with fuel pressure because i clamped the fuel return line then revved it and it seemed to be much better. I can hear the fuel pump and the volt meter shows its coming on when the ignition is turned. Do you know if there is more than one fuel pump? Remember its the mk3 engine in a mk2. Will the standard mk2 exterior pump be supplying enough pressure (it has so far)?
-
it may have a lift pump in the tank.
-
Not sure about yours, but on a mk3 16v there is a second fuel pump that sits after the petrol tank.. apparently if this fails your car will hesitate.. if your main one goes your car simply wont start.
The main pump is about 100 quid, I may have to fit one myself to cure my stalling problem.
-
Ive now checked the fuel pressure. its all ok. a mechanic has checked everything else also and found no problems. We now know its overfueling and flooding itself. Maybee its the ecu?
-
Checked the oxygen sensor?
-
Ahh, I see.
What fuel system is on this?.
Steve.
-
Which is the oxygen sensor. as far as i know it only has an air temp sensor.
-
The oxygen sensor is screwed into the exhaust , usually the downpipe. It senses oxygen content in the exhaust and sends signals to the ECU so the mixture is spot on.
-
Is the oxygen sensor the same as the lamda probe?
-
Yes, when it is up to temp it sends a volage to the engine ECU. The ECU uses this to adjust the fuel mixture.
Steve.
-
SOLVED! The timing was out 6 teeth and the origional ecu had an idle fault. Why didnt the 1st mechanic realise that the timing was out. Its not brain surgery is it?