I have tried to get this resolved elsewhere without success.
My 1998 Avant TDI was running ok but a bit lumpy when you put the revs at about 1800 - they would waver.
I disconnected the MAF sensor plug and the problems started. There was no difference in the idling so i replaced the plug. The next morning the car was in limp mode when i started (or maybe a split second after i started it)
It jumps/jerks into gear and will not rev or drive over 40 mph etc.
It could be reset after leaving the ignition on for a few minutes then it would be ok until next morning.
It got worse so i booked in to VW and they reset the ECU etc and it drove all day no problem.
Next morning back in limp mode. Took it back and they reset again. One code which i dont know but he thought it was the pump pressure or something.
It drove ok again til next morning.
I failed to get it out of limp mode after several times resetting myself.
A gearbox specialist said the MAF sensor tells the gearbox and pump what speed etc the car is going so a bad sensor would make the gearbox jump into gear if it was faulty. (this is from standstill not driving)
I just found a damaged vacuum hose off the inlet manifold system - it goes under the water reservoir and have fixed this but it is still in limp and i cant reset now.
VW want to replace the ECU or pump (easy option but no guarantees of course) but i think it is related to me messing with the MAF plug. It drove great when reset by VAGCOM)
What should i do? Can i check the cabling on the MAF sensor to check it is ok?
Many thanks
My 1998 Avant TDI was running ok but a bit lumpy when you put the revs at about 1800 - they would waver.
I disconnected the MAF sensor plug and the problems started. There was no difference in the idling so i replaced the plug. The next morning the car was in limp mode when i started (or maybe a split second after i started it)
It jumps/jerks into gear and will not rev or drive over 40 mph etc.
It could be reset after leaving the ignition on for a few minutes then it would be ok until next morning.
It got worse so i booked in to VW and they reset the ECU etc and it drove all day no problem.
Next morning back in limp mode. Took it back and they reset again. One code which i dont know but he thought it was the pump pressure or something.
It drove ok again til next morning.
I failed to get it out of limp mode after several times resetting myself.
A gearbox specialist said the MAF sensor tells the gearbox and pump what speed etc the car is going so a bad sensor would make the gearbox jump into gear if it was faulty. (this is from standstill not driving)
I just found a damaged vacuum hose off the inlet manifold system - it goes under the water reservoir and have fixed this but it is still in limp and i cant reset now.
VW want to replace the ECU or pump (easy option but no guarantees of course) but i think it is related to me messing with the MAF plug. It drove great when reset by VAGCOM)
What should i do? Can i check the cabling on the MAF sensor to check it is ok?
Many thanks