mikerajjers
Well-Known Member
I have a 2000 TD5 90 and I cannot get beyond 110-120 kmph. At first I thought this is the standard top speed, but there have been occasions it got to 140kmph with ease and 150kmph going down hill, so there must be a problem somewhere.
It pulls nicely through all gears, steady acceleration up to 110 and then nothing...stays there. I did a few tests connecting and disconnecting the MAF and basically I feel absolutely no difference between having the MAF cables connected or disconnected. I drove for about 60km with the MAF connected, then stopped at a layby, disconnected the MAF sensor and easily got to 140kmph. However, then had to slow down behind a lorry and again car only reached 110kmph after accelerating. I did the same process again 2 times but this time there was no difference, only got to 110kmph
Does the engine go into limp mode or something? Unfortunately I don't have a diagnostic tool.
Also, I recently (on a couple of occasions) felt a judder in power like a woo woo woo (quick and minor losses and gains in power) when rapidly accelerating in 4th and 5th gear. When I eased off the gas and accelerated more gradually the car was fine.
When I bought the car about 3 month ago I took it to a mechanic to check out a small oil leak...when I got home the MAF was disconnected and I don't know if I bought it like this or whether the mechanic unplugged it. I reconnected it and the car seemed to drive better for a brief period.
Am I correct in thinking this is likely to be a faulty MAF sensor or could these symptoms indicate a different issue? I don't think it is the waste gate stuck as I can hear it releasing pressure in lower gears. Could it be the EGR stuck open?
I changed the air filter for a K&N recently, but in hindsight these symptoms existed beforehand.
Any help would be much appreciated.
It pulls nicely through all gears, steady acceleration up to 110 and then nothing...stays there. I did a few tests connecting and disconnecting the MAF and basically I feel absolutely no difference between having the MAF cables connected or disconnected. I drove for about 60km with the MAF connected, then stopped at a layby, disconnected the MAF sensor and easily got to 140kmph. However, then had to slow down behind a lorry and again car only reached 110kmph after accelerating. I did the same process again 2 times but this time there was no difference, only got to 110kmph
Does the engine go into limp mode or something? Unfortunately I don't have a diagnostic tool.
Also, I recently (on a couple of occasions) felt a judder in power like a woo woo woo (quick and minor losses and gains in power) when rapidly accelerating in 4th and 5th gear. When I eased off the gas and accelerated more gradually the car was fine.
When I bought the car about 3 month ago I took it to a mechanic to check out a small oil leak...when I got home the MAF was disconnected and I don't know if I bought it like this or whether the mechanic unplugged it. I reconnected it and the car seemed to drive better for a brief period.
Am I correct in thinking this is likely to be a faulty MAF sensor or could these symptoms indicate a different issue? I don't think it is the waste gate stuck as I can hear it releasing pressure in lower gears. Could it be the EGR stuck open?
I changed the air filter for a K&N recently, but in hindsight these symptoms existed beforehand.
Any help would be much appreciated.
