JTD 16v Missing Low Down Power
so this has got me stumped now, bloody thing.
its a 1.9 jtd m-jet 16v.
I'm missing low end power, you hit about 2.5k and it takes off like a mad badger, but low down nothing at all.
I suspected the MAF, so unplugged it, went for a drive and it pulls brilliantly without the MAF plugged in. great, new MAF job done.
now I have tried a MAF from my local garage, albeit second hand, made no difference, so wrote that off as a dead MAF. Ordered a new MAF, fitted it, still no low end power. leave it unplugged and it goes brilliantly.
not sure where to go next? I've gone over the VNT system with a fine tooth comb, it all works just fine, any actuator test, vacuum seems great and it clearly works as I have great power with MAF unplugged.
I've checked, cleaned and refitted the EGR and cleaned out the MAP sensor whilst I was at it and I am now completely stumped.
Can it honestly be that 3 dead MAFs, wouldnt be suprised if mine is dead but the second hand unit I got the garage I was told was good and I do trust them and the one I got brand new is genuine BOSCH direct from a BOSCH service centre.
what do we all think?