Vehicle & Technical > Discovery

D2 TD5 Hesitant - Again!

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Shabba277:
Done to death I know, but I have searched every where on all forums and still come up blank with my car.  It hunts at 2500-3000 revs, common problem I know on the td5 but so far its had...
Injector harness
engine loom
new standard turbo hoses
waste gate vavle is free
waste gate solinoid valve replaced
new air flow
egr bypass
fuel press reg
no faults codes showing
last week i thought i had cracked this problem, i discovered the turbo pipe on the egr valve bypass kit had slipped down the casting so narrowing the diam of the pipe and eventually closing it under load, it was fine for a week or so but now the problem is back, stipped it all out today checked all turbo hoses i can't see anything that could be causing this now can anyone see anything I might have missed?

beast5680:
does it do it at a certain position on the throttle pedal? i,ve had a problem with a throttle potentiometer on another vehicle that produced a fault like that which was a fault with the pedal

Shabba277:
It only does it in 3 and 4 th gear under load. Throttle pot had crossed my mind but I think it would be more of a fault and show up on tb?

Hightower:
Is the air pressure and temp sensor nice and clean (found on the inlet manifold)?  If it's gunked up then a quick clean with brake cleaner or something similar will help.

Shabba277:
Yeah cleaned the sensors first but no change.

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