youmitegetian
Active Member
So I’m getting there with my “new to me” disco (2004 TD5) with the help from this forum.
ACE leak turned out to be a loose banjo bolt.
The apparent auxiliary belt squealing was traced to a manifold issue, not a warped manifold but a loose one, 2 nuts loose, I missing, possibly after a refit from a warped manifold but who knows.
Next on the list is a hunting/misfire at higher revs.
I did have a “driver demand 1” fault and an overboost fault but both gone now the manifold is sorted so no faults now on Hawkeye.
If I slowly push the throttle I get a constant regular hunting at around 50% to 80% throttle, if I floor it I get a viscous misfire, not like a cylinder dropping, more like 5 cylinders dropping. I’ve checked the waste gate and it moves if I grip it with pliers, I’m assuming that’s correct as my other disco is the same. I’ve driven with the air flow metre disconnected with no difference, map sensor disconnected was fine but so sluggish it was like using maybe 1/3 throttle so wasn’t surprised I had no misfire.
I don’t want to throw parts at it in the off chance but would appreciate suggestions as to where to look next?
Fuel pump is a thought but an expensive gamble.
ACE leak turned out to be a loose banjo bolt.
The apparent auxiliary belt squealing was traced to a manifold issue, not a warped manifold but a loose one, 2 nuts loose, I missing, possibly after a refit from a warped manifold but who knows.
Next on the list is a hunting/misfire at higher revs.
I did have a “driver demand 1” fault and an overboost fault but both gone now the manifold is sorted so no faults now on Hawkeye.
If I slowly push the throttle I get a constant regular hunting at around 50% to 80% throttle, if I floor it I get a viscous misfire, not like a cylinder dropping, more like 5 cylinders dropping. I’ve checked the waste gate and it moves if I grip it with pliers, I’m assuming that’s correct as my other disco is the same. I’ve driven with the air flow metre disconnected with no difference, map sensor disconnected was fine but so sluggish it was like using maybe 1/3 throttle so wasn’t surprised I had no misfire.
I don’t want to throw parts at it in the off chance but would appreciate suggestions as to where to look next?
Fuel pump is a thought but an expensive gamble.
