GaryJeffery
New member
Hi all
New here so please forgive any ignorances
I have 2 1.9 TDI’s in my boat, both AWX engines from Passats.
On way back from a trip, one engine started behaving oddly, it seemed to lose a little power, I throttled up a bit to match rpms, then few seconds later revs rose as the power seemed to return, so I throttle down a little to match revs again (circa 3k rpm) this happened 2 or 3 times over a couple of minutes then the engine just died and won’t restart. No noises, no overheating or oil pressure probs, felt like fuel starvation.
In trying to diagnose the issue I have fitted a new fuel filter and bled through, no joy, had a spare crank sensor so fitted that still no joy. just cranks at a good speed but no start.
My thoughts are that it could be either electrical or mechanical, maybe the tandem pump? 109? Cam sensor? (Not sure that would stop it from starting tho) hoping someone will recognise the symptoms to point me in the right direction.
I don’t have the comms ports fitted in this installation, so can’t plug in a vagcom or similar. I am looking at getting to a breakers to pick one up and work out how to fit it. Can you plug in to the ECU directly?
FYI EGR is removed blanked off and deleted, vac circuit is just the basics for the turbo, no brake servo needed at sea! Foam conical air filter fitted just outside MAF with short intake to turbo side. ECU reprogged to 160 hp
Any pointers from the gurus most welcome.
If anyone interested, I can get some pics later of the install.
Best regards
Gary
New here so please forgive any ignorances
I have 2 1.9 TDI’s in my boat, both AWX engines from Passats.
On way back from a trip, one engine started behaving oddly, it seemed to lose a little power, I throttled up a bit to match rpms, then few seconds later revs rose as the power seemed to return, so I throttle down a little to match revs again (circa 3k rpm) this happened 2 or 3 times over a couple of minutes then the engine just died and won’t restart. No noises, no overheating or oil pressure probs, felt like fuel starvation.
In trying to diagnose the issue I have fitted a new fuel filter and bled through, no joy, had a spare crank sensor so fitted that still no joy. just cranks at a good speed but no start.
My thoughts are that it could be either electrical or mechanical, maybe the tandem pump? 109? Cam sensor? (Not sure that would stop it from starting tho) hoping someone will recognise the symptoms to point me in the right direction.
I don’t have the comms ports fitted in this installation, so can’t plug in a vagcom or similar. I am looking at getting to a breakers to pick one up and work out how to fit it. Can you plug in to the ECU directly?
FYI EGR is removed blanked off and deleted, vac circuit is just the basics for the turbo, no brake servo needed at sea! Foam conical air filter fitted just outside MAF with short intake to turbo side. ECU reprogged to 160 hp
Any pointers from the gurus most welcome.
If anyone interested, I can get some pics later of the install.
Best regards
Gary