tdi ecu light and fault code questions

[imortalmonkey]

My golf 110 tdi is down on power.

My questions are:

The ecu light is the glowplug light right?

Shouldnt it come on when I unplug the maf? and the map sensor?

Will i have fault codes even if I dont see the ecu light?


Thanks Aaron

[imortalmonkey]

Anyone know?

[kicky1]

unless the ecu sees something out of range it wont show a light.

my own 110bhp gt tdi didn't show a light but was down on power even with Vag Com at my disposal i had no codes to go at.

ended up changing the air flow meter and the boost control valve at the back of the bulkhead.

seemed to do the trick in my case at least. but it is a common fault.

regards

Dave

[golf tdi 02]

er glow plug light ?? ecu light ???
you mean engine manage light ???
any help is some better ???

[imortalmonkey]

er glow plug light ?? ecu light ???
you mean engine manage light ???
any help is some better ???

Yes I think so!! Diesels where so much simpler 15 years ago!! Yep engine management/glowplug light

[imortalmonkey]

unless the ecu sees something out of range it wont show a light.

my own 110bhp gt tdi didn't show a light but was down on power even with Vag Com at my disposal i had no codes to go at.

ended up changing the air flow meter and the boost control valve at the back of the bulkhead.

seemed to do the trick in my case at least. but it is a common fault.

regards

Dave

Thanks for the reply,maybe the maf or bcv then? I will read the fault codes and if none show then I think I will be changing the above