willmsus
Member
I have two NB TDI's a '98 & '03 both Man trans.
The '03 developed a cold start problem this summer at warm ambient temps. Had one bad glow plug code so I changed them all w/ new. Still hard starting but if the temp sensor on the head is un-plugged glow plugs come on and starts right up. So I replaced the Temp sensor. No change. Changed fuel filter looking for a air leak problem.
Thought I'd switch the GP relay between the two and the '03 doesn't have one in the #10 relay spot, Started looking and there seem to be quite a few diffs ( no Map or 2nd temp sensor in the coolant line) it's an ALH, but seems to have some of the features of the BEW. The Bently Man doesn't show this from what I've been able to find (I have a newer one that covers the wife's '08 gasser). This morning, temp out 21 deg. glow plugs came on car started right up so only happens at warm ambient. But, I'm still a bit stumped as to where the GP Relay is. Any thoughts?
The '03 developed a cold start problem this summer at warm ambient temps. Had one bad glow plug code so I changed them all w/ new. Still hard starting but if the temp sensor on the head is un-plugged glow plugs come on and starts right up. So I replaced the Temp sensor. No change. Changed fuel filter looking for a air leak problem.
Thought I'd switch the GP relay between the two and the '03 doesn't have one in the #10 relay spot, Started looking and there seem to be quite a few diffs ( no Map or 2nd temp sensor in the coolant line) it's an ALH, but seems to have some of the features of the BEW. The Bently Man doesn't show this from what I've been able to find (I have a newer one that covers the wife's '08 gasser). This morning, temp out 21 deg. glow plugs came on car started right up so only happens at warm ambient. But, I'm still a bit stumped as to where the GP Relay is. Any thoughts?