Bump not Glow

AlgarveTdi

New member
Joined
Feb 15, 2017
Location
Portugal
TDI
A4 and passat
Greetings. I have this really annoying problem upon starting
I have a 1998 Audi a4 ahu 1.9 TDI installed in a vw t25 with an inverted a4 gearbox. Runs great. No missing. Sensible economy. Maybe a little sluggish but not by much.
When its cold its difficult to start. When its hot. Forget it. However a walking pace bump will start it every time
Specifically I am thinking fuel being controlled wrong. Crank case sensor maybe. The 3 wires to the sensor blue, black and one other I can't recall now. Where do these go?
Any help greatly appreciated. Thank you

PS I have a 1.9 TDI AGR sat on the drive ( literally engine sat on the drive) if I could use anything from that to test stuff out
 

AlgarveTdi

New member
Joined
Feb 15, 2017
Location
Portugal
TDI
A4 and passat
Is it possible that the crank sensor is broken without throwing a code? Wiring is all checked and connected properly
 

jettawreck

Top Post Dawg
Joined
Aug 2, 2004
Location
Northern Minnesota-55744
TDI
2001 Jetta and 2003 Jetta
Don't know if it's related, but '99 TDIs (at least the NA versions) had a hot start issue from new. A reflash or tune of the ECU resolves it.
 
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