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VWT3 2.1 fuel injection
Posted: 10 Feb 2025, 07:36
by Smallage
Hello, after a long time at a standstill I am trying to get it running. When I manage to start it, after an indeterminate time, without stopping the engine, the accelerator stops working. Sometimes, after a while, the engine responds when I press the accelerator and the same thing happens again. When I press the accelerator it seems to choke but it doesn't stop, it's a strange idle. Please, can someone help me?
Re: VWT3 2.1 fuel injection
Posted: 10 Feb 2025, 19:16
by Rik
Hi! Have you checked that pressing the accelerator at that moment is actually moving the throttle in the engine bay? And how old is the fuel?
If I understand correctly all works fine at first. Does the change correlate with the engine warming up?
Re: VWT3 2.1 fuel injection
Posted: 12 Feb 2025, 08:41
by ajsimmo
Sticking AFM flap?
Sticking idle switch?
Bad earth connection on LHS head (changes with temperature).
I'd say check those first and report back.
E D I T: Oh, and which 2.1? DJ, MV and SS will all warrant slightly different approaches to diagnostics.
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