Volkswagen Passat (2001 - 2005) - 2001 TDi PD - Faulty injector??

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Sun 10 Feb 2008 21:16
2001 TDi PD - Faulty injector?? - Red Rose
My Passat (2001) TDI PD has started to misfire occasionally. If I turn off the ignition and restart, the misfire has gone. A local mechanic says its the injector on no 1 cylinder. THese cost well over £300 each and I would like more advice before I splash out. A few days before the problem started I went through some fairly deep water can this have had any bearing? How does the problem correct it self by turning the ignition off and on some times for weeks other times for hours only. Advice please.

{year/engine details added to subject header as per the various requests to do so}

Edited by Dynamic Dave on 11/02/2008 at 00:04

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Sun 10 Feb 2008 21:41
Faulty injector?? - Screwloose
R/Rose

Exactly what code number did he find? Before splashing out on an injector; I'd replace the injector's wiring loom inside the head and have a compression test done.

If water's got sucked into the engine, then you'll be needing a new one and the phone number of your insurers.
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Tue 12 Feb 2008 19:51
Faulty injector?? - Red Rose
Hi, screwloose, I do not know a code number. However I stood next to the guy when he conected to the diagnoses thingy and it read- intermitent fault injector 1 cylinder.
Any use. Redrose
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Tue 12 Feb 2008 20:03
Faulty injector?? - Screwloose

Go with my previous answer; injector looms are a common fault.
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Tue 12 Feb 2008 20:53
Faulty injector?? - injection doc
yep I would second that. Its a bad idea having a wiring loom running inside an engine. Its never been very satisfactory as landrover know well!. Definatley test first.
Doc
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Tue 25 Mar 2008 19:23
Faulty injector?? - Red Rose
Thanks for all the info. I have just found out that my engine number starts with the letters AVN. Does this make a difference to your advice? R.R>
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Tue 25 Mar 2008 19:35
Faulty injector?? - Screwloose
RR

I don't have that number among the dozen or so TDi units. There are the common non-PD AFN/AVG and AVB/AVF among the PD units- but no AVN.

If it is a PD; I'd still go with the head loom first - a non-PD and I'd do a compression test, as this still could be water damage. Has the fault changed in the intervening period?
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Wed 26 Mar 2008 10:14
Faulty injector?? - Red Rose
Many thanks for your kind reply. Maybe Ive got mixed up in remembering the letters. Its old age.!! As we speak the car is being looked at by a mechanic and he has just rung to confirm that the wiring is at fault. In answer to your last question; yes it is now doing it continually hence the rush to the mechanic. Many many thanks again. R R
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