"Tony49122" <tony49122 (AT) gmail (DOT) com> ha escrit al
missatge:6a54eeb6-d325-49be-9921-2276039ad603 (AT) m7g2000prd (DOT) googlegroups.com...
Thanks for writing back, Tony! :-)

The engine may falter many times in a row, but it keeps running and it's
totally unpredictable. This issue may not show up for like a couple months
then do it non-stop for a week. This has been happening on and off for over
a hundred thousand miles now. The relay #109 is in like new
condition--replaced once. I took the car to many car mechanics --both VW
dealers and independent-- but they didn't seem to have a clue about this
engine problem. Nothing seems to be recorded permanently on the on-board
computer.

On Oct 14, 5:10*am, "Wao" <w... (AT) server (DOT) mm> wrote:
Hi, I'm afraid I don't know what to suggest, I'm not at all familiar
with diesels other than the theory on how they work. Somethings to
check:
- clogged fuel filter?
- combustion air flow unbobstructed?
- exhaust system not periodically clogged or broken?
- any relationship to how full is the fuel tank?
- wiggle the key in the ignition to see if problem goes away? (worn
out contacts in ignition switch)
- your fuel consumption/mileage reasonable?
- any difference when engine under load or just cruising?
- not sure if a diesel has vacuum lines, but if it did, any leak?

Thanks Tony! I'll keep and eye on those things but this faltering issue is
so sporadic that it'll take me some time to check them out.