[Vwdiesel] TDI non-start

[Val Christian]

Shalyn,

Try changing the glow time to a longer time, and see if the 
glow light stays on.  That would at least give you a spot
check on some level of ECM functioning.  Then you could switch 
back.

I'm working a start issue on my 03 Jetta, which is getting 
progressively worse.  I even tested the 4 year old battery.
My test showed OK (heck, it'll crank for 3 or 4 minutes!),
so I took it to AZ, and their computer tester shows it as 
OK as well.  The glows are OK, I lengthed the glow time.
I believe the compression is good (economy is good).  The engine
is getting fuel, because before it starts, there's a fuel fog.

I bought a new adapter, and will compression check, but I
believe that will be a waste of time.  In my case, the irony
is that it can be lifeless, cranking away, and then it will just
fire up.  You can get full power, and there's no rough running.

The problem has been growing for several years, and 60K miles,
so one of these days it just won't work, and I can figure out
the real problem.

All the common theories about injectors, compression, etc, I have
a hard time believing, because on a good day (no rain, snow),
taking a long interstate trip, it will do about 60 mpg tank to 
tank.

Good luck.

Val


> 
> I'm finding that most of the time I'm spending on this problem are 
> perusing the manual and the archives at TDIClub.com instead of in the 
> driveway with a wrench. 
> 
> I've established that there is some kind of ECM or other electrical 
> problem, most likely.  Neither the check engine or glow plug lights come 
> on when the key is turned to the "on" position.  This apparently 
> indicates that there is no power to the ECM or that the ECM is hosed. 
> 
> Not that I know why that would be.  The 109 relay is brand new.  There 
> has been some other weirdness lately.  Some of the adaptations I had 
> made w/ VAG-COM have reset themselves to factory settings a couple of 
> times and I've had to re-adjust the idle fueling. 
> 
> -Shalyn
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