My 2.1 watercooled is playing up ...reading the Bentleys theres lots of resistance checks to do ...just hoping someone has had the same problem!!!
It starts fine but has a flat spot on take off ,which then sends the idle to 2000rpm and has no power ...trying to clear it will cause backfiring/popping thru the intake.persistence will clear it and top end is fine ..until you slow down or change back a gear!!!
Thanks in advance to any helpers

1 check that both fuel filters are good
2 the charcole canister may be stuffed
3 check the 5th injector is working
and also the computer cold start is ok
good luck

Thanks for the advice Greedy53

Hey there,

here's my suggestions, I've been through the rough running a few times with my Syncro, check the micro switch on the throttle body is switching, with the engine off move the throttle butterfly slowly off idle, you should be able to here it 'click' if not it may need adjusting / replacing, they can get corroded and stop working, todays lesson will be Bently 24.35.

If that doesn't fix it replace the Temp 2 sensor, just replaced mine, made a surprising difference, really smoothed out cold starts + general running.
Oxy sensor can also can make quite a difference. both the Oxy and Temp2 tend to go out of range gradually rather than just outright fail.

Steve.

Thanks Steve ..will let you know how i go ..lucky ive got a 'backup' beetle at the moment!!!!

It's in the throttle body or rather the small switch which controls fuel.
I would gather it is set too far retarted.


Firstly drop fuel pump and remove rust from pump...
Correctly re attach wires and then. Adjust small allan/Hex(4mm?) key throttle fuel on/off switch on bottom of throttle body;
if u have seen it you will know what i am talking about.

Hey ...iwish 4 a syncro ..ill try that on the weekend ..let you know how i go ..thanks for the help

If you haven't already seen it, there is a dealer manual called " Digifant pro training manual" which contains VW factory info and basic explanation of the system and how to fix and adjust.http://members.verizon.net/blumax/protrainingdigifantvanagon.htm this is the first link that google spat out there is also a site that you can down load a zipped version, if you have a look.

good luck with it,

Steve.

Digipants Pro ...its very good ...thanks for the lead steve ...ive bookmarked it..no success yet ...found the airfilter trap full of water ...good washable airfilter which looks like its stopped it???..no clicking at the throttle , and the resistance is wrong 0.06 at idle position with no change thru range to full throttle ...so needs further investigation,,,after i try adjusting the the throttle switch...
Also got a strange humming noise coming from the rear cab vents (dualcab) ..wondering if that has something to do with fuel tank/charcoal cannister
Thanks for any help!!

How goes?
Any progress???


Interesting link syncro; actually a little more elaborating than the Bentley.
Hang on it is the Bentley manual.

[ Edited on 15-9-2007 by Iwish4aSynchro ]

Sorted ...thanks to luke pell ..who had a throttle body assembly which i borrowed to try...all good now ...will replace the oxygen sensor and am looking for a 'go fast chip' for the puter...anyone have any clues where to get these???
Thanks to all for your advice

vintage vw at campsi nsw
they sponser this site you will find them here

Thanks Greedy!!!

New throttle body??

Yep ...new throttle body.....changed the wheels while it was off the road to merc alloys ...mustve forgot to tighten the pass front ...lost it on the test run ..scary stuff ...need to fit longer studs ..any clues on where to get these???

i got mine from frank tonittos at silverdale ,but most tyre places should be able to get them for you:thumb

Ok i am doing the same thing at present wheel studs that is.
As the Merc rims i have see post.
http://forums.aussieveedubbers.com/viewtopic.php?tid=65063 

Oh yeh how much was "new" throttle body. U2U $$ if u like.
i am dealing with the slight jutter or surge at low RPM in 3rd to 4th gear just going through town at 55ks in 4th that kinda thing.

[ Edited on 20-9-2007 by Iwish4aSynchro ]