My 85 A2 Jetta Turbodiesel has just recently started a vibration at
idle.
Idle speed is about the same 8-900 and reving it somewhat does not
smooth it
out. Cold start can be on or off. Starts well. Seems to be running
great,
just seems to be shaking more than it has in the past.

Any ideas?

Slightly out of time??

Broken or wore out front motor mount or other , pump timing needs adjusted,
low compression in 1 cylinder. fuel injectors are loose or leaking in the
head . injector pump fuel line leak, or valves need adjusted.
<marko66 (AT) gmail (DOT) com> wrote

I vote the right side engine mount (cushion). <g>
Take a block of wood and use it on top of a floor jack to lift the engine up
a little while it is idling and vibrating.
See if the vibration lessens.

later,
dave
(One out of many daves)


"none2u" <none2u (AT) notrealatall (DOT) bye> wrote

Yea, a very good answer. Mine sagged once and it was rubbing metal to metal.
"dave AKA vwdoc1" <vwdoc1 (AT) hotmail (DOT) com> wrote

Clean the throttle body and carb.

Right Side Engine Mount might be deteriorating. Carefully lift the engine
with a floorjack and a block of wood with the engine idling to see if that
stops the vibration.
Also check the V-Belts to make sure that they are adjusted properly.

Does the '85 Jetta TD have a throttle body and a carb?

later,
dave
(One out of many daves)
http://vwdoc1.tripod.com/



"History" <yesindeedtomeplease (AT) ohyes (DOT) com> wrote