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1995 VW Jetta III 2.0 Liter Engine stumbles and bucks when warm. The check engine light does NOT come on, Idles smoothly. 181,000 miles on odometer

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juanpobre
New User

Apr 2, 2009, 4:17 PM

Post #1 of 3 (2942 views)
1995 VW Jetta III 2.0 Liter Engine stumbles and bucks when warm. The check engine light does NOT come on, Idles smoothly. 181,000 miles on odometer Sign In
All electrical connections appear solid ... engine does not smoke, knock or overheat. When I mash on the gas it runs like a scalded cat, but when I use part throttle the car becomes a bucking bronco ... oh yeah, it idles smoothly and dead quiet ... with the hood down you can barely hear it. I replaced the fuel filter and it seemed like it helped for a few miles and then the same problem popped up ... also note that the bucking problem is somewhat intermittant, but it starts running correctly only rarely and never for long.HELP!!!!


(This post was edited by juanpobre on Apr 2, 2009, 4:23 PM)


Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Apr 2, 2009, 4:21 PM

Post #2 of 3 (2931 views)
Re: 1995 VW Jetta III 2.0 Liter Engine stumbles and bucks when warm. The check engine light does NOT come on, Idles smoothly. 181,000 miles on odometer Sign In
Using an ohmeter, check the TPS for glitches while moving throttle very slowly from closed to wide open. (engine off) Since I don't work on Euro cars, not sure if the MAF sensor is 'cleanable', but another thing to check.
Loren
SW Washington


juanpobre
New User

Apr 2, 2009, 4:28 PM

Post #3 of 3 (2928 views)
Re: 1995 VW Jetta III 2.0 Liter Engine stumbles and bucks when warm. The check engine light does NOT come on, Idles smoothly. 181,000 miles on odometer Sign In
thx ... will do in the morning





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