Hey everyone. Im new around here, so I hope you guys can help me out. I am a new jetta owner (but not new vw owner) and unfortunately after owning my '95 Jetta GL for only a month, Im already experiencing problems. 136,00 miles. 5sp manual.

I bought this car used about a month ago. It seemed to be fine on the hwy for two hours back to school after I bought it, but now it sporadically will sputter when I am on the hwy and lose about 5-10 mph until the gas pedal regains its function and allows me to accelerate again. It only does it when Im on the hwy or interstate and happens more often the faster I drive.
I can't figure out why it's doing this. I thought maybe changing the fuel filter would help, but that hasnt, unfortunately.
The only thing that I can think of (and im not too VW intelligent, so this could be way off) is that it seems to only do it after I fill the gas tank and it has more than a half of a tank in it. Once the tank has ran through about half way, it usually will run fine on the hwy and interstate. I can't figure out if maybe it has something to do with that? Or if that is coincidence.
If you guys can give me ANY ideas, I would really appreciate. It seems this one has got a lot of people stumped.
Thanks.

 

hey my buddy also had this problem.

one time the revs would drop, and then run up to 6,000, it was a spark plug problem. Replaced it, and it was fine.

for the second problem the gas pedal not workin, it is actually a clutch problem. My buddy went for the stage 2 clutch, for 600 bucks, or you could take it somewhere else and get a cheaper one.

 

Any engine codes ever pop?