I have a 1992 Escort, and it starts doing that right around the time it needs its 30,000 mile check-up.
Probably the fuel filter. Change it.
i have a 2.0L 2000 jetta and it did the same thing, I had to have the throttle body and 02 sensor replaced.
yes, you are causing it to run richer.
Check your tensioner
Yes. A bad cam sensor can cause slight hesitation of the vehicle, ultimately resulting in complete loss of power suddenly while accelerating. If bad, the cam sensor worsens, possible causing the vehicle not to start.
If you have replaced plugs and wire most likely one of your coil pack usually run about $50
Either drought or disease.
Diffusion.
Could be a turbocharger, or a low oil level in a manual transmission causing it to "howl".
It's a good possibility that the old oil was never drained, then the new oil added. Now there is way too much oil in the engine causing the sputter.
Several tings could be causing your problem: for instructions on how to set the timing. A corroded battery terminal can cause you CPU computer to malfunction. Your O2 sensor could be defected. You will need to have a computer diagnostic test to determine the code, which is causing the problem.
The RPM normally increases as you push the race pedal in your VW. However, it is possible that the wire for RPM might be broken, causing it to suddenly increase without race.