Hi I own a 1990 mk2 golf gti 8v and when I’m on the motorway or overtaking and the revs are around 3000-3500 rpm the car starts juddering and kangarooing and I have to either floor it or ease off to get back to normal. It pretty much only happens in 5th not really in lower gears. I have checked the distributor cap, leads and plugs as well as the main air intake pipe and all seems gd I am also fairly confident the the fuel pump is working correctly. Can anyone help me?
Must just be a vibration at that speed, possibly causing s bad connection to act up. Or else something in the MAF. I had one doing similar once, cleaning the track in the air flow meter, and the contacts on the plug on it (they were corroded / worn on the lower side) stopped it.
https://clubgti.com/forums/index.ph...ose-and-tune-your-mk2-digifant-gti-8v.124949/ on mine at certain revs/load i found it would jerk when the CO was set a little lean, sounds kinda similar to your symptoms
The contacts on the MAF looked good but gave them a clean anyway but when testing the resistance across the pins it was too high could this be a reason? I also gave the allen bolt for the CO levels a quarter turn and the car did seem to run a lot better but there was still slight juddering.
sounds like you're almost there, once you're happy everything checks out if you have a friendly local garage who will take some handy tax free back pocket money nice to have it set up on their pro co analyser
