Just picked up an '88 Jetta GL with 97k. CE1 DigiII manual. I've owned the car since monday and have been dealing with annoying issues since the start.
It has several running issues that are driving me nuts.
New parts and fixes.
New BLUE CTS(I think its supposed to be white?)
New cap, rotor and wires as well as being timed.
I think the plugs are new but are Autolites
I just redid all the grounds. From Positive terminal to starter and to the Alt.
New cable from negative terminal to trans, valve cover to intake mani and from there to the firewall As well as the body ground next to the battery and put new ends on all the wires attached to the terminals.
It idles at 1800 and I've never seen it idle below 1200.
It feels like its missing or hesitating at neutral throttle(just holding an rpm while driving)
It just began spark knocking yesterday .
The power feels very high in the rpm band with very little TQ at lower rpms. (Have trouble accelerating in 5th on slight grades)
It also doesn't start too smoothly, no dieseling when its shut off but it just doesn't start like a DigiII car should.
PLEASE give me input on this. Ive searched around and haven't found any posts that address all my problems at once while including my grounding fix.
I suspect a vacuum leak, the wrong CTS, improper timing and a malfunctioning ISV. I dont think the ECU is acting up, but I havnt gotten in that far.