Need to scan 1993 Jetta

[Mk4_30R_Ban]

@offroadzj

Vacuum is solid at 17-18 during idle and when it does get started, it maintains 17-18 and goes slightly up if I ease on the throttle to rev it up. if I “burp” the throttle and the engine bogs, it goes down to around 5 or less.

So far the parts I have swapped have been listed as the same part number; with the exception of the oxygen sensor which due to it being pre-cat, I would think it would be the same since it is the same engine.

start looking for things that are loose or broken. internet diagnostics go about as far as we are now.

its obd1. not much you can do about it unless someone has an old obd1 machine. trial and error. its a 2.0 8v. not much there to go wrong