2.0 16v, 1990 GLI. Mods: Techtonics exhaust, Techtonics chip, K&N airfilter. Ignition all factory. 210k miles.
Symptoms: i'll be driving along, and it seems to go into 'fail safe' mode. Low on power, especially from idle, but it doesn't die. When I turn the motor off, it resets no issue. Seems to have some correlation to fuel richness.
Also - i read on a thread that it could be issue with Hall sender unit. What are the symptoms of a Hall sender unit failure? Ignition distributor failure? Coil failure?
I'm going to change the distributor and coil this weekend, but was curious as to what people thought.
As soon as I read the first post I was thinking coil after scrolling down I see I was right I'm pretty good at mental troubleshooting
It was the coil for sure as it goes bad it causes random power loss through misfiring,
you can tell by the electrical battery acid smell if it's bad or leaking when they leak they drip blackish/clear