mc2 audi 200 engine swap issue.

[skateboards and mk2s]

Anyone ever had an issue with the starter motor continuing to crank after the ignition switch is off?

Here is the deal.

Start the car runs fine.
Turn off the car starter continues to crank.
disconnect the battery and the starter stops.
Reconnect the battery and it is fine until you cycle the key again.
We took out the ignition switch and jumped the wiring. same issue.
New starter solenoid in. Same issue.

Any ideas?

[Rogviler]

The only time I've had that issue was with a bad starter. I went through a couple. The first one was turning the engine over slower and slower until one day it would just click. The next one did what yours is doing, it would start the car great, but occasionally it would get stuck cranking even if I would pull the key completely out. This one was actually from an MC1 that had been siting in the junkyard for awhile, so not a huge surprise I guess. A brand new starter and the car has started great ever since.

So I would try a whole new starter, I'm sure that'll fix it. I would have thought a new solenoid would make it work, but there must be something else that gets stuck in there.

-Rog

[skateboards and mk2s]

Thanks for the reply. We changed to a known good starter and still the same issue. I went through and reran every wire, cleaned all connections and checked far any issues. Didnt find anything really wrong but afterwards it has not done it again yet. Heres to crossed fingers.

[Jazzydub]

We jumped a wire off the starter solenoid once and it did that. I don't recall what wire it was.

[4rgsncps]

I have a '85q and have been contemplating a 200 swap. Any advice? Should I get the whole donor car or in pcs. I Alsohad this happen with my Jetta even after a new starter. Changed to a new relay and fuse it stopped!

[skateboards and mk2s]

The main advice I can give is to go slow. Torque everything correct, clean every ground before reinstalling and label every single wire and vacuum line clearly upon removal. Having the complete car parked right next to yours is huge but not totally necessary. Factor your total budget then add a third more.