evanmc Posted January 2, 2019 Share Posted January 2, 2019 1985 110 2.5NA This has cropped up only a few times out of many starts, but I would like to figure out what is going on here. This is a fairly new (6 month old) Bosch starter. The starter motor continues to spin after I've let off the key. Not engaged, so it's not cranking, but spinning as if the solenoid did not push engage the gear, but it is still turing. This happened after I cranked for a few seconds and let off the key -- not enough to start the engine. I have a knife switch on my battery, so it's easily stopped, but I would like to solve this. Ideas on what is going on here? Thanks, -Evan- Quote Link to comment Share on other sites More sharing options...
Tim2809 Posted January 3, 2019 Share Posted January 3, 2019 sounds like back of ignition switch melted/sticking Quote Link to comment Share on other sites More sharing options...
evanmc Posted January 4, 2019 Author Share Posted January 4, 2019 Yeah, I did consider that, but I'm trying to understand how that would produce the behavior where the starter motor spins, but is not engaged. Quote Link to comment Share on other sites More sharing options...
Lightning Posted January 4, 2019 Share Posted January 4, 2019 I had this on my TD5 the engine actually started on mine but the starter motor carried on spinning. Obviously no longer engaged. Fault was the ignition switch as suggested above. Quote Link to comment Share on other sites More sharing options...
evanmc Posted March 26, 2019 Author Share Posted March 26, 2019 I have replaced the ignition switch as well as the starter battery, and I still had this happen. The starter motor stops spinning, of course, when I use the knife switch on the battery. When I engage the knife switch again, however, I get a spark as I close the switch, and if the clutch is engaged and the car is in gear, the vehicle with lurch forward a bit. Once again, this does not happen every time Thanks, -Evan- Quote Link to comment Share on other sites More sharing options...
cackshifter Posted March 27, 2019 Share Posted March 27, 2019 Next thing to look at I would suggest is the starter solenoid; maybe the contacts weld together sometimes? Or, if it's within warranty, return the starter. Quote Link to comment Share on other sites More sharing options...
Linc 110 Posted December 31, 2020 Share Posted December 31, 2020 Hi, I have a 2.5 N/A ex-military 110. I tried to start it yesterday. The starter motor started to crank over the engine for about 10 seconds then the engine stopped cranking but the starter motor was still spinning. Disconnected the terminal to stop it. Would you suggest replacing the starter motor first, then the switch? Quote Link to comment Share on other sites More sharing options...
cackshifter Posted January 1, 2021 Share Posted January 1, 2021 The problem is probably contacts on the starter solenoid welded together or sufficient current leaking into the solenoid low power circuit to keep it partially energised. If the latter, disconnecting the solenoid circuit should stop the starter, otherwise if it keeps going it points to welded contacts. If so, you might get away with stripping the solenoid and cleaning up the contacts, or replacing the solenoid, rather than the whole starter. If pulling the solenoid feed stops it, you are looking at an ignition switch Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.