Starter stays engaged after engine starts

Well, it's a new starter, the last one burned up. And we don't release the ignition switch, cause we never turn key to start position, it cranks by itself. In the "key on" position, never turn to start position.

Starter shuts off in drive and reverse only. Will look at the diagrams and see if I can figure it out.

I guess when I get time, and more money I will look for a new starter and replace it, but while the starter is down I will attach another wire for a toggle switch just in case it doesn't fix the problem. Too hard to get at the wires to work on when starter is on the car, so I'll do that before I re install to make sure I have plenty of wire to work with if need be-thanks.

This was my daughters car and a shop replaced the starter once before. Trouble all started when another shop installed a inter lock unit for her DUI. Year later, Now they removed it and problem is still there-they said they didn't do it but prior there were no issues.

Issue started after the interlock was installed, daughter didn't know what the noise was and sat in park with it engaged until it started smoking, starter burned up. Not sure how long or how often she did this but, after towed in a new starter was installed by the tow driver. Car now starts but noise is still there but at least she had a car to drive at that time. Towed to a local shop, replaced starter but mechanic didn't test drive cause he didn't want to blow into interlock device-height of COVID 19 at that time, so she took the car and drove it-when I found out I told her to slap into gear as soon as it started and shut off in drive. Been this way for little over a year now. So yes doing prior, in fact right after the interlock was installed, but after they took it off, still doing it. Their fault or just a coincidence? Don't know.

Oh, they said what they did had no bearing on this issue-they told me key switch was bad, so when I got control of vehicle I replaced the key switch, pretty easy after watching a video. No difference, same problem. So, I guess I will try a starter when I get time but will still try to install a wire of some type for a toggle switch just as a backup measure.

If I turn the key on to do any testing the starter will crank the engine and start, along with grinding the Bendix against the flywheel. That's one problem. I'll need to jack up the car and remove the trigger wire first from the starter. Ignition switch was replaced with a new one, no change, still the same. I do not know where they tapped in, I wish I did. If I knew what they messed with it would help but they won't say anything except what they did had no bearing on this issue and they said the removed it and car did the same thing, then they re connected until her year was up. I still think they were the cause but I have no idea where to look where they could have done something. I will try looking at diagram but a toggle switch is looking easier from trigger wire to inside the car. I wish I could find trigger wire under the hood so it was easier to reach.

Diagrams help but the printing of the words, well it's so small I can't see it clearly.

That image is much better thanks. It's going to be a few days until I get the car back in the garage and do any work on it but this should help. Too hot outside to do it. Thanks again.

Just for the record I have an old imac, very very old. Sorry

Well, I tried in vein to locate where they might have hooked up & later removed the ignition interlock-they won't tell me?

Some of those wires are all wrapped together in a harness and much to hard to reach to hunt for one wire. I'm not gumby, much to old and non flexible-most won't even know who gumby is !

So, I replaced the starter again with a new one, no change. As a last ditch effort I cut the trigger wire going to the starter and there is not much in length to work with, ran that wire inside the car. Had to drill and then seal the hole I drilled in the floor near the floor console, sent wire to a toggle switch mounted under the dash below the steering wheel, then the other side wire back through the hole in floor to the starter trigger wire on the starter. Note, wires were wrapped inside a larger diameter, 2" long section of vacuum hose and sealed so metal edges from drilled hole in floor would not wear the wires through. Took a long time and a major pain in the butt, however my problem is gone. Turn key to on position, when ready, flip toggle switch to start, and after engine starts flip switch the other direction. I used the toggle switch cause I had a few laying around. Later I plan to purchase old time push button starter switch. They are about $8.00 and will work better but the bull work is done. So, after replacing the ignition switch, starter, and countless hours of checking and testing wires, the toggle switch and a few feet of wire solved the problem. Note: did not fix the original problem caused by the installer of ignition interlock. Have searched the internet and found those installers messed up a lot of vehicles during install but never accept the fact that it was something they did, found many people unhappy saying their car has never been the same. But daughter got caught DUI and had to have it installed to drive, now dad has to spend his money to resolve it as usual. Now, I own the car again. Thanks for the help trying to find the problem, hope this may help someone else down the road.