88 Stang with a tossed starter October 13, 2008, 11:25:17 AM So my 88 mustang goes to start as normal, fires up... Starter won't stop. Panicing and pulling the key, cutting the fuel and ign, motor shuts off, but the starter is STILL going. Pull the batt cable to stop it. Did this yesterday, tapped the relay with a wrench, got it to work normal so I could drive it home. I purchased and installed a new relay (The device on the fender next to the batt under the hood) Went to fire it up, same thing happened again. My next guess is the starter itself but I've never had a ford do that to me and I've owned a shiznit ton of fords. I just wanna ask here for some more angles. Quote Selected
88 Stang with a tossed starter Reply #1 – October 13, 2008, 05:18:41 PM Is all the wiring stock?If it is a stock starter motor I don't see how the motor can be the problem. Since it stopped when you disconnected the battery, it was not mechanically stuck engaged.If it has been upgraded to a newer style motor that has a starter solenoid built in, then it could be the motor.Pull off the small Red/LB wire that pushes onto the side of the starter relay. Check with your meter that it is only hot in Start and drops in Run.If you don't have a meter, pull this wire the next time the starter won't stop. If this stops it, you have a bad ignition switch. Quote Selected
88 Stang with a tossed starter Reply #2 – October 13, 2008, 05:57:20 PM I've seen Ford starter drives "hang" and not release, pulling the battery cable doesn't fix them though... Sure sounds as is the relay was still receiving voltage... Pulling the small blue/red wire would confirm this... Quote Selected
88 Stang with a tossed starter Reply #3 – October 13, 2008, 08:22:07 PM yeah, I'd guess the starter solenoid. My old gray 86, the guy was telling me, "its got a new flywheel, starter, rear main seal...". I should a figured something was up. He was a Chevy guy, so he thought it had a wiring problem, not just the starter solenoid, which is built in on a Chevy. Quote Selected
88 Stang with a tossed starter Reply #4 – October 14, 2008, 01:25:19 AM Okay, well after further diagnosis. The problem didn't happen every time. Also, metering the trigger wire measured up hot 12v on start, and around 3v on run. Sometimes I got nothing out of it too. Not sure, we pulled and check and tried and retried so many times, I don't even know anymore. We also swapped the relay with the one in my 90 5.0 Bronco, so far after probably 15 starts, the problem has not shown its face again. As far as the bronco, 2 starts went okay, and I parked it. so we'll see. but that was with the first original relay that showed a problem. the new one purchased today, sits on the bench. and is in neither cars. I was leaning towards the new relay also being bad in the same manner, very unlikely. Nothing was really changed, other than relay swapping so the real cause of the problem is still a mystery. Anyone have any ideas? Quote Selected
88 Stang with a tossed starter Reply #5 – October 14, 2008, 02:23:27 PM 3 volts on the "trigger" wire in Run is suspicious. Should be 0 volts.Check out the ignition switch. A low voltage is not enough to pick the relay, but it may be enough to hold it after it is picked. Quote Selected
88 Stang with a tossed starter Reply #6 – October 14, 2008, 04:42:22 PM Quote from: softtouch;2393733 volts on the "trigger" wire in Run is suspicious. Should be 0 volts.Check out the ignition switch. A low voltage is not enough to pick the relay, but it may be enough to hold it after it is picked.X2... Quote Selected
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