Starter Problem Solved! Reply #15 – May 18, 2010, 01:48:44 AM Quote from: tbirdsps;322253Ok, I thought I'd add the bad news.My 92 Tbird did just this same thing. Starter kept on running unless I turned off the key.I'm so smart I changed the ignition switch....no change...I'm so smart I changed the solenoid...no change.Surely it can't be the starter....wrong! That's what fixed it. I've never had another problem. It was the bendix. It would not disengage, but only sometimes.You have a 1992 Thunderbird with the newer type Ford starters that has the solenoid piggy back on the starter motor. In your case a stuck bendix will cause the solenoid contacts to stay closed. My car has the classic Ford starter with the fender mounted solenoid.Mine keeps spinning the starter with the key OFF!If the solenoid is working properly, it is supposed to cut the current to the starter completely when the key is released whether the bendix is stuck or not. The only way a classic Ford starter gets 12V is if the solenoid contacts are closed. There is no constant supply of voltage to the starter at all times. so, it has to be the ignition switch not disengaging the 12V to the S terminal or the starter is drawing so much current that it is fusing the contacts stuck closed during starting.This is a typical Ford starter wiring diagram for our 88 and earlier cars regardless of engine size. Quote Selected
Starter Problem Solved! Reply #16 – May 18, 2010, 02:04:05 AM Quote from: jrad235;322270Interesting...Watchdevil, I had the same issue last year, my problem was Napa solenoids. Had the original go out, replaced with Napa, worked for a month, failed(Stuck on), replaced with another one, failed 2 months later 150+ miles from home(Stuck on), replaced with ford OE for less than the cost of the other two, still going strong 6 months later.I am wondering about all these solenoids auto parts stores sell. They should not fuse themselves together that easily. I can always start my car on the first try and in some cases at least the second. Quote Selected
Starter Problem Solved! Reply #17 – May 18, 2010, 09:02:47 AM Yeah, mine usually starts within a couple cranks. Just go buy the solenoid at the dealer, should be fine.I was very unnerved when mine did it because it was dark out, and I certainly wasn't expecting it. Quote Selected
Starter Problem Solved! Reply #18 – May 18, 2010, 10:44:23 AM Make sure you have a good, fully charged battery. Doesn't seem logical that it could be the battery but I've had good sources tell me that can be (part of) the problem. Weirdness can happen at low voltage/high current.Makes sense to have everything in the starting circuit working properly.Like other folks mentioned, don't always trust new parts, there seems to be a lot of import junk being sold these days.I just recently bought a new headlight for an Escort and the hi/lo beams were wired incorrectly! After searching the forums for information, I found out it was a known problem that was made known to the manufacturer but a correction was never made.Just shows how much concern there is for building quality parts for the US market. The only concern seems to be $$$$$ Quote Selected
Starter Problem Solved! Reply #19 – May 19, 2010, 12:55:43 AM Quote from: Watchdevil;322239Definitely not the bendix. The symptom is definitely the starter keeps on running and the only way to stop it is to take off the negative battery cable. When I put the cable back on it instantly starts.well ,,then I suppose your right on your theory the solenoid contacts are staying closed / fusing together.Never had that exact symptom ever! Had others but not that one.Thats gotta be hell on the solenoid and the starter.change em out as a matched set. ign/starter / solenoid. Theyve had too much abnormal abuse and no telling what contacts are over tempered with all these watts.Did you bother to check and see if the solenoid has continuity across it with the batt unhooked? and see if it opens when it cools down?hop you have the TFI sprout conn undone during all this batt unhook/rehook. May spike the pickup or the tfi if your not careful....or even the alt voltage regulator.we cant predict everything though, im sure you'll get to the bottom of it.I busted open one of these solenoids once,, never did find the little diode illustrated. I did find one helava spring though. Quote Selected
Starter Problem Solved! Reply #20 – May 19, 2010, 01:14:41 AM Quote from: jcassity;322413.Did you bother to check and see if the solenoid has continuity across it with the batt unhooked? and see if it opens when it cools down?Yes I did and the solenoid did have continuity with the battery unhooked. After it finally cooled down there was no longer continuity. It has been raining so I have not had time to see if the S wire from the ignition switch is staying on longer than it should possibly causing the solenoid to stay closed too long and fusing the contacts together inside. However, today I made someone's day at work by figuring out he had no voltage to the "S" terminal on the solenoid of his Ford Ranger when he turned the key to start. I told him ignition switch or clutch switch. The clutch switch is flimsy plastic and delicate and I told him to check that first then procede to the ignition switch. Got him started back up so he could leave by jumping the "S" terminal on the solenoid to the battery + lead. Quote Selected
Starter Problem Solved! Reply #21 – May 19, 2010, 01:34:04 AM your prob right then,, the solenoid is the main issue.think about it, it fixes itself when it cools down.Its jaming up intermally. the specs are off on the plunger inside it and its probably cantering slightly. drill out the rivits, add some slight lubrication, add screws in place of riivts and see what happens.I know your the type that likes to totally disect problems to the level of perfection.I cant see how the ign sw could be the primary culpert and not be getting hot to you by feeling it when the trouble is in process. Quote Selected
Starter Problem Solved! Reply #22 – May 19, 2010, 01:42:15 AM Quote from: jcassity;322419your prob right then,, the solenoid is the main issue.think about it, it fixes itself when it cools down.Its jaming up intermally. the specs are off on the plunger inside it and its probably cantering slightly. drill out the rivits, add some slight lubrication, add screws in place of riivts and see what happens.I know your the type that likes to totally disect problems to the level of perfection.I cant see how the ign sw could be the primary culpert and not be getting hot to you by feeling it when the trouble is in process.Do you suppose the angle it's mounted has anything to do with it not returning open easier? One othe thing i forgot to mention was that the original solenoid in the car was the one that was low profile and sit flush against the inside fender. I replaced it with the same type. However when I looked up parts for my car it shows that it should have the old style solenoid with the stand off bracket. My initial diagnosis entertained the possibility that water was saturating the flush mount solenoid when it was raining. So this last solenoid I bought I got the stand-off bracket type so water will not directing flow onto it. Seemed to make no difference though, the new stand-off solenoid fused up closed and cooled off later. Quote Selected
Starter Problem Solved! Reply #23 – May 19, 2010, 01:50:11 AM them solenoids dont need help from gravity,, upside down or sideways, that spring in there is very strong. it could oppose anything and win.my gut says its either the diode is shorted or the plunger itself is engaging crooked Im surprised that you can not interrupt the problem while it is process by tapping on the side of the solenoid pretty hard with a screwdriver handle or hunk of wood. Quote Selected
Starter Problem Solved! Reply #24 – May 19, 2010, 01:53:16 AM hey, just had a funky idea........get yourself one of those spray cans of air for pc cleaning.shake it up real friggin goodflip it upside down and spray the solenoid.basically freezing it ,,sort of.quickly go start the car and see if the solenoid keeps the starter going.if it doesnt, you just manipulated the heat ingredient and prevneted the problem,,but also you just found the problem for real. Quote Selected
Starter Problem Solved! Reply #25 – May 19, 2010, 02:01:09 AM Quote from: jcassity;322424hey, just had a funky idea........get yourself one of those spray cans of air for pc cleaning.shake it up real friggin goodflip it upside down and spray the solenoid.basically freezing it ,,sort of.quickly go start the car and see if the solenoid keeps the starter going.if it doesnt, you just manipulated the heat ingredient and prevneted the problem,,but also you just found the problem for real.Good idea man!After the last starter run-on incident I have not been able to get the problem to duplicate. It just happens from time to time... Quote Selected
Starter Problem Solved! Reply #26 – May 19, 2010, 02:02:30 AM Quote from: jcassity;322423them solenoids dont need help from gravity,, upside down or sideways, that spring in there is very strong. it could oppose anything and win.my gut says its either the diode is shorted or the plunger itself is engaging crooked Im surprised that you can not interrupt the problem while it is process by tapping on the side of the solenoid pretty hard with a screwdriver handle or hunk of wood.I did try that with no luck... I was beating that new solenoid with a wrench and it decided it was not going to let go until it cooled off. It's a thermal thing it seems.Seriously I have thought about running a starter cut off switch inside the car until this is fixed... LOL! Quote Selected
Starter Problem Solved! Reply #27 – May 19, 2010, 02:11:35 AM yeah, we can read about the fire later.a push button momentary on/off might be cool,,like vinnies.he put a lot of work into it. Quote Selected
Starter Problem Solved! Reply #28 – May 19, 2010, 02:17:59 AM http://www.foxtbirdcougarforums.com/showthread.php?t=23251&highlight=starter+button Quote Selected
Starter Problem Solved! Reply #29 – May 19, 2010, 08:31:48 PM Seriously Watchdevil?! OE SOLENOID! Quote Selected
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