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what are symtoms of "won't start"
no "key on" lights on dash when key turned to ignition?
starter will not spin over?
starter spins but doesn't engage?
engine turns with starter but will not fire up?
code 67=the neutral/drive switch is open/failed or wiring/connector failed
prevents engine from starting except in neutral and park
brake switch must also be functioning...prevents starting if failed open
don't have location for '90 model neutral/drive switch...suspect it may be on left hand side of tranny as in later models....someone with 90 model will come up with location
The starter spins and sometimes seems to engage momentarily for maybe one engine revolution and then just spins as long as I turn the key without turning the engine over anymore.Other times it just spins without engaging at all. All dash lights go on.
starter drive failed....pull and call/take to auto parts store that will test starter for you....Autozone and many others will do free test including drive
If the starter spins and the engine does not, the solenoid on your starter is not working.
When you crank the engine, two things happen:
1) The solenoid on the starter sucks the starter gear in to engage the flywheel
2) The starter spins and turns the flywheel, provided that step 1 is OK.
You need a new starter, or at least the big solenoid that sits on top of the starter. If the Neutral switch fails, your starter won't even spin at all since electricity to it is cut off.
Unless you disconnected the battery, you will continue to get code 67. Disconnect the negative cable for a minute to reset your codes. A/C should not have been on and that may be your problem. I am not sure if the sensors will resend an error code without running the engine. Try to get the engine started to get new codes.
I had an error code (634) MLP, also called a Neutral Safety Switch, on my 1990 F-150. It was easily adjusted by aligning the scribe marks on the sensor. It wasn't off by much, in fact the marks were so close, I couldn't believe I was getting the code. Cleared the code and I was good to go. You will probably need to clean the side of the unit to see the marks. No special tool needed as described in most manuals. Use a Cresent wrench after you loosen 2 screws to align the marks.
If starter spins but engine does not, could also be starter drive clutch. easy to change and cheap.
Ken
I think we are talking about the same thing here, Ken When I took the starter apart, there was fork that pushes the starter gear towards the flywheel, but it's driven by a great big solenoid.
I'd have to say that the clutch and the fork - solenoid are two different mechanisms.
I removed the starter and took it to Part Source for a starter test and it checked out fine. The solenoid slams the starter gear forward as it would to mesh with the flywheel and the motor spins fine. So after returning home I checked all the teeth on the flywheel. Also fine. But then I noticed while playing around with the pinion gear on the starter that sometimes it doesn't lock. It will spin freely in both directions. Well it should spin freely in one direction only and lock in the other. I think it's the clutch that controls this and starter tests don't check that.
ah, for the old days of real knowledgeable parts counter people instead of these Commie Wart rejects that can't even work the cash register, count change and find parts on the shelf.....let alone, test a starter drive bendix....
Commie Wart rejects-strong language. The guy at the parts counter apologized several times when I went back. I think he felt pretty stupid being that he's a mechanic.
Anyway, I picked up a starter rebuild kit for $20 cdn. Cheaper than buying a starter. Put the starter back in and changed the fuel filter while I was at it. Now the motor turns over fine but it still won't fire up.
It stalled on me a couple of times the last time I drove it. And then the starter thing developed. Who knows? Maybe the fuel pump.
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