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O T Ford Pickup starter

D

doorman

Member
Got a '86 Ford F150 with a 4.9 six cyl. and a C6 auto trans. Starter would not engage, replaced it. Truck started about four times and broke drive gear. got another starter and noticed a few bad teeth on ring gear. Replaced flex plate and installed new starter. Truck started one time and now just makes a loud grinding noise. Any help with a remedy would be greatly appreciated. Thank You.
 
If the engine has slipped timing it could kick back and instantly ruin a starter/ring gear. Assuming your parts are correct for the engine, and installed correctly, it might be that. Are the mounting holes or locating ring damaged? Jim
 
Not sure about an 86 but back in the 70's the ign module had a retard circuit for starting. Like Jim said if that goes bad it can and will kick back.
 
Where did you get the starter from? I've never had good luck with anything electrical from AutoZone, don't shop there anyway unless it's the only place open. I've had a couple times where I've gotten 2 bad starters in a row. I could see the first one getting torn up from the bad flex plate easily enough. Maybe put some Prussian Blue on the starter teeth and see just how much it's not engaging. If that has the normal small 2 bolt starter the EFI 4.9 has, there really isn't any way to shim them like a Chevy starter. I've had quite a few 4.9's, and anytime I had an issue like yours, it was always the starter itself. Like I said, I was on my 3rd starter the last time I had an issue before I got one that worked correctly. Had alternators the same way.
 
Had truck running after first starter was installed, but have not been able to start since new flex plate. Teeth on starter drive show only about 3/16" deep contact with ring gear. Drive is advancing fully toward ring gear. How could it slip time sitting? Thanks for all help.
 
I believe ford used several different starters during that time period. some look the same and bolt on easy but the nose part is different and will break nose end if not right for the transmission used.
 

Any chance you can get the original starter back and compare it to the replacements.

Off topic but the same problem, I worked on a 65 ford with a 352 it ate starter drives up the final fix was I was lucky enoufh to have a original starter off a 390 (same set up as the 352). I never could find a replacement that fit like the original end frame off a original starter.

It went a little deeper than that tho, a starter bolt has been drilled and heli-coiled at some point in its lifetime the bolt hole was crocked. It had a Cruise-o-matic I just happen to have a bell housing and the spacer plate that goes between the engine and transmission all in said and done NO aftermarket starter fit correctly...

Don't hold me to this I think the plate tween the engine and trans aligns the starter and That's IT, its a simple set up and a beach to try and get a handle on starter drive mesh to the flywheel...
 
Did you happen to compare the old starter to the new one real close, I never liked rebuilt anything, seems like something's always wrong.
 
I?d say that this second replacement starter is also bad or just offset for a slightly different application. I would possibly, just return it and go to your second choice parts store and try one from them. Hopefully they carry a different brand that is more careful about making sure the core they rebuild is then boxed and numbered to fit back to its original application. My 2 cents.
 
don't have original starter, the non working starter on truck when I got it was a rebuilt. This may be where the problem started. I may go to salvage yard and buy one off of a wreck.
 
Also got a bad battery from them, they replaced it but would not honor the warranty. Never again.
 
If you're reasonably sure the engine/trans is the original, try searching this link.

Or go to the dealer with the VIN, ask for a remanufactured starter.

That should put you back to the original correct starter.

When you replaced the flex plate, were the alignment dowel pins in the block?
Motorcraft Parts
 
FYI, the timing will jump when you shut it off. I doubt that is your problem though. I will ask,"a C-6 in a 1/2 ton 6 cyl?"
 
Yes, the plate does center the starter.

There are also alignment pins or rings, can't remember which. If they are missing, the plate and transmission will be misaligned.
 
Don't blame you Jon, I will not, unless it's an urgently needed part I need to get moving by morning. Sucks CarQuest closes at 5:30.
 
Re-built starters and alternators from all of the national parts store chains are crap. I have had good luck with local auto electric shops who re-build the stuff you bring to them.
 
There are always two sides of every story. Would like to hear the other side. Bet they are not the same.
 
C-6 and AOD have different flex plates one is offset more than the other. Also there is a different starter for an auto and manual transmission. My guess is you?ve got the wrong combination of parts.
 

I looked at AAP and NAPA both list automatic and manual they say nothing about what automatic automatic transmission just a automatic. It looks like a 9 teeth drive is the most common I did find NAPA list a starter with 10 a teeth drive for a automatic...

RAY 24492271

I would be look'N the salvage yards for a starter that's identical to his and go from there. I looked at Fords on line parts site 1990 is as far back and it goes :(

Its about impossible to check starter drive to flywheel fit on most fords unless you have a transmission case to sacrifice, as in my first post I would be looking for some original parts to compare. to.
 
Thanks. Looked at napa site and I will be going there tomorrow. Apparently the previous owner started this problem when he and his parts salesman didn't compare
original unit with replacement unit.
 

A electrical repair (starter and alternator) shop may have the information you need. Napa may have a catalog that may go deeper into the application. Post the part number you are using.

Bob's good at this where's he at "Yo Bob"
 
theres a difference between a starter for a manual and a auto trans, look for a like 82 automatic starter and get it from ford if you can or tale your old one and get it rebuilt.
 
(quoted from post at 08:59:59 12/12/17) FYI, the timing will jump when you shut it off. I doubt that is your problem though. I will ask,"a C-6 in a 1/2 ton 6 cyl?"
Click to expand...

The 4.9 (300) Ford 6 cylinder engine doesn't have a timing chain like most engines, it has timing gears. Though the gears can wear out and strip it hardly ever happens.

I found it odd myself, but most every 6 cylinder automatic Ford pickup I ever worked on had a C6 transmission, while 302 V8 trucks used the smaller C4.
 
(quoted from post at 09:36:48 12/12/17) Oreilly is on my side of town. But Carquest is best. I tend to look up my own parts, so if there's a problem it's my own fault.
Click to expand...



Carquest is very good.As good as NAPA,maybe better in some locations.Advance Auto bought out the local Carquest store but nothing has changed,yet ,except the owner.Part of the purchase agreement is that all the Carquest employees remain on the job.So far so good.
 
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