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That problem happens a lot with older vehicles. The neutral safety switch no longer makes contact due to wear of the selector components. If you hold up on the gear selector it will most likely start every time.
You can adjust the selector rod from underneath the truck. There should be a rod with a long slot and a lock nut. You just need to loosen the lock nut and slide it to shorten the rod length a bit so it makes contact with the safety switch again and it will most likely line back up with drive letters on the column. It helps (not necessary) to have a person in the cab while you are adjusting the rod.
PLC, thanks for the detailed info, I did this last sunday and it worked great for about three days, now it is back again, however, the indicator still matches up with the letters. Is the switch bad?, Is it possible to bypass?
If this is a C-6, It may be that the neutral safety need to be adjusted to the shaft. Loosen the 2 bolts that hold the neutral saftey to the case. In neutral, there is a hole that you insert a #43 drill bit thru. Make sure it goes thru 3 holes in the switch. (Insert aprox 1/2 in.) Tighten the bolts. This should be done after the manual linkage is adjusted.
Thanks for the reply, I was going down that path thanks to partly trustable Haynes. However, what does a #43 cross reference to? For now, I will try to find one that fits.
Now, I'm really scratching the head...
Loosened the 2 bolts, placed shifter into neutral, stuck in drill bit and it went about 1/2 inch through. Not sure what else to do, so I tightened it back up and still will not start, unless I go through the gears with the left leg up...
Do you have reverse lights. They work thru the neutral safety switch. If you have them, then the switch is probably adjusted right. If not try loosening the bolts and rotating the switch slightly. Good luck Don
Yes the Reverse Light comes on in when the selector is in reverse.
Went back and check the alignment in neutral and the drill bit still slides in Is it possible for this switch to go bad?, Is there a way to bypass?
I suspose only half could go bad. Will it start in when you have the drill bit inserted? If so, I would go back to the shifter adjustment. They should be available from NAPA or who ever you deal with. You could bypass, but will really kick yourself when you forget, start it in gear and bust something. Don
Has to be a bad switch!
Is there anything in particular I need to know
or is it a straight forward remove and install.
Haynes does not provide any info...
So I went and bought a new neutral safety switch, oh and by the way Oreillys has the Motorcraft part for ~$37 but had to wait a day versus Ford who wanted ~$57....I waited the day. Anyways, put it on did the neutral adjust and the samething!!! I did notice that my batts were dead, charged them and they died trying to start the truck, however, I was only partly successful and that was when I placed the gear selector almost on "D" to which I felt that any more nudge I would sent the truck through the garage door.