[EstelleWerly]

:( Me again... this is what has been done so far: 88 Ford F150 yard plow trick. 5.0. The battery has been dying so we put a new one in.. truck ran fine plowed the yard. Went out next morning battery is dead. Took the battery in to the shop had it charged. Truck started up, ran a few seconds died and would not start again.. Bought and installed a new alternator, now no spark so put in a new coil. Turns over, but will not start, it still has no spark. Have added dry gas also. Wrote here and Rick suggested that is was probably the ignition module.. changed that and it started right up! Yeah... now it has spark and will not start on a day below freezing, sometimes not even when it's above freezing. Husband says it's getting gas. The carborator was replaced with a junkyard one sometime before we got it, if that matters. Doesn't seem to be getting a full crank off the battery, but is turning over and we have hooked our 1 ton van to the battery while trying to start if for an extra boost, but no go. Again, it is getting spark and supposedly gas, it will pop occasionally, but won't start up.. any more ideas for us? Timing is off a little also, but it has started and ran fine a few times with that going on. Can't get a timing light on it until it starts again, should have done it when it was starting. Thanks for any help you can offer.

[EstelleWerly]

No one? Hmmmm :confused:

[TxGreaseMonkey]

. Test all underhood and underdash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-t...tml#post252145

You may want to remove each underhood fuse, clean with #240 abrasive cloth or steel wool, lightly coat with dielectric grease, and reinstall. Do this one fuse at a time, being sure to replace it in the correct slot. Be sure to disconnect the negative battery cable first. Locate, remove, clean, and apply dielectric grease to the megafuse going to the alternator. It may be located on the end of the underhood fuse box.

I would also remove each underhood relay, clean the contacts, apply a light coating of dielectric grease, and reinstall.

I have encountered major corrosion on underhood fuses and relays on F-150s in Texas--huge source of problems. Pay particular attention to the Fuse Pump Relay, in the underhood fuse box.

. Change spark plugs (with the exact Motorcraft plug that came in the truck), rotor, distributor cap, and spark plug wires. I already recommended changing the Ignition Control Module (thank you).

. Clean battery terminals and cables. Afterwards, apply a light coating of dielectric grease.

. Clean starter motor and solenoid connections, applying dielectric grease afterwards.

. Check for parasitic battery drain:

https://www.askmehelpdesk.com/cars-t...tml#post241804

[chaosmaster1]

I had a 1989 f150 had the same problem I did a tuneup plugs,wires,&etc come to find out it's a fuel pump relay(there are normally two one fore each tank)and I replaced both of the relays still had the problem so every time it happens I stick a wire into one of the relays and touch it to the firewall and it sparks and the truck cranks right up also I would check every ground connection and check the ground straps on the chasis to either put new ones on it or clean them and check your solennoid should be above the battery

[EstelleWerly]

Thanks! We will be checking all that out now... appreciate your help! Have a great day. :)