What’s up guys so I have a 1989 ford f150 5.8l truck was running good then out of no where died a few times out of no where found out the alternator was dead and draining my battery causing the truck to shut off due to draining power I replaced the alternator and everything was good truck was running good then became hard to start again and the key stoped working it wouldt engage the starter I would turn it and nothing would happen if I jumped the solinoid it would turn over but not start so I though it was ignition switch replaced that and now truck turns over but still no spark I also hooked up a test light to negative battery terminal and probed the two wires on ignition coil plug and left one I get 12v the right side green wire I get nothing the light wants to light up but is very faint and don’t show a reading are both wires supposed to be hot when the key is in the on position




STUFF REPLACED SO FAR

oem motor craft ignition switch from parts giant

complete new distributor I did reuse my old distributor sensor that sits on the side tho witch is the original most likely from 1989


also had a second ignition coil sitting around unknown if it’s good but I tried that one also and got the same no spark results

 

I assume the sensor on the side of the distributor you are talking about is the ignition module? I would remove it and take it to a parts store that can test it. Very common for them to go dead.

When you reinstall the ignition module be sure to apply heat sink grease to the back of it.

 

yes sorry drew a blank the ignition module and ok will do I also have a brand new one that came with the distributor but it was an off brand and figured the oem one would be better but I’ll try swapping it and see if anything changes and yes I do have the thermopaste thank you for your help . But any way to test these ignition coils to see if they are good before I buy a new one just to rule it out

 

I don't know how to test a coil. Most any parts store can test them pretty easily I believe. Coils do go dead but not very often. Much more common for an ignition module to go dead.

 

Thanks buddy u where right turned out to be the ignition module swapped a new one in fires right up