Truck isnt getting spark anymore. im at the end of my rope lol

[Botlfed]

I'll check em again, but if I cant find something this time im gonna pull the entire harness and check it.

[canada4g63]

I'm pretty sure you have a bad ground.

[Botlfed]

That was what I thought but why would it just now do it, im gonna look this weekend but I have a feeling im gonna end up pulling the harness.

[canada4g63]

Did you check spark for just one coil or multiple? Also did you check to make sure the coils are getting power to them?

[Botlfed]

I actually changed the coils, no was reading to make sure I was doing it right.

[skeet]

the sensors you changed , were they new or used but in working order? an this has me puzzled as i been thinking what it could be, unless you have a short in the wiring and youre sure your grounds are clean and tight its mind boggling

[banker099]

Ignition relay?

Also might run a jumper wire from the ground on the coil pack main plug to a good ground and see if you get spark

Try ignition relay first if u haven't yet...swap it with some other relay and see what happens

[Botlfed]

Ignition relay?

Also might run a jumper wire from the ground on the coil pack main plug to a good ground and see if you get spark

Try ignition relay first if u haven't yet...swap it with some other relay and see what happens

I pulled the relays and put new ones in, how do I do this jumper thing.

[Botlfed]

the sensors you changed , were they new or used but in working order? an this has me puzzled as i been thinking what it could be, unless you have a short in the wiring and youre sure your grounds are clean and tight its mind boggling

Im gonna go over it again this weekend but I already pulled the harness almost completly out to fix a ground wire that didn't need to be fixed but was about a 1% chance it wasn't grounded so I fixed it lol but itll get found this weekend I just needed a few Ideas to check before I tear everything apart.....again

[banker099]

Been a while since i have done this, but try grounding the black wire on the large plug that goes into the main plug on the coil packs, then check for spark.