7mopar
Well-Known Member
If I fail to write a parts and year manual the next owner will be at a loss. Most is Chrysler or Ram original. The key will be knowing from what and the year.
Great you got it started, don't run it too long with the coil straight to 12v unless it's a internal resistor coil. If it's a external resistor coil like Mopar usually are you need the ballast resistor to cut down the voltage when running.Alright, did some tests and got it - the truck runs!
First, took the coil positive, and re-routed it directly from battery positive, no ballast resistor. No dice.
But, the cranking while on ignition 1 did go away.
Then, I threw in the old coil, with the same wiring setup. Bam! started right up. Starter only engages on ignition 2.
So my brand new aftermarket coil is just...bad. That is a bummer.
But the good news is that it runs great, and it sounds good (even with open manifolds)!
So, still gotta diagnose the weird cranking condition, but at least I have some clues - and I know I didn't mess us the cam or distributor timing.
We'll see if I can get it ironed out. I still have all of the little loose ends to tie up before I can drive it. A working throttle pedal would be nice...
Yeah, I'm not planning to run it that way long term, just helped to diagnose the issue. I gotta figure out where the issue is - very strange one.Great you got it started, don't run it too long with the coil straight to 12v unless it's a internal resistor coil. If it's a external resistor coil like Mopar usually are you need the ballast resistor to cut down the voltage when running.
Thanks for uploading! Hopefully it will help deduce what's going onHere is the wiring diagram I have used for years. if not 5 pin forget about pin 3 and associated wiring. No dual ballsit will be required with the 4 pin setup.
I've only run the truck a little bit with it, but the new aluminum rad works great, as far as I can tell.I was wondering how that aluminum radiator is working out? I have to replace mine and the choices are limited.
That sucks, but if you have an engine you're going to put in, at least you're not totally screwed. It's always fun to take apart an engine and determine what and how it happened.Figured I should post an update to this thread for all those wondering - the engine is truck is seized. Something went wrong between getting it to the shop and it moving to the back of the lot... it won't turn over in either direction with a big breaker bar on the crank pulley. Sparkles in the oil.
It's strange, since I did the full break-in procedure for the new cam to the T, and when I drained the oil after running it for the break-in period, there wasn't any sparkly stuff in that oil. So I'm a bit stumped. But Not too worried about that - I have to start thinking about the new engine that's going in it. My mechanic's dad has a lower mileage 318 sitting around and we're going to throw that in the truck after a once-over.
Will update with progress as it happens.
Second time's the charm? Hope so.
Thanks, yeah. Honestly the best possible situation for it to happen, so it feels pretty lucky. Starting to prep the engine/engine bay for pulling out the old motor today. It will be good to get this thing running again!That sucks, but if you have an engine you're going to put in, at least you're not totally screwed. It's always fun to take apart an engine and determine what and how it happened.