No Start issue - UPDATE kinda long

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66dartgt

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For those of you who responded or read my posts earlier when I was trying to start my 66, you may recall I posted that I had it running.

Well - two days later it was back to no start. I rechecked everything twice, coil voltages, continuity tests, wiring, ballast, ignition boxes (ecu), dist pickup - no joy !

Keep in mind I have three ecu's which all test good, two used, one new mopar orange box.

Yesterday I decided okay the only thing left is the pickup in the dist. changed it out - no dice.

I throw my hands up - so I run down to autozone and buy a no name ecu, and a blaster coil thinking these are the only items left.

I stick the ecu in - bam its running. WTH ? All my other ecu's checked good, now this cheap parts store unit was the solution ? Damn it.

Returned the blaster.

I promptly threw the other ecu's I had as hard as I could at the cement sidewalk, and then in the trash. I would throw the ignition tester on the floor too but its my buddies.

BTW the car is not overheating now either, I suspect through my own combination of threatening and coersion that the car even started earlier in the week. I suspect the reason it overheated at that time was due to weak spark, much like retarded timing.

So, the bottom line ?

1) I know I had read that mopar orange boxes are junk - that I can confirm for certain. Shame on chrysler for selling such a piece of crap - mopar performance - indeed. :angry1:

2) Never rely on the results of a black box tester. :thefinge:

3) Always carry a spare new ecu that you have checked as a good piece on a running setup. :evil5:

As an aside - my buddy calls me late yesterday to ask about an ignition question on his 65 monaco. His old orange box died and when he installed a new orange box today it ran then it quit. I told him to go down to the parts store and get an off the shelf generic replacement and try that, after relating my experience of the last 1.5 weeks.

At least I can relax and focus on something more productive now, like getting the car mobile.

PEACE -
 
Most of the problems with the control units were with the grounds. A couple of old Mopar tech's from the 70's told me along time ago that the boxes need to have a seperate ground to the engine and not to rely on the fender/firewall for grounding, and make sure that the box and the block is very clean where the ground is going to be. This is a inherent problem with the Mopar or aftermarket units.
 
Yup, A good ground is a must. Bought a old 75 Valiant brogham.
from a old lady. It would start and idle. But it wouldn't go
over an idle. Checked the ground, cleaned it up and drove it
away. Didn't look back to see if she was pissed.
 
Ya know, I've seen a similar issue twice in the past year. Start checking stuff after it won't start. Solved it twice now by swapping out ECUs, not sure why tho. I know they're both good. Was starting to think it was the ECU plug connector getting flaky. Must be tickling that ground when I do the swap. Gonna add a ground wire to the block somewhere and see how it goes.
 
Yup, A good ground is a must. Bought a old 75 Valiant brogham.
from a old lady. It would start and idle. But it wouldn't go
over an idle. Checked the ground, cleaned it up and drove it
away. Didn't look back to see if she was pissed.

Man thats just wrong, taking advantage of a old lady.:wink:

hehehehehe
 
Thanks for the suggestions, but I have been running a ground strap from the block to the ecu all through this escapade. No grounding issues unless my ohm meter lies too.

Oh well - On to tweaking the combo for normal operation - carb acts pretty jumpy. Will post seperately about this problem.
 
Yup,the orange ign box is crap.

I had the chance to swap out my FBO box and run my friends orange box.Was glad to put the FBO unit back in.Was like night and day!

Even for my fbo unit I run a separate ground straight to the negative battery terminal.
 
Update - my buddy swapped out the orange box for a generic parts store unit on his monaco. His car started immediately. His new mopar orange box was bad. Unbelievable, how can they sell those things and expect no complaints.
 
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