Just got in the shop is still there mostly. Like Keith said weird *** problem. Could be the ecu just weird.
Stop in for a cup of coffee
- Thread starter toolmanmike
- Start date
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I checked them all, still no idea but a spare ecu is not a bad idea to have in the trunk.
Well you would know.
Besides I'm far from grounded.
Hey maybe that's my problem.
NAAAAA.
zkx14
Duster De-ruster
Inner fender needs a good ground too.
All grounds were good to the firewall, more I think about it the ecu is probably the issue. Just a strange one because it really is intermittent.
Fender to battery negative/rad support. Can never be grounded too much.
Ddaddy
Just doing what I do
I’ve had it happen before with the ECU, one minute fine...the next no start or rough running...then fine again.
When they get wonky like that it’s mostly related to temperature. Did you guys move the car indoors and warm it up?
No stayed outside, probably it it did warm up from 30's to 40's, makes sense that's what I would do threw every other part at it though.
zkx14
Duster De-ruster
Well, it's welded in. Connected to radiator support. Battery ground goes to both block and radiator support..
I originally did not have good ground and no start when I put that ecu in new after painting the bay. I had removed a little paint and it fired right up. 5 minutes ago I added a star washer under one side of it to give a little extra bite. So at this point I am confident that there is N.F.Way that it ain't grounded.
Here is where it is strange distrib out turn it and good spark when on and also cranking, put it back in no good. Just made no sense did it numerous times. I was thinking during a load cranking but same good spark just when either was in no spark. Should not need a dist ground with a pickup but grounded it out also no change. Just a weird one. Got it just no idea of the cause told keefer to drive it close to home for a while (within free towing area) and see if it does it again if it does then I would prob throw a ecu at it.
zkx14
Duster De-ruster
Nope. I will get a spare ECU sometime soon, but with all the testing between yesterday and today I am quite confident it is good today. No bets on tomorrow. LOL
I checked it also it was perfect to the firewall ground strap on the other side.
zkx14
Duster De-ruster
Started a few more times and Took it down the road again after you left. Zero problems.
Keith that the original ecu?
Bad wire. Between pickup and ecu....resistance test on the 2 ecu terminals and pull,twist the wires.
Thats kind of what I was thinking all day and I did not have a load light with me ohmed out ok.
zkx14
Duster De-ruster
No. Replaced after I rebuilt the engine. So, about 4 years, but not many miles. And the back looks perfect too. Not rusted or cooked out.
Seriously a strange one did the bend the wires as far as we could still worked ok, would not doubt there is a area with just a few strands hanging on would love to have a TDR to check them.
Keith you need to buy one of these!
Klein Tools Time Domain Reflectometer: +/- 1% Accuracy, LCD, 3000 ft Measurement Range, Test & Measure Cable, Plastic - Gamut
Klein Tools Time Domain Reflectometer: +/- 1% Accuracy, LCD, 3000 ft Measurement Range, Test & Measure Cable, Plastic - Gamut
zkx14
Duster De-ruster
If it happens again I will use wire tap connectors by the distributer and run bypass wires to the ecu without disturbing anything else.
zkx14
Duster De-ruster
OK, Let me go order that quick. LOLKeith you need to buy one of these!
Klein Tools Time Domain Reflectometer: +/- 1% Accuracy, LCD, 3000 ft Measurement Range, Test & Measure Cable, Plastic - Gamut
I would do it right and change the wires that would look like *** in there and we are still not sure what the issue is.
They tell it all!
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