Author Topic: 1973 CJ6  (Read 92119 times)

rejeep

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Re: 1973 CJ6
« Reply #810 on: August 25, 2016, 10:23:34 AM »
put a fuel gage on the hood, that would have been my first action lol

even a cheap HF one with flex hose and zip ties

Howell still blaming ICU or 10% chance GM box

assuming I had a gauge...
what would it show me I don't already know?   (devils advocate here)
when the engine dies it doesn't have fuel... I loose tach signal so the Howell doesn't sent fuel
when I turn Jeep back on I hear the FP pulse (not initiated by tach signal)   

Troy (@Howell) told me how to check for fuel pulse when I get a shut down..
he even admitted it will be tough to do..  have to disconnect white wire from tach and tap with test light to + battery terminal to replicate distributor action..

I have a NOS Mopar box.. might throw that on tonight if for no other reason shits and giggles..  with an independent ground?
I want to re route my howell "white wire" to a better place where it might not get interference from heat or RF..

hate to try this.. but smike, you guys have any OE duraspark boxes from parts Jeeps?  might try and oldie but a goodie..





I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

M4wdFab

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Re: 1973 CJ6
« Reply #811 on: August 25, 2016, 10:24:55 AM »
hardwire the pump to an aux switch


eliminate fuel question with switch and gage.

rejeep

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Re: 1973 CJ6
« Reply #812 on: August 25, 2016, 10:32:26 AM »
can we work down both paths here..

if I'm loosing fuel its locking somewhere or vent issue (already vented) or like you said many times, gas cap off while driving

if I'm loosing ignition or signal the 12psi would remain constant and there would be a problem with one of the boxes..

I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

Wingman

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Re: 1973 CJ6
« Reply #813 on: August 25, 2016, 10:47:44 AM »
Does the tach go dead? Running off the same wire, no?
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rejeep

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Re: 1973 CJ6
« Reply #814 on: August 25, 2016, 11:48:57 AM »
I did and sometimes do get a tach bounce..  Howell said that could be a function of some RF interference and doesn't always indicate something wrong.
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

rejeep

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Re: 1973 CJ6
« Reply #815 on: August 27, 2016, 03:06:42 PM »
WWSD
(what would smike do)

driving today and had a thought..
is the Charcoal canister (gas tank vent) getting vacuum?

tank has been less than half full since last shut down, without me changing anything
un confirmed, but if shut downs occur after fill ups, or when more than half full...  all boils back down to improper vent...

Need to read some more on the CTO valve and operation.  would also explain periods of high temps if EGR valve not kicking in..
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

mr.mindless

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Re: 1973 CJ6
« Reply #816 on: August 27, 2016, 06:32:38 PM »
what's EGR?
loose/missing tank cap not yet tested?
if it is improper venting, I expect that you'd see fuel pressure slowly drop until the stumble/stall.
Quote from: etk300ex
oh lord!

rejeep

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Re: 1973 CJ6
« Reply #817 on: August 27, 2016, 10:13:42 PM »
Exhaust gas recirculating ...  Purge on cansiter is t'd into it..

I'm not going to change much around and fill up tomorrow...
See where it goes from there...

Put manifold vacuum to the canister today and runs like it has a vac leak
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

rejeep

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Re: 1973 CJ6
« Reply #818 on: August 28, 2016, 09:13:44 PM »
Confirmed CTO valve function with ported vacuum @ temp.
Filled up, gona run it tomorrow.
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

rejeep

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Re: 1973 CJ6
« Reply #819 on: August 29, 2016, 11:32:17 AM »
Might have finally had a complete failure!!!

Engine warm:
At stop light dies..  Immediate restart
Dies a little bit down the road, hard restart
Drives rough, no restart in parking lot of valley club.

Going to work out and then revaluate

I'm kinda hoping it stays dead....
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

Wingman

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Re: 1973 CJ6
« Reply #820 on: August 29, 2016, 11:38:41 AM »
I'm kinda hoping it stays dead....

Don't hear that very often  :P
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M4wdFab

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Re: 1973 CJ6
« Reply #821 on: August 29, 2016, 11:43:14 AM »
OBDII is not looking so bad.....

mr.mindless

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Re: 1973 CJ6
« Reply #822 on: August 29, 2016, 12:20:51 PM »
Have you ever pulled the fuel cap immediately in these cases to see if that clears things up?

Certainly seems full tank related


Tapatalking in traffic
Quote from: etk300ex
oh lord!

rejeep

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Re: 1973 CJ6
« Reply #823 on: August 29, 2016, 02:58:08 PM »
I'm kinda hoping it stays dead....

Don't hear that very often  :P

I needed it to die so I would stop chasing ghosts..


Worked out for 45 min.. went out to lot again, tried to start.. nothing.
had lunch, went outside again, status quo..
got a ride back to office, grabbed a module off the shelf and took MJ back to rescue CJ

CJ fired on first crank with new module, loosely grounded..
took MJ home, grabbed tools, got a ride back to CJ and all of 5 min later Job was done...

back at office with a fine running CJ.. MJ to Scotty's for a sticker it needed anyway..

chasing this thing for 3 months, possibly longer..
I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o

rejeep

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Re: 1973 CJ6
« Reply #824 on: September 12, 2016, 12:57:13 PM »
with a functioning Jeep I focused some attention on the hardtop..

Started playing around with the cowl gasket this weekend and took it down with a belt sander..
I was able to get a better rake on the windshield, but might have lost some sealing ability.
I'm going to have to do a fresh seal with a scalpel and not a butcher knife..
top calls for 70 3/4" measurement for an intermediate CJ5.. I went ahead and figured 90 3/4" for a CJ6

there is still some play in the windshield to move forward or backward, so I think ill be ok here..
Doors seemed to fit ok (angle at windshield) .. hard to tell again until the top is on.





I never wanted a red car.. always thought they were tacky and common...
I now have 4 very not common cars and they are all red.. :o