1985 duke dieing issue, on and on it goes ! (Page 1/4)
Lou6t4gto JUL 13, 08:41 PM
1985 2.5/auto .engine is low mile (Mechanically sound), but lately it has a habit of stalling for no known reason. usually at a light, But did it Once going down the road at 30MPH. Has always started right up again. NEW fuel pump, lines, filter, injector, regulator, Pickup coil, IAC, ICM, (within the last 500 miles !) the Stumble before totally quiting leads me to believe a fuel issue, but everything is NEW. Thinking of installing a fuel Pressure gauge IN the Dash so I can SEE what happens when it stumbles. Volts do not drop, tach does nothing wierd. I've tried jiggling the key switch when it started stumbling,... NOTHING. I dis connected & re-connected all electrical connections.
then after it re started, I get on my way, and if I push on the accelerator, does NOTHING ! doesn't quit, but won't speed up either ! TPS is Also NEW. tried switching the AC and fuel pump Relays also.
maybe a coinsidense, but the AC (that will usually Freeze me out ) every now and then blows WARM, 2 min later it blows Ice Cold !!??
running out of "what can it be's. Help! Thanks
cebix JUL 14, 04:29 AM
TCC locked up? Common issue with the symptoms you're describing.
Tempus_Fugit JUL 14, 07:38 AM

quote
Originally posted by cebix:

TCC locked up? Common issue with the symptoms you're describing.



I like this theory, disconnect electrical connector at trans to test?

Lou6t4gto JUL 14, 01:21 PM
I'll TRY anything at this point. I installed a new lock up solenoid about 3 years ago.
AsaBergman JUL 14, 03:57 PM
First thing to try is disconnect the torque converter clutch wire on the transmission and see if the issue continues. As someone else said this is a very common issue.

If you have a spare engine computer you should try swapping it. For stupid reasons I happen to have an 85 2.5 auto engine computer that I know works I could send you for cost of shipping from PA.
viperine JUL 14, 04:50 PM
Been in this situation with a 2.8, turned out to be a clogged cat. 60k miles on this one. I suggested this to another thread on a super low mile car and it happened to be the cat being clogged even there. Was under 10k miles, IIRC.

Take out the oxygen sensor and see if the problem goes away.
Lou6t4gto JUL 14, 05:16 PM
disconnected the lock up. took it for an 8 mile ride, Perfect !....................NOPE, 1/2 hour later went to use it and I didn't even get out of my driveway ! Has NO Cat on it ! how long will it run with the O2 disconnected ??? (am I going to get stuck 2 miles down the road ?) or will it just run rich and throw a code?
Lou6t4gto JUL 14, 05:17 PM
making me crazy, the "entire car" is like new, and yet I'm afraid to use it !
Lou6t4gto JUL 14, 05:21 PM
PM Sent. thanks
Lou6t4gto JUL 15, 04:30 PM
I disconnected the O2 sensor, made Not alot of difference except putting the ses light on and a 13 code. disconnected and plugged EGR, no difference, checked wires in console (No mouse chews), r&r all the plugs to make sure they are "Seated". still Sputters for 1 second then quits, will start right up again though. did it 4 times just in the driveway !, then ran fine for about 2 miles before doing it again.