ty random dying problem

whiteTy1214

whiteTy1214

New member
Could use some ideas, ty is stalling or tring to die while driving.
Has died several times in park or in gear at idle, while driving drops off more than 500 rpm.
fuel psi looks good, have set check engine light before. try to flash code just 12. :rant:
I know my ecm has a broken mounting tab, wonder if it looses connection at times.
I ordered a new reman ecm from autozone, hope that might fix my concern.
Any other ideas?
Also i blew out my atr ss header on the passenger side again, had it welded to fix it last time, lasted like 6k miles...
Also noticed quite a bit of vibration in park reving it up over 2500 rpm... I have solid motor mounts but i think the vibration is excessive. feel it while driving highway and freeway speeds. neutral test during vibration speeds it is gone, only in gear or reving in park.
so dont think it is drivetrain. thanks for any help. have a good one guys. thanks for looking!:tup:
 
whiteTy1214

whiteTy1214

New member
Re: ty random dying problem

anymore ideas fellas? I have bought a ton of parts for this truck,
I always feels so bi-polar! bad map sesnor maybe.. have not changed that yet
 
powercat6

powercat6

Active member
Re: ty random dying problem

whiteTy1214 said:
anymore ideas fellas? I have bought a ton of parts for this truck,
I always feels so bi-polar! bad map sesnor maybe.. have not changed that yet
Click to expand...

What's the tune situation on your truck?

I.E. are you running stock chip or Code 59, Ultimate chip, etc.?

Could be your mods don't fit the tune. You mentioning the MAP sensor brings up the question do you have a 3 Bar chip/tune with a stock 2 Bar MAP installed?
 
whiteTy1214

whiteTy1214

New member
Re: ty random dying problem

running code59 with ALOT of help from wyosyclone. running 63# injectors. 3 bar installed but boost only set at 16psi. I know where my chip adapter on the ecm is missing / broken clip that snaps the chip into place, i have the emulating ribbon installed permently till i can ever get a tune that does good.
I have tried 15bins or more now.
thanks for the input
 
Sydwinder905

Sydwinder905

New member
Re: ty random dying problem

dist. cap, rotor, plugs, plug wires, ignition module. this sounds a lot like an ignition module. does it fire right back up or do you have to wait a while before it will fire? also did you check plug wires for opens or arcing? and last but not least what brand plugs, wires, cap and rotor? believe it or not i have seen some brands of ignition components fail right out of the box or within a few weeks.

Also: get a bucket of water and douse your engine compartment near ignition components with the engine running. get in the truck and brake torque it a few times. if it dies more frequently it is most likely an ignition component.
 
whiteTy1214

whiteTy1214

New member
Re: ty random dying problem

Always fires right back up with no issues, I have checked for arching at night and have seen nothing.
If it was the ignition module, i think it would have a hard time restarting without a wait.
running ngk ur5s gapped at .035, reman autozone dizzy , brass contact cap , new a/c delco coil ,
timing set at zero with wire disconnect, new dampner also , intake gaskets and vacuum lines done etc. fuel psi set at 48 if i remember right with seimens 63#.
Where are all the grounds i should check since my battery was relocated from last owner..
thanks john
 
Daron

Daron

Active member
Sometimes when my ignition module is dyeing it cuts out for 3 seconds or so then runs again. Sometimes it takes a restart to get it going again.


Daron
 
whiteTy1214

whiteTy1214

New member
Re: ty random dying problem

update: Installed reman ecm from autozone. Price matched car quest for $79.80 plus $41 core cause i wanted to keep just incase. Pulled ecm fuses and disconnected battery. Transfered chip adapter/ prom
and ostrich cable. Started right up.Will drive around for awhile and see if anymore dying problems, or cutting out while driving. Note the ecm was a 7749 to match my old one. Hopefully this helps since my last ecm had broken mounting clip to install chip.
 
P

ppress79

Member
Re: ty random dying problem

whiteTy1214 said:
update: Installed reman ecm from autozone. Price matched car quest for $79.80 plus $41 core cause i wanted to keep just incase. Pulled ecm fuses and disconnected battery. Transfered chip adapter/ prom
and ostrich cable. Started right up.Will drive around for awhile and see if anymore dying problems, or cutting out while driving. Note the ecm was a 7749 to match my old one. Hopefully this helps since my last ecm had broken mounting clip to install chip.
Click to expand...

whats the verdict? mine does this too.

Phil
 
whiteTy1214

whiteTy1214

New member
Re: ty random dying problem

Daily driving all week, ecm works great. I have not died or had it cut out on me yet.
Only change I have made since then is the ecm. I will repost if I have a change.
Keep my fingers crossed. later john
 
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