random stutter / cel that goes on and off

[dilpickle137]

My problem has preatty much been an egg hunt and i have ran out of ideas.
My car will start fine when first cold and after a while it will throw a cel or shutter but the cel never stays on constantly just for as long as it wants.
I have replaced my isc motor and got my leaky capacitors in my ecu replaced and fixed boost leaks all of which made it run better but not fix the problem.
As of right now i am out of ideas my alternator seems to be fine so it shouldnt be a loss of power. Any help would be apreciated.

 

[3kgt2nv]

have you had the codes pulled to see what the issue could be? does it act differently if you unplug the mas? one thing also to check is the coolant temp sensor as the car might not be able to tell when it is warmed up and its dumping crazy fuel causing it to run stupid rich to where its stumbling.

pull a plug and see if its coated in black soot

 

[dilpickle137]

the plugs look fine and i dont have a way of pulling the codes and also another thing my temp sensor gets up to half way and dosnt go past that but the temp my engine puts off in my bay is extreamly hot but im thinking thats just from the turbo

 

[007jimmy]

have you checked you timing. it sounds like you might be off a tooth and your getting pre-detonation or knock.

 

[dilpickle137]

would it be possible to jump a tooth the timeing blt was done at 65xxx an it is a 107xxx now maybe time for a new one but its alot of work to replace if its not the problem

 

[DSM1G90]

Still need to run codes to find out what it is, for your other problems won't bring up a CEL.

You can go to VFAQ and in there explains on how you can pull codes from the OBD plug down by the fusebox.

 

[Jazz]

Had the same thing happen to me few years ago. It was a bad O2 sensor

 

[dilpickle137]

Is there a way to test the o2 on the car?

 

[KewlWinter]

You can drive to AutoZone and they will pull your codes for free. You will stay on your egg hunt until you either get lucky (unlikely) or pull codes and address them.

 

[dilpickle137]

hahaha thats funny you relize i live in montana no auto store here has an obd 1 scan tool for a dsm ive tried them all and the shop that can is booked for a while and i dont have that long.

 

[KewlWinter]

Sorry bout that, I forgot you had a 1G and no ODB2.

Heres a link to different ECU codes and how to read them with a multimeter depending on what diagnostic port you have.

Mitsubishi Trouble Code Info

 

[dilpickle137]

Ya it kinda sucks owning obd 1 here but thanks for the link i will be on the search for a voltmeter and try it but does the ecu store the codes or does the cel have to be on cause it comes and goes?

does anyone know how to test the coolant temp switch and today while at worked i could drive it but once i shut it off it would not stay started because it was bogging from running to rich i belive... i have a multimeter but not a volt meter to pull the codes

 

[dilpickle137]

so the code i got off my car is tdc cas for cylinder 1

 

[TalonJohn94]

So what does that indicate needs to be fixed/replaced?

I have similar issue, accept always rough idle, no boost and CEL.

 

[thomcasey]

Get a timing light and set your base timing. Once that is set, you should see that go away.

 

[dilpickle137]

i havnt touched the timeing since i got the car and it is a recent issue so i bought a new crank angle / camshaft syncronizer and will put that on and time it and let you guys know how it goes

all my problems are now fixed and the parts i replaced or repaired were ecu, isc motor, and the crank angle / camshaft syncronizer. I then adjusted the timing to the mark below the 10 maybe a degree more and it pulls like a dream whipers fly on and all i get are smiles from people who ride in it