help, my 1988 4x4 22re stumbles then dies after warm up.
it acted like fuel problem, so i changed pump and filter. no
change. however ignition lights would come on while running.
so far i have changed distribtor cap rotor wires pickup coil
tps, coil and coil ignitor. could my problem bee in the ignition
wiring harness at the switch. truck starts & idles fine,but when i acelerated stumbles dies & ignition lights come on while motor is still running.

Is there anything else i can check or replace?

 

be more specific about engine lights. So like, charge, check engine, etc.? basically when an engine stumbles and dies you're either not getting enough fuel, spark, or sometimes you get too much fuel and it floods out.

oh yes and is it throwing a code? I'd almost say replace O2 sensor at this point.

 

have replaced o2 sensor. all lights come on as if you turned ignition off.
code shows distributor.

 

check wires plugging in to distributor, all tight, dist. tight?

 

If you are able start it up and it idles fine, I don't suspect spark to be an issue. Since it dies when you accelerate, it sounds more like it isn't getting enough air down the intake. Have you checked the simpler things like the air filter or the AFM? How about your exhaust? Any chance your catalytic converter or muffler is clogged?

 

oh yes and btw I would check timing as well.