I have been fighting this issue for a little bit now. If I run the car for more then 15 min I start to get a stumble and she feels like she is missing a cylinder. If I reset the computer for 5 min, i get another 15 min of good running and we are back to the same issue after 15 min. Happens hot or cold.
some stats on the car.
89 chrysler lebaron 2.5 l 4 cylinder.
a413 3 speed
I have changed the following:
plugs twice. 1 set were autolites and when I pulled them last night they were sooty and black. (running rich)
new set of wires
new cap
new rotor
o2 sensor is denso unit and seems to work fine
map sensor was changed last year
coolant sensor reads 13,000 ohms at cold so I dont think it is that
tps fine.
ground straps tested ok last night .
I am totally at a loss. I get no codes from the computer so this is making this really hard to troubleshoot.
Could the computer be the problem? I know it was replaced by the previous mechanic to me it seems like an air/fuel issue and it seems like it gets too much fuel. I have had it in my driveway with cardboard under the tail pipe and I get black soot when it stumbles...
some stats on the car.
89 chrysler lebaron 2.5 l 4 cylinder.
a413 3 speed
I have changed the following:
plugs twice. 1 set were autolites and when I pulled them last night they were sooty and black. (running rich)
new set of wires
new cap
new rotor
o2 sensor is denso unit and seems to work fine
map sensor was changed last year
coolant sensor reads 13,000 ohms at cold so I dont think it is that
tps fine.
ground straps tested ok last night .
I am totally at a loss. I get no codes from the computer so this is making this really hard to troubleshoot.
Could the computer be the problem? I know it was replaced by the previous mechanic to me it seems like an air/fuel issue and it seems like it gets too much fuel. I have had it in my driveway with cardboard under the tail pipe and I get black soot when it stumbles...