This is topic missfire in forum Tech Talk at Northern California Ford Owners .
To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=027117
Posted by Os50s (Member # 10500) on
:
wassup guys so i have a bone stock 91 5.0 H.O. motor and im getting a missfire only when its warmed up cold it runs good and its intermittent plugs are new autolites double plat. new ford racing wires, accel cap and rotor, new mass air stock, egr valve is good took it off and cleaned it then put vaccum to it works fine. i replaced one O2 sensor a year ago needed it to pass smog wondering if the other one is bad would it cause a miss like this. i do have a aftermarket temp. gauge so the original sensor is not on and i got a code for ect sensor out of range, it didnt miss when i first took it off about 3 months ago.
would fuel pressure do this. i have new fuel filter and 255 in tank pump
would a ignition module cause this. the one on the distributor
any help i would really appreciate sucks being stuck like this
Posted by Adam5.0 (Member # 6995) on
:
If you took out the sensor for the ecu, its a very important part for the car to run right. Did you take out he sensor on the lower manifold or on the heater tube?
Posted by WILDMAN97 (Member # 9138) on
:
Alot of people have had issues when running platnum plugs. Mine had a miss swapped back to cheap autolite copper plugs and the miss was gone.
Fueled by Ford Mustang Owners
on CaliforniaFords.com