So my 94 sc is running very bad at idle and low boost/throttle. It stumbles as if it had a bad wire or a plug.
Immediately when you give it gas and boost rises like from vac 10 to vac 5 it runs fine and from there to wot it runs fine. It doesn't seem to make a difference if the engine is cold or hot. It runs bad immediately from a cold start. Tach is working normally. No check engine light showing on dash. Things we have changed/checked
new:
-Cam sensor
-TPS
-Coolant temp sensor
-Maf cleaned
-Plugs/wires
-Coil pack
-Fuel filter
-Air filter cleaned
-02 sensors
-IAC valve
-no codes
-balancer fine
We drove the car with wideband lamda system throughout the rev/boost range and the a/f ratio kept very good all the time. No signs of lean rich anywhere. Guys at a local mustang shop where the car was for repair said they have no more ideas what to try with it.
Any ideas are appreciated! Sorry my bad english.
Thanks,
Aaro, Finland
Immediately when you give it gas and boost rises like from vac 10 to vac 5 it runs fine and from there to wot it runs fine. It doesn't seem to make a difference if the engine is cold or hot. It runs bad immediately from a cold start. Tach is working normally. No check engine light showing on dash. Things we have changed/checked
new:
-Cam sensor
-TPS
-Coolant temp sensor
-Maf cleaned
-Plugs/wires
-Coil pack
-Fuel filter
-Air filter cleaned
-02 sensors
-IAC valve
-no codes
-balancer fine
We drove the car with wideband lamda system throughout the rev/boost range and the a/f ratio kept very good all the time. No signs of lean rich anywhere. Guys at a local mustang shop where the car was for repair said they have no more ideas what to try with it.
Any ideas are appreciated! Sorry my bad english.
Thanks,
Aaro, Finland