DM914
New member
Having some fluctuating idle issues with my '96 Barchetta - I've replaced the ICV ( stepper motor ) the solenoid on the side of the throttle control plate, changed injectors, changed coils, checked for vacuum leaks all in an effort to fix the issue.
Car starts and runs fine when cold as soon as I drive idle increases to about 2,000 rpm and then fluctuated down to about 1,000 then up again surging. whine's doing this if I unplug and replug the ICV electrical connector the idle smooths out and it will run fine until I turn off car and restart - when I unplug the connector I get the injector dash warning light... but the car runs just fine.
My question is what sensor or circuit controls the ICV - I'm assuming it does;t operate all the time it's only when the car is warm or cold that the little steer motor is running...
I have replaced the Lamda sensor ( about 2000 km ago ) - also changed out the fuel pump and fuel filter
The car only has 49,000 KM so things shouldn't be worn out... it's getting frustrating. I heard of people hooking up computer to the car to read operation the ODB1 really doesn't give you ton of information unless I'm not supposed to be hooking up under the dash and maybe somewhere int he engine compartment -
Any suggestions or help would be appreciated...
Car starts and runs fine when cold as soon as I drive idle increases to about 2,000 rpm and then fluctuated down to about 1,000 then up again surging. whine's doing this if I unplug and replug the ICV electrical connector the idle smooths out and it will run fine until I turn off car and restart - when I unplug the connector I get the injector dash warning light... but the car runs just fine.
My question is what sensor or circuit controls the ICV - I'm assuming it does;t operate all the time it's only when the car is warm or cold that the little steer motor is running...
I have replaced the Lamda sensor ( about 2000 km ago ) - also changed out the fuel pump and fuel filter
The car only has 49,000 KM so things shouldn't be worn out... it's getting frustrating. I heard of people hooking up computer to the car to read operation the ODB1 really doesn't give you ton of information unless I'm not supposed to be hooking up under the dash and maybe somewhere int he engine compartment -
Any suggestions or help would be appreciated...