Joined: Jul 2004
Location: Central Florida
How to test injector driver?
I've got a '92 that apparently has one injector not firing. Injectors have been replaced, valvetrain's mechanical has been ruled out.
So next to test is the wiring harness or the computer's #2 injector driver. The engine has a constant miss or stumble, and only one injector, when disconnected, does not impact engine performance at all. Any other injector causes the motor to stumble worse. (Plugs have been changed with no difference in symptoms.) Compression test to come depending on the outcome of the injector signal. I should add this has come about rather suddenly, the car was running fine and this started upon start-up after being parked for three hours.
Any ideas on a procedure to test if the injectors' harness is getting a signal?