1989 Ford Festiva • 4 cylinder 2WD Automatic • 150,000 miles

Back to my 1989 festiva; how do I check the computer injector/s ground driver circuit- as advized and could the Computer causing it not to run, I have done the following-
checked fuel system --getting fuel to the intake inlet port. Checked spark-its getting spark to the plugs, If I spray starting fluid into the throtle body engin runs for a short time but slow and sputtering
Pluged a noid light into an injector plug --no signal
Used a test light from battery ground to both termnals in the injector plug no sighn of power.
John Fella
July 14, 2011.

One of the injector should have power when key is turn On-could be a fuse, cam and crankshaft position sensor input signal that the computer uses to synchronize the injector, or the injector ground drivers

Oct 9, 2011.