Low voltage at injectors, ECU ground?

kensington1 · Post by **kensington1** » 20 May 2021, 20:59

Hi there.

My 87 244DL is having trouble idling smoothly. I checked the injector voltage by backprobing them, and was only seeing 0.5-2.0 volts across the terminals. Unplugging them during idle seems to have no effect either.

I've even tried backprobing PIN 13 on the ECU, and I have similar readings. This is the 2nd ECU I've tried. I'm stumped! Any ideas?

kensington1 · Post by **kensington1** » 20 May 2021, 22:00

Forgot to mention, the positive pin at the injectors has 12 volts.