jcb

what all does the ecm control?1992 d350 5 speed

MBolivar

The PCM controls the alternator charging, the A/C cycling, the OD shifting and the speedometer to name a few.

jcb

If I add a external voltage regulator will that kill the power to the ecm?Is it likely that just the voltage regulator is out and the rest is ok? thanks everybody

wannadiesel

You said the A/C compressor isn't engaging, so you'll have wire that up as well.

The PCM gets power from a different wire. As long as the bulb check happens when you turn the key on (WIF and WTS lights come on for a few seconds) the PCM is marinally operational.

Katmandu

Where is the Crank sensor located on a 98 12 Valver ?

Anyone have pics ??

wannadiesel

Stand in front of the truck directly in front of the fan and look down. The sensor is a little to the left of centerline on top of the crank damper.