Having problems with your 1998 Ford Explorer ?
NO GROUND IN 4 OFO2 SENSOR 1998 FORD EXPLORER
\015 I REPLACE THE SPARK PLUGS, WEN I FINISHED I FOUND NO GROUND IN ANI O2 SENSOR\015
I'm pretty sure they are grounded thru the PCM. Did you unplug something in the wiring harness ?
Repair Help & Product Troubleshooting for 1998 Ford Explorer
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