I'm working on a freinds 95 auto. The complaints are low power, and makes a pinging noise when hot.
The overflow valve was bad and throttle linkage was messed up. I replaced the overflow valve and repaired the throttle linkage. It now has power but still pings when hot.
From the short amount I've driven the truck I think the PO installed a shift kit. Also the anti-tampering string on the injection pump isn't there. I don't know the P7100 to know what all can be played with or how to check for tampering.
What could cause it to ping?
The overflow valve was bad and throttle linkage was messed up. I replaced the overflow valve and repaired the throttle linkage. It now has power but still pings when hot.
From the short amount I've driven the truck I think the PO installed a shift kit. Also the anti-tampering string on the injection pump isn't there. I don't know the P7100 to know what all can be played with or how to check for tampering.
What could cause it to ping?