I have a 1997 peterbilt semi with the detriot engine. When I drive down the road the coolant and engine light comes on truck will bogg down like trying to stall and than it picks back up and keeps going. Have already replaced ECM and checked wiring harnesses? Any suggestions what could be causing this?1997 peterbilt 379 issues?
if the lights are on its throwing a code that's the easiest place to start hook it up to a computer1997 peterbilt 379 issues?
Bleed the system.
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