06 Dodge 1500 V8 4.7L: overheating after 30 min of driving in town, engine light on, pulled P0303, P0305, P0300 codes. Checked radiator (hot) coolant (cold). Black sludge on radiator cap. Recently added coolant but it was a different color (oops?). Also had starting problems previously. It would turn over but shut off after idling rough for 3-5 sec. Inspected all wiring and systems with no determination of cause. I see a FOR SALE sign in the near future :)
Hi
Check for plugged exhaust system. If plugged will cause overheating and misfiring of all cylinders.
Code 300 random misfire code303 cyl 3 misfire code305 cyl 5 misfire, check oil to see if coolant is leaking into oil, oil will look like a chocolate milk shake, also run engine with rad cap off see if you have good flow, hope this helps let me know
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