While on a run from Greenville to the Atlanta airport about 150 miles my service engine light came on. It didn't come on until after about an hour of running 75 to 80mph. Truck ran great even with the light on. Same thing happened on the return trip. I replaced the EGR solenoid valve about 6 months ago, had a cracked hose fitting. Wondering about an over active egr valve or maybe O2 sensor. I jumpered the test port and got a 34 (EGR). Doesn't do it on normal driving around town. Any thoughts or help is appreciated.
08-04-2003, 09:14 PM
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