brian529 Posted May 24, 2010 Share Posted May 24, 2010 2002 CH613 350/385. Hoping someone has seen this problem before. Out of no where the truck will hiccup. No throttle response at all. When this happens the Electrical Malfunction Light and the ABS come on. Brought the truck to Mack, they pulled the codes and came up with a bad EUP. This was replaced and and off I went. On the way home it briefly hiccuped for a split second and then was fine for about 500 miles or so. It did it again and I cleaned the connections on the positive and neg blocks on the firewall and it was again good for about 1500 miles. Friday it did again no throttle response, Elec Mal Fun and ABS light on and also would not shut off (1 time). When this happens the idle stays aroud 600 sometimes rising to 800. After about ten minutes and starting and shutting the truck off 2-3 times it magically was fine. I made it the 212 miles home without a hitch. This is the third time this happened. Can't afford to be stranded. The truck is back at Mack today. Any help would be appreciated. Thanks. Quote Maxx613 Link to comment Share on other sites More sharing options...
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