mrmustang Posted 8 hours ago Author Share Posted 8 hours ago (edited) 57 minutes ago, MV8 said: If you saying the pump runs as soon as the battery is connected but with the key off, then it sounds like the CAT sourced T2 is configured for pump control but is miswired for power to the ecu or the pump. If the T2 had power all the time I expect you would not be able to shut it off with the key (ignition stays on as well). I'd pull the pump relay and see if the pump still runs and do the same with just the fuse pulled. If it stops, trace from the relay to power and ground on the relay control terminals. The fuse socket should not be shorted to more than one terminal of the relay socket. Maybe I misspoke, the pump cycles when the power (IE: cut off) is turned on, but kicks off 5-10 seconds later, car turns off normally with the regular key. Pump does not continuously run. I'll start with the basics you laid out hopefully next week, once all the parts have arrived (tuesday/wednesday time frame)..Until then the car remains stagnant, unless I get motivated to do the oil and oil filter before then. Bill Edited 8 hours ago by mrmustang 1 Link to comment Share on other sites More sharing options...
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