I pulled pump. Applied 12 volts. The pump didn't run. Picked up new one. Tried tested it before I put it in. Worked fine. Dosent work in the truck. Applied 12 volts to grey wire and it worked. Took voltage reading at harnes. With key on. Got 3 to 5 volts for a few seconds. Then tried cranking it over. Got the same voltage reading only it was constant. Checked all the fuses under the hood and in the cab. All good. Switched relay with another of the same number. Made no differents.
Any ideas would be greatly appreciated.
Monday, March 31st, 2008 AT 2:37 PM