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so hello everyone first time posting last Thursday washed my truck driving home it dropped rpms then picked them back up did that 3 times then died hasn't started since checked all Fuzes and relays inside the truck all good don't have a way to check the relays under the hood. replaced the the cps checked the wire harness under the value covers have fuel Goin to and leaving the fuel bowl got a scanner and my rmps go up when I crank my hpop reads 2000 my ipr reads 14.7 eot reads 40 is there anything else o need to look for any help would be greatly appreciated need some help for guys that know more than I do
As far as fuel related issues go... How much fuel in the tank? More than 1/4? You could see fuel flow at the bowl with no load but not enough to sustain 60 PSI while running. Possible clogged screens in the tank as well.
If this only happens when you wash the truck or it rains I would have the windshield pulled, cleaned and resealed. Known issue for water to drain the A pillar and cause issues when it hits the back of the fuse panel and the GEM on older models.