03whitedually

Hey everyone , I washed down my motor yesterday and this morning it's running really rough and building real high exhaust temps. Last night I drove down the street and it was fine though . Any ideas are appreciated

Spooler

You have water in a connector. Check the rail pressure sensor, if water gets into this connector it can toast the sensor and they are not cheap.

cbrahs

had the same thing happen to mine. ran ok the day i washed it, next day, ran like a 12 valve. replaced sensor, added dialectric grease and no issues any longer.

03whitedually

thanks guys I'll check it tonight hopefully a little dielectric grease will fix it up

03whitedually

Well checked all the plugs that go into the fuel area added dielectric grease but still no luck. Is there anything else that I can check before taking it to a mechanic

cbrahs

pull codes. i tried cleaning mine but the rail psi sensor was already shot, had to replace it.

03whitedually

if you mind me asking how much was the part and how hard was it to replace ( DIY project or professional )

White Ghost

you can buy the whole rail from cummins cheaper than the sensor from the dealer.

cbrahs

so true!

Mine was/is still under warranty. 1st time the truck has ever been on a wrecker. kinda hurt my ego a bit! LOL

03whitedually

Well I decided to unplug my Edge box and guess what no more codes and runs great again just alot slower