I was leery before this happened
Washed engine running rough
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Freshman User
Joined: May 2008
Posts: 40
Likes: 0
From: Wapakoneta, OH
Washed engine running rough
I washed my engine compartment this evening with degreaser and a garden hose. I let it sit for a few hours to dry then started it. It ran fine for about 10 secs then it started running progressively rougher and rougher. I started it again and it did the same thing. Awhile later I started it again and it was fine for a few minutes then it started running rough again. I covered up the intake when I washed it. Should I just let it sit and dry out for awhile? I pulled the codes and a CPS (p0340) and system voltage low (0562) code came up. I cleared them and they didn't come back the second time I pulled the codes after I started it again. Also i got the codes p1210 and p1211, but i'm guessing these are from my DP tuner. Anyone have ideas or suggestions
Posting Guru
Joined: Jan 2009
Posts: 1,321
Likes: 0
From: Mattawa Washington.
Was the engine hot when you washed it? It can cause problems using cold water on a hot motor. Might try driving it around warming everthing up and with the air movement and heat should dry things out..
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Freshman User
Joined: May 2008
Posts: 40
Likes: 0
From: Wapakoneta, OH
The truck had been run for about 15min (just idling) about an hour before I washed it. It was warm but not hot. I'm gonna set a cattle fan in front of it today to try and dry things out. Hopefully it will fix things.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Take the CPS connector off and make sure it's dry inside. Maybe put some di-electric grease around the o-ring before you plug it back in. Did you reach your hand down in the valley to scrub anything, of just let the degreaser do it's job? If you reached down there, make sure you didn't pull something loose.
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Thats what I would do. Start taking all the connection off and spray them with lectric-clean. Could be the connection for the valve covers.
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Hotshot
Joined: Nov 2006
Posts: 11,286
Likes: 263
From: North of Greenville
I wouldn't take that approach from this one experience. There are tons of folks here who wash their engine bays with no issues...
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
Very true. The only thing I can add is I don't blast the water. Just low hose pressure and take it easy on spraying down everything.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
I wash mine several times a year -- no problems here. You have a bad connector someplace letting the water in. Could also be wiring I guess, but more than likely you have a connector letting water in. Need to find it, or it might strand you in a heavy rain some day...
Post Fiend
Joined: Sep 2006
Posts: 5,584
Likes: 0
From: Millbrook Alabama
You most likely got water into the connection for the ICP. Been there done that, same results as you. The ICP sensor has a tube that the connectionis in and because of the way it stands up water can easily get down in it. Blow out the sensor connection, fill with dielctric grease, make sure both 9 pin connectors to the vavle covers are tight and seated, and then try to resart.
Thread Starter
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Freshman User
Joined: May 2008
Posts: 40
Likes: 0
From: Wapakoneta, OH
Well I pulled my eletrical connections apart tonight. The ICP sensor looked to be filled with moisture and the valve cover connections also looked to have a little moisture. I'm gonna let them dry out then try to run it again. Hopefully I have found the problem. I pulled my codes again and I got p1210 and p1211, both relate to the ICP so hopefully I have found the problem.