Concerns about pressure washing the engine bay - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-24-2007, 10:47 PM   #1
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Default Concerns about pressure washing the engine bay

I have never had a problem covering up the alternator and coils on my other cars but I noticed the 00 has a fuse panel/fuseable link panel of some sort where the battery should have been. Is it pretty water proof? any other precautions that need to be made before I pressure wash the **** out of the 00?
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Old 01-24-2007, 11:27 PM   #2
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go to town
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Old 01-24-2007, 11:36 PM   #3
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Oh hans, and haro...love the new siggy'*! Totally off subject....dont shoot me lol
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Old 01-24-2007, 11:42 PM   #4
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No worries. That thing is pretty much water proof.
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Old 01-24-2007, 11:48 PM   #5
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Cover the alt and abs module with plastic shopping bags, kinda stay away from direct spray around the TB and maf.
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Old 01-25-2007, 12:29 AM   #6
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just wash it dont worry about anything. the only thing i have ever seen screw up was a horn somehow came on and stayed on till things dried (unpluged till then)
and thats at work where they do 15-20 cars a day minimum
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Old 01-25-2007, 09:04 AM   #7
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I've never had a problem after pressure washing my engine bays in either my '99 SE, or in my Jeep wich has seen more water than anyone'* bonneville on here.
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Old 01-25-2007, 09:07 AM   #8
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While I haven't pressure washed yet.. I use cleaner and the regular hose...

Which.. summertime pressures are around 60-80psi.. Nothing gets covered. Remember..in the rain..water gets everywhere under your hood
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Old 01-25-2007, 09:46 AM   #9
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Exactly why I stopped covering stuff when I wash my engine, first couple of times I did it to my Bonneville I was nervous as a squirrel on crack and would cover the Alt, Baterry, Coils. Then I realized how wet my Jeep'* engine gets when I go through water.
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Old 01-25-2007, 09:50 AM   #10
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I leave the engine running when pressure washing it, and don't cover anything. However, I don't aim directly for the alternator, or any other major electrical components.

And, before I take the pressure washer to it, I coat everything with Simple Green Engine Degreaser. Then, pressure wash it after the Simple Green has sat for a couple minutes. You'll be very impressed with the results.
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