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Won't do that again

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Old Jul 1, 2012 | 05:54 AM
  #1  
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Won't do that again

Was doing routine maintenance this weekend:
  • new fuel filters
  • new air filters
  • coolant tests

All of that went very well, and btw, the DCFM bowl was clean, no foreign matter.

Decided to degrease the engine. Thats when things went south. Used a degreaser on cold engine. Let it sit for 15 minutes, then used a low pressure hose with garden sprayer to rinse off. Fired the engine up when completed, and took her for a drive to heat things up to dry quicker. First thing I noticed was A/C was not working well. Took compressor some time to come on. A couple hours later got in the truck to run some errands, and there was a CEL(that wasn't there the first drive a couple hours earlier). Hooked up the code reader, and got a P0113 - IAT sensor high input code. Reset the code, has not come back on yet, but will keep an eye on things. Same with the A/C. Maybe things were just wet, and won't happen again, we'll see....

Engine compartment does look nice, though.
 
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Old Jul 1, 2012 | 06:34 AM
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Good info, been wanting to wash my engine bay. Used to wash the 7.3 a couple times a year with no problems. Maybe we need to use dielectric grease on all the connections like I do on my ATV.
 
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Old Jul 1, 2012 | 07:45 AM
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There are two sides to this one. Generally there are folks that will tell you that washing/rinsing the engine is the worst thing you can do for it. Then folks swear that it needs to be kept showroom clean for maximum life expectancy.

I generally hose down the underside of the hood, wipe with a rag anything dusty on the engine and firewall. Then I hose it down and let it sit overnight. Never had the urge to use a cleaning chemical. I treat it like any other sensitive device, if it gets wet make sure it's completely dry before giving it any power again.

I will say that after two years the only mess under the hood is dust. No oily residue anywhere so cleaning is pretty easy.
 
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Old Jul 1, 2012 | 12:58 PM
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I guess i like showroom clean, but have only typically do it once every few years over all the vehicles I have had. Engine was mostly just dusty too. Just trying to keep her looking like new as much as possible.

I can say that things seem fine now. Also, not sure if the P0113 was caused by unplugging the sensor when changing the air filter or not. Hard to say. Mostly likely not, since everything was shutdown when I was changing it out. As for the A/C I'm thinking the belt was just wet/soapy and could have been slipping a little?
 
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Old Jul 1, 2012 | 01:03 PM
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Well don't get me wrong, I don't blame you one bit for wanting it perfect. I'm just relaying stuff I've read over the years....

I got an engine light from the mass air flow sensor on the intake tube once, it's a little fragile for the reality of where it is and the need for unplugging it to check the air filter. My little clip broke a long time ago so now it gets a zip tie to hold it tight.

I doubt the belt was slipping, that would be pretty tough to do.
 
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Old Jul 1, 2012 | 06:23 PM
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I've used Motorcraft Engine Shampoo and Degreaser (U.S only) (ZC-20) in the past so Ford can't say I used an inferior degreaser.
 
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