Mystery Wire

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Jun 17, 2017 | 05:29 PM

kaysystems

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Mystery Wire

On my 2000 F53 motorhome chases I found a wire resting on the rear of the engine.

I attach two photos. One showing the general location and a view of the end of the wire.

Can anyone tell me what it is and where it goes?

thanks

David

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Jun 18, 2017 | 09:40 AM

krewat

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Is that a wire or a vacuum hose?

Jun 18, 2017 | 10:36 AM

kaysystems

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Quote:

Originally Posted by Krewat

Is that a wire or a vacuum hose?

Well, I assumed it was a wire because it is red. But now that I'm back from vacation and it finally stopped raining, I can investigate. It looks like a plugged vacuum that goes to F4UE-9E453-CA (vacuum canister?). There is also a white and a black vacuum going to the canister - the black one's connector at the canister is perished, so I need to fix that as well now. Just need to measure the size. I guess that if the red one is plugged, I don't need it?

After I removed the RV from storage it feels like it misfires. I checked the wiring for mice teeth marks, but nothing. I am looking at the plug boots next, but then I noticed this thing on the rear of the engine.
I'm going to clean the MAF sensor too, because the F53 has the air intake behind the grill and when it rains the air filter gets very soggy.

David

Jun 18, 2017 | 10:56 AM

krewat

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Look under the hood for the vacuum diagram - that'll tell you what's what.

Given the vacuum leak caused by "perished" connector at the canister, I'd fix all that first before you go nuts with other things.

The spark plug boots like to pull water and dirt down into the spark plug hole. Did you ever change the plugs before?

Jun 18, 2017 | 10:59 AM

krewat

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And you know, there was a TSB out for the F53 air intake because it would allow water in when it rains. I'll see if I can find it.

Jun 18, 2017 | 11:06 AM

krewat

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TSB 04-24-22 - but the parts are no longer available. Do a google search for "TSB 04-24-22" and you'll get some rv.net and other links where you can look into what you can do. I would imagine some imaginative engineering would work

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Jun 18, 2017 | 02:32 PM

kaysystems

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Thanks
I found the TSB, but of course parts are not available from Ford.
I bought the RV a couple years ago, and at 66000 miles I'm sure the plugs are original. I'll change them when I look at the boots.
Off to the store tomorrow to buy some vacuum tubing.

Thanks for your help. I can always trust this forum mohave answers

David