Vacuum Line Observation - 4WD

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Jan 14, 2013 | 04:41 PM

svt2205

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From: Sunapee NH

Vacuum Line Observation - 4WD

Maybe this is just on my truck, but somehow I doubt it. While rotating my tires today, I noticed that the vacuum line for the IWE is rubbing against an additional spot. When I first got my truck, I noticed the line was rubbing against part of the steering knuckle. My fix was to add a small peice of poly tubing over the vacuum line. The point of contact that I noticed today has worn a notch into the tube that is probably half of the tubing wall thickness. Without doing something, it's just a matter of time before the vacuum line will leak and will cause the IWE to engage unexpectantly.

Just passing this along to you guys.

Feb 5, 2013 | 05:16 PM

Toto

Junior User

Joined: Mar 2009

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From: Mississauga

Thanx SVT...I will take look in the spring..my truck is a few years old and the might help prevent a permanent partial engagement as others have had.
My buddy had to replace whole hub...it was clicking away for a while.

Feb 11, 2013 | 07:52 AM

unibody62

Laughing Gas

Joined: May 2002

Posts: 873

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From: Ohio

I have had an issue with my trucks 4WD not disengaging at times. It seems to need a full right or left turn to completely disengage. I don't know if this could possibly be part of the problem, but I will look into it. I think I would try to pad the metal part, rather than the vacuum line.

Quote:

I noticed that the vacuum line for the IWE is rubbing against an additional spot.

What exactly is an IWE. The Ford engineer used this term when disgussing my issue with the tech.

Feb 11, 2013 | 08:21 AM

johnday

Cargo Master

Joined: Oct 2010

Posts: 2,762

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From: barton city mi

Good catch, thanks for the info. Looks like one of those things to do once the ice/snow are gone. Soon, I hope!!

Feb 11, 2013 | 08:38 AM

MisterCMK

Fleet Owner

Joined: Mar 2003

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From: Blue Hill Township

Are you sure that is a vacuum line? It looks like the wheel speed sensor to me.

Feb 11, 2013 | 09:37 AM

Tinstar36

Senior User

Joined: Jan 2013

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Good info to have thanks

Feb 11, 2013 | 09:54 AM

fordman19762003

Cargo Master

Joined: Jul 2003

Posts: 3,358

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Quote:

Originally Posted by MisterCMK

Are you sure that is a vacuum line? It looks like the wheel speed sensor to me.

that's what I was thinking. I believe the vacuum line is the double line above and behind the one highlighted. I'll have to look at my wifes truck closer tonight.