Grinding in 2wd
I have replaced check valve selenoid for use replaced front wheel bearing noise is intermittent goes away if you switch to 4wd I am lost help needed
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So the IWE system works on vacuum as you know and if anything is leaking in the system or damaged you would have an issue. The way I found the issue with my old truck is I bought a hand vacuum pump and tested different areas of the system to figure out what was leaking. I found one of my hubs wouldn't hold vacuum (leaking) and had to replace the hub. If you have a hole in a vacuum line, the same failure would occur. Essentially, see if you can find where the vacuum leak is, and if there isn't any leak, check the vacuum source.
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Have you tried the check valve?
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It won't hurt a bit to disable the entire vacuum/IWE system it really does nothing at all for you. Ford disables it if you have a problem with the system.
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Replaced the check valve and bypassed vacuum so only pulling on the iwes no noise just don’t have 4wd which kinda stinks
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This on a 2020 f150 should have said that before
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Originally Posted by Dynedog
(Post 7591685)
Replaced the check valve and bypassed vacuum so only pulling on the iwes no noise just don’t have 4wd which kinda stinks
As I said above, the IWEs really serve no purpose other than to complicate things. |
Originally Posted by FordGate
(Post 7591690)
As I said above, the IWEs really serve no purpose other than to complicate things.
I've seen lots of posts about how it won't hurt the mileage much :unsure: and I know that the upper trim levels come with the optional TOD transfer case with the 4A setting, but if I don't have to drive all those parts (that are mostly wear items) and rotating mass full time, I'm a lot happier. |
Originally Posted by icantdrive55
(Post 7591739)
Well now, that's just a wee bit of over-simplification. The IWEs--when operating properly--disconnect the front axle(s) from the rotating wheel hub, so you're not driving the front driveline parts (axles, bearings, ring/pinion gears, front driveshaft and CV joints).
I've seen lots of posts about how it won't hurt the mileage much :unsure: and I know that the upper trim levels come with the optional TOD transfer case with the 4A setting, but if I don't have to drive all those parts (that are mostly wear items) and rotating mass full time, I'm a lot happier. Also realize there is no clutch and no synchronizers in the IWE. This means every time it engages you get wear on the gears. This is every time you drive since it starts engaged and disengages after you start driving (if in 2WD). And again, Ford disables the system frequently when there are issues with it. The official Ford fix is to disable the system. It isn't needed and provides nothing positive to the truck. |
Disabling iwe
What is the way ford wants these disabled since I have no 4 A just 4wd and 2wd on my switch
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