Broken IWE?
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I understand how the system works. I want to know if that black ring should be able to come completely free so that it can be moved around and no longer meshed with anything. When I let off the vacuum, the iwe sprang back and that ring didn’t mesh back in every time. Sometimes it would get stuck and keep the iwe from engaging.
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It turns out that the new aftermarket iwe isn’t broken. After installing the new iwe, hub and cv shaft, I was still hearing a clicking/light grinding noise. I spoke to a mechanic about it and he said there are some aftermarket iwe’s that are junk and he won’t use them because they cause problems and they don’t last.
So, I went to the Ford dealer and bought an iwe and I took the aftermarket iwe off. I had the two of them on my workbench and the Ford iwe took much less effort to compress. I tested both with the vacuum tester and the Ford iwe was fully activated at 5 inHg and the aftermarket took 12 inHg. I installed the Ford iwe and went for a little test drive. All ok. It would seem that the aftermarket iwe took more vacuum than the truck could supply to activate it.
How much vacuum should the truck supply to the iwe’s?
So, I went to the Ford dealer and bought an iwe and I took the aftermarket iwe off. I had the two of them on my workbench and the Ford iwe took much less effort to compress. I tested both with the vacuum tester and the Ford iwe was fully activated at 5 inHg and the aftermarket took 12 inHg. I installed the Ford iwe and went for a little test drive. All ok. It would seem that the aftermarket iwe took more vacuum than the truck could supply to activate it.
How much vacuum should the truck supply to the iwe’s?
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Unfortunately, I had thrown out the box it came in before I realized all of this. I may call the parts place and check so I don't make the same mistake again. I was going to bring it back, but when I checked my receipt, it wasn't on it. They forgot to charge me! haha. Luckily, the Ford dealer gave me a great discount on theirs too.
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when I was troubleshooting mine, I measured between 20 and 25 inches of mercury that the engine was pulling on the hose that I pulled off the IWE at idle. Much less at full throttle for sure though.
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erikkloss
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Jan 20, 2017 04:00 PM