Gen II 3.5 Egoboost vac pump

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11-12-2017, 09:18 PM

#101

Blue2016XL

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Quote:

Originally Posted by johnday

LOL, he must have put it on mine!!!

I just went to the link that you gave. Definitely not the same as my 2010. Now I wonder what year that truck was that he took it off of. Maybe it was a 2016.

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11-12-2017, 09:47 PM

#102

johnday in BFE

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Quote:

Originally Posted by blue2010xlt

I just went to the link that you gave. Definitely not the same as my 2010. Now I wonder what year that truck was that he took it off of. Maybe it was a 2016.

That's why I thought you meant the solenoid. My parts guy showed me both the checkvalve for the 12th gen, and the one like on Amazon for my '17. I got the impression the one for mine is used for other applications besides just the IWE switching system.

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11-13-2017, 08:33 AM

#103

s1njin

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This just happened to my truck. They replaced the check valve and a IWE solenoid. 5400 miles on it.

I'm wondering if this is going to be a routine occurrence ...

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11-13-2017, 08:59 AM

#104

johnday in BFE

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Quote:

Originally Posted by s1njin

This just happened to my truck. They replaced the check valve and a IWE solenoid. 5400 miles on it.

I'm wondering if this is going to be a routine occurrence ...

I hope it isn't, but if it happens again you'll know what to do.
They replaced both? Sounds almost like they were going to just throw parts at it until it worked. It's pretty easy to trouble shoot either one. It appears in at least a couple of us, that problem happens when things are cold.
I had less than 500 miles on mine when the problem arose, knew it was a vacuum problem, but didn't think something as simple, and usually trouble free, checkvalve was the problem until I got in there and did some very simple troubleshooting.
I'd still like to hear from someone that can explain the mechanical vacuum pump as to how it relates to the normal manifold vacuum.

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11-13-2017, 10:08 AM

#105

s1njin

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And you're sure this is the correct check valve even though Amazon says it doesn't fit my truck?

https://www.amazon.com/Motorcraft-YG360-Vacuum-Checking-Switch/dp/B000C5HZ24/ref=sr_1_1?s=automotive&ie=UTF8&qid=1510585568&sr=1-1&keywords=motorcraft+vacuum+checking+switch&dpID=21KV04JZS2L&preST=_QL70_&dpSrc=srch

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11-13-2017, 10:40 AM

#106

johnday in BFE

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Quote:

Originally Posted by s1njin

And you're sure this is the correct check valve even though Amazon says it doesn't fit my truck?

https://www.amazon.com/Motorcraft-YG...70_&dpSrc=srch

There is ZERO doubt in my mind. The bag I have still says YG360 on it.

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11-14-2017, 06:14 PM

#107

Barrettz1

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Anyone have this issue resolved?!?!? My trucks been doing it since 2500 miles now now it have 4500 and it’s had it in the shop once didn’t work now going back next week.

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11-14-2017, 07:25 PM

#108

johnday in BFE

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Quote:

Originally Posted by Barrettz1

Anyone have this issue resolved?!?!? My trucks been doing it since 2500 miles now now it have 4500 and it’s had it in the shop once didn’t work now going back next week.

What did the dealer do? Let me guess, they couldn't replicate the grinding?

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11-14-2017, 08:09 PM

#109

Blue2016XL

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Quote:

Originally Posted by Barrettz1

Anyone have this issue resolved?!?!? My trucks been doing it since 2500 miles now now it have 4500 and it’s had it in the shop once didn’t work now going back next week.

There are a couple of solutions in this thread alone. You may have a different part that is broken but, both of these solutions are the cheapest to try first outside of doing a visual inspection of the lines yourself.

Another one that I have heard can cause this noise is a loose bracket above one or both of the catalytic converters.

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