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Old 05-09-2017, 04:00 PM   #1
hoosierrun
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Join Date: Nov 2015
Location: Seminole, Florida
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2006 VUE 2.2L
Default Just replaced intake manifold on 06 Vue, 2.2

After fighting erratic idle, occasional limp mode, MAP sensor code, and finding no vacuum leaks, I just replaced the intake manifold with a new AC Delco piece.

I tried for a month or so to figure this out, constantly checking for vacuum leaks, substituting a different MAP sensor, replacing throttle body gasket, etc.
Finally with the engine running erratically in the driveway, I sprayed parts cleaner all over the manifold and noticed a change in the idle speed and saw the erratic condition smooth out for a brief moment.

I thought I would just take the manifold off and replace the gaskets, but the plastic manifold worried me. I looked on Amazon and read all the reviews for the AC Delco intake manifold and saw that it resolved a lot of owners problems. I also read that the new manifold comes with all new gaskets. Amazon's price was about $80, but I ended up getting it for $70 from Jet with a 15% discount, no free returns, and pay by debit card. The piece arrived late this morning by Fed Ex and to my surprise, it not only came with new gaskets, but there was a brand new MAP sensor installed in it. This is definitely a good deal.

Changing the manifold was a PITA because of tight conditions. The dipstick tube and several wiring harness barb clips are stuck on it. I had to remove the oil filter housing lid and a stud on the right which is a fastener for the manifold (took a small E-type socket to get it out). The power brake booster and purge vacuum lines had to be unclipped, MAP sensor and TB electrical plugs removed. Then I could wiggle the old unit out and new unit in.

Bottom line is that my problems are resolved. It took a couple of drive cycles for the computer to re-learn the mixture, but I am amazed how well this thing runs (better than when I bought it a couple of years ago).

One additional side benefit is that I know for sure my PCV orifice is fully open. I am always happy when things work out.

Life is good!!

...
John.... 2006 Saturn Vue, 2.2, 186,000 miles Recently junked out - (threw a rod)

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Old 05-09-2017, 04:59 PM   #2
fdryer
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2003 L-Series 3.0L Sedan
Default Re: Just replaced intake manifold on 06 Vue, 2.2

Quote:
Finally with the engine running erratically in the driveway, I sprayed parts cleaner all over the manifold and noticed a change in the idle speed and saw the erratic condition smooth out for a brief moment.
Did you find the source of the vacuum leak with the intake manifold removed?

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Old 05-09-2017, 05:39 PM   #3
hoosierrun
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2006 VUE 2.2L
Default Re: Just replaced intake manifold on 06 Vue, 2.2

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Originally Posted by fdryer View Post
Did you find the source of the vacuum leak with the intake manifold removed?
It was probably the seals. These were changed out 2 years ago with Ebay gaskets when I did the HG. I did notice that PCV orifice was totally carboned over and that there was some oil in the intake manifold internals.

I may have been able to get by with just changing the gaskets, but had it been a hairline crack or warpage, I would have been doing the job again and still buying a new piece. I really just wanted to get the job done quickly and be on my way. $70 is not too bad to spend, considering that I could have suffered all the inconvenience and cost of taking it to a shop.

...
John.... 2006 Saturn Vue, 2.2, 186,000 miles Recently junked out - (threw a rod)

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