Intake Manifold Runner Control Error

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Old 08-09-05, 11:45 AM
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Intake Manifold Runner Control Error

'99 Windstar 3.8
CEL (MIL) on
Code P1518 retrieved "Intake Manifold Runner Control Error"
No other codes, just freeze-frame data (which I'll post if it's important)

Intake Manifold Runner Control Error?
These things have an Intake Manifold Runner Control? As in adjustable intake runners?
Could anyone confirm this and fill me in on how to correct this problem?
Thanks in advance for any information
 
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Old 08-09-05, 01:18 PM
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should have 1 or 2 vacum controlled diaghram that opens a throttle type blade in the intake start by checking these to see if they are working.
 
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Old 08-09-05, 02:24 PM
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Originally Posted by bejay
1 or 2 vacum controlled diaghram that opens a throttle type blade in the intake
Inside the manifold?
Do I have to take the upper plenum off?

I have found a vac hose & diaphram near the TB, but it looks to be part of the air injection system
The diaphram seems connected directly to a pipe the goes to the exhaust manifold

I have found another about mid-plenum, and that seems connected to the fuel lines (FPR I presume)

The VECI vacuum diagram seems to map out the EVAP and EGR systems, and does have the FPRC on there
That seems to be it
 
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Old 08-09-05, 04:41 PM
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The vaccum "pods" that control the runners, are located towards the front of the engine, just to the inside edge of the valve cover (if memory serves correct..) Each cylinder bank had 1 runner, therefore 2 runners, 2 pods..
For the life of me, I can't remember which is on top, the alternator, or the power steering pump..Duhhh.. But the easiest runner to see is basically right behind that component..
 
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Old 08-09-05, 05:50 PM
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....could it be electro-mechanically controlled?

Nothing in the valley (between the valve covers and the intake), fuel line, fuel line, fuel injector line
Nothing right behind the alt., not directly...but in searching around there..."in front of" the valley there's a little linkage thingie
It links by a rod to a black box in the middle of the front of the engine
Another rod comes out of the box to the other (firewall) side of the engine
The rod goes to...down to...get stuck in between a bracket and the valve cover???
...and above it is a vary lonely looking linkage hook thingie that I can rotate by hand
Hmmm....
The plastic attachment piece on the end of the rod is a little melted, but I stuck it back in the rotating linkage thingie for now
...that looks better

This black box seems to control both rods, though it's kinda tight in there and was getting dark out
It's a good size, maybe 3" x 4", maybe bigger
There's no vac lines that can see (given the above circumstances)
Just some electrical connectors
I'm thinking it's an electronic and mechanical control?
Maybe it just looks that way...

Looks like I'll have to get a new plastic tip for that rod, or something, I don't want it popping out again

Thanks for helping me find it guys, thank you very much!
Any input on how this works or a permant fix for the rod would be welcome!
 
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Old 08-10-05, 03:20 PM
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Honestly, All I've ever seen it the vaccum operated style, but I'd be a durned fool to say I'd seen them all! LOL But if you have 2 different linkages, 1 towards the front, and 1 towards the rear, and 1 is not connected, it sure sounds like you're in the correct area!.. Sorry for such lack of tech help, but I read this at home, and have no info other than the ole pea brain to go on..
 
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