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Old 07-03-2016
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Join Date: Jul 2016
Location: Carrollton
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Hose connections to Intake Manifold

On my 2002 two wheel drive there are two hose connections to the back of the intake manifold (by firewall). When looking from the front , the one on the right has failed (split at top bend). I cannot find where the other end of this hose goes. Following it with my hand, it appears to go back under the firewall. This split is causing periodic rough idle (and sometimes stalling). Can't find hose listed anywhere for replacement. Any ideas?
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Old 07-03-2016
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Location: Vancouver, BC
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Could go to the IMRC, Intake Manifold Runner Control

Google: 2002 ford ranger Intake Manifold Runner Control
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Old 07-04-2016
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Join Date: Jul 2016
Location: Carrollton
Posts: 2
Don't think so. Pictures of the IMRC show just a vacuum line (too small). Also, when engine was rough idling in the driveway, I heard a hissing sound and felt around with my finger. When I crossed the split hose, my finger was sucked to the hose and the idle immediately smoothed out. The hose around the split was very oily, suggesting some kind of crankcase ventilation.
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