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Old 09-09-2013, 03:51 AM   #71
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I never noticed any studder but i did notice slugishness under 3K and slow acceleration. Once over 3K it quickly picked up.

Going from an idle to wide open was better then with the flaps.

The flap are mounted to a square rod, as the rod rotates it rotates the flaps.

Maybe you have one that has rounded so its just flapping around causing your issue? as it flutters from open to close its effecting the air fuel mix on that cylinder causing your stutter?

I am just guessing though. You wont know till you remove it.

Im not 100% on this but you may be able to unscrew all the bolts and just move it away from the head a few inches and peek into the intake. You may not have to fully remove it to inspect the flaps.

Maybe you could move it out enough to poke a finger into each port and move the flap lever and see if one is slipping or loose/cracked.
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Old 12-01-2013, 09:52 PM   #72
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Since were talking IMRC, I've been getting a code so as it turns out my vacuum was pooched. It wouldn't hold any pressure at all, because these are expensive my mechanic bought a whole manifold with a vacuum and the solenoid on it. Still didn't work but the vacuum tested ok, so we put on a new solenoid and the you could see tumbler flaps moving. As soon as the car is turned off then turned on again the engine throws the same code again. He's thinking it may be the ecm is not grounding the solenoid so now it may be an issue with the ecm. He's going to borrow an ecm from a buddy at a scrapyard and double check. Could the 91 tune i'm running do something to the ecm? I've switched it back to the standard tune for all this work and it's still happeing.
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Old 12-03-2013, 03:55 AM   #73
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When i put mine back from the delete to stock mine threw a code and it was just the plug.

Mine has 3 units that have sensors on them. the diaphram that moves the flaps, then there is a vaccume selinoid thing just under the throttle body and something else a little further down from that.

If your sure everything is plugged in good then start swapping out those 3 things till it goes off.
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Old 12-03-2013, 07:57 PM   #74
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I'm running mine w/ the vacuum line plugged, going to the electronic/vacuum switch. Runs alot better, but of course has the mil on. I'd like to try the escape manifold, but I'd need to retune it. Anyone have a idea or know why only the escape 23's don't have imrc= tumble flaps, but all the other 20, 23's use them including the ranger's?
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Old 12-14-2013, 11:14 AM   #75
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When I replace my intake manifold w/ a escape manifold, what would I need to have still hooked up to have the cel off?
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Old 12-30-2013, 08:14 PM   #76
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Old 01-19-2014, 01:23 PM   #77
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Imrc

good afternoon gentlemen and ladies,

i am a new member and wish to tax your brains on the condition of P2004 IMEC stuck open.

the engine is a ford duratec, 2.3, from a ranger, it is installed in a home built sports car, complete with all the ranger controlls except for a focus intake manifold and throttle body, there appears to be no drivability problems but code P2004 is setting the engine check light,

the IMRC functions as follows,

turn on ignition nothing happens, defalt IMRC is OPEN

start engine, the solenoid opens and the IMRC operates to CLOSED position and then OPENS in about a second.

code does not set from battery reconnect until second operation of key, then code P2004 is set, there are no other codes set.

the solenoid can be seen functioning as described above,

the vacuum canister functions as described above.

the flaps can be seen operating as described above.

voltage to the solenoid is applied when ignition is turned on and ground is applied when ignition is turned on, this part of the system appears to operate correctly.

however, at the actuating diapham, we have a 3 wire plug, when the key is turned on, i have power, ground and a sensing wire which returns voltage to the PCM pin 8,at all times there is 5 volts in the sensing wire when the ignition is on.

as the PCM is searching for a voltage fluctuation between 1 volt and 5 volts which does not occure, it sets the code P2004 IMRC stuck.

if i unplug the actuator, there is still 5 volts in the sensing wire.

i have opened the harness to see if there was a short to a power wire but there was none.

i cut the wire, now if i test the sensing wire from the actuator, i get the required change in voltage but in the remaining wire to the PCM there is still 5 volts present.

i believe that one of two things is happening,

1. the PCM is energizing the solenoid to test the IMRC circuit and function at start up, or.

2. the PCM requires the IMRC to be in the closed position at and after start up which it is not detecting due to the 5 volts in the sensing wire.

3. maybe it does both of these functions?

i would be interested in your thoughts on this,

regards John.
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Old 01-19-2014, 01:36 PM   #78
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Imrc

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Old 01-21-2014, 06:37 AM   #79
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Use the Escape 23 i/m

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Originally Posted by john hennessy View Post
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Wow, sounds like fun car. If your using the foci 23 i/m on your motor, I'd get a Escape I/M for its the same, except it doesn,t use the imrc aka tumble flaps. Thats my next mod too.
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Old 01-21-2014, 11:36 AM   #80
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all very well to say that but it won't pass emmissions with the check light on.

here's a picture of the car.
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