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Old 11-03-2013, 03:56 PM   #1
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Code 2004: Intake Manifold Runner Control Stuck open

My car seems to be running fine but I keep getting this code come up. I clear it and it seems good for a week or two then it pops up again. I've checked to see what exactly a Runner Control does but I get conflicting answers on what to do about it. From what I understand there's a vacuum beside the throttle body, some people say take it off and clean it our but it sure looks like it's one piece. Other people say take the manifold cover off and clean the buttlerflys with throttle body cleaner. What's your guys' take?


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Old 11-03-2013, 10:12 PM   #2
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Originally Posted by Krusty Driver View Post
My car seems to be running fine but I keep getting this code come up. I clear it and it seems good for a week or two then it pops up again. I've checked to see what exactly a Runner Control does but I get conflicting answers on what to do about it. From what I understand there's a vacuum beside the throttle body, some people say take it off and clean it our but it sure looks like it's one piece. Other people say take the manifold cover off and clean the buttlerflys with throttle body cleaner. What's your guys' take?
Its the imrc= aka tumble flaps that are stuck open. I bet its the vacum/electronic switch on top of the i/m. Pull the vacum line off & see if your getting vacum & then check for power to the switch. You should be able to see the little white actvator arm behind the throttle body. When its in the up position its open & when down in the closed postion. The actvator hardy ever go out. To get to that you'll remove the t/b & there are 3 screws that hold it on, btw. See if you can get a wrecking yard switch. I'd run it the way it is, till you need to do emmissions test=obd2 codes.
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Old 11-05-2013, 12:53 AM   #3
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Alright, sounds like I don't have the time, know-how or patience to rectify this so into my mechanic she goes.
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Old 11-14-2013, 11:21 AM   #4
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Alright, sounds like I don't have the time, know-how or patience to rectify this so into my mechanic she goes.
Well, what you find out or replace?
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Old 11-14-2013, 03:58 PM   #5
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I would like to know as well, please. What did you find out?
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Old 11-14-2013, 05:34 PM   #6
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Moved to "General Technical Chat".
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Old 11-15-2013, 09:04 AM   #7
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i'm interested in the solution to this as well--I have the same problem, exactly. Still not sure which part the throttle body is, so I can check that actuator lever.
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Old 11-17-2013, 02:02 AM   #8
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Well, the night before I took it in I switched back to my regular 87 tune. Mistake!
Cleared the code. So all he could do was check all the lines and connections. Everything was ok there. Took it home, next day on the way to work, on comes the light. I've been running it ever since. Dropped it off yesterday morning for him to look at, he says "yup" gotta replace the "celonoid" (or something), take apart the manifold and check the runners. Couldn't do it then so I have to drop it off again next week. So we'll wait and see. Sure can tell the difference in tunes though, running regular tune on 87 just seems to lag at certain rpms. I'll let you guys know as soon as I know.
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Old 12-04-2013, 05:59 PM   #9
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So we checked the solenoid and the vaccuum. Vacuum was pooched and they're expensive. He phoned a buddy at a scrap yard and got the whole manifold, solenoid and vacuum for $275. Put it on vacuum working but now the second solenoid is not working. Ordered a new solenoid, installed it. Car starts up, no problem, no engine light, great, turn the car off, turn it back on, 5 seconds later engine lights come on. Vacuum working, can hear the solenoid clicking the flaps open/close but doesn't stay working. Mechanic says might be something wrong with the ecm. Could be the 91 tune messed it up, I don't think so but at this time anything seems possible. He 's going to borrow an ECM and try that. Personally I don't think it's the ecm. Anybody got any other suggestions? Thanks.
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Old 12-04-2013, 10:18 PM   #10
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What I found is the electronic vacuum switch goes out. I haven't heard of a bad acuvator or the linkage either. Yea, the flaps get lose, meaning a new intake manifold or just remove them altogether. A tune wouldn't have nothing to do w/ that. I don't beleive you have a pcm problem either. Where the vacuum line comes out of the intake & to the electronic vacuum switch, try plugging that line at the switch. Hows it run now? You have a cel on thou.
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