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  #1  
Old 01-25-2013, 06:38 PM
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Default '03 QC HEMI IDLES at 500 RPM

Hey whats up guys? This may have been mentioned before in a previous thread but I haven't had any luck finding anyone with the same issue. I have an '03 Ram QC 2wd with a Hemi w/ 78k and I've noticed lately that the idle seems to drop lower at a stop. Whenever I pull up to a stop light the RPM's will sit at about 500-550..which causes a slight vibration..almost like a misfire. If I slightly tap the gas pedal the RPM's will jump to about 700rpm and idle smooth as can be! This is a constant thing every time I'm sitting idle at a stop in drive. I'm suspecting it may be the air intake temp sensor but I'm not receiving a check engine light / code either.

**ALSO, I do NOT have a cold air intake...still running the factory air box**
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Old 01-25-2013, 10:05 PM
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Huh. Mine idles at 500 no problem...
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Old 01-25-2013, 10:22 PM
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The IAT isn't likely to be the cause but a dirty throttle body could be.
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Old 01-26-2013, 11:10 AM
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Quote:
Originally Posted by RamTech View Post
The IAT isn't likely to be the cause but a dirty throttle body could be.
Looks like I'll have to give that a try...I have some TB cleaner here at the house.
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Old 01-26-2013, 11:14 AM
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Quote:
Originally Posted by HemiLonestar View Post
Huh. Mine idles at 500 no problem...
Really? I find it strange that when I tap the gas, the idle jumps to 700 and stays there...but maybe it has something to do with the throttle body.
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Old 01-26-2013, 04:00 PM
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Quote:
Originally Posted by FastCarsNGuitars View Post
Really? I find it strange that when I tap the gas, the idle jumps to 700 and stays there...but maybe it has something to do with the throttle body.
Yeah, idles between 500-700 neutral, 500 in gear. Might be a dirty TB.
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Old 01-27-2013, 10:31 AM
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shit mine idles at 3-400 sometimes at lights. cant even tell its running. no codes or lights. the only time mine idles funny or shakes is right when i come out of the MDS mode.
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Old 01-27-2013, 07:30 PM
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So glad I don't have that to contend with as well.
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Old 02-02-2013, 05:28 PM
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My 2006 is doing the same thing and I have been chasing the problem for months. I have replaced all of the sensors replaced the injectors and the throttle body with no resolve.
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Old 02-03-2013, 05:37 AM
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Get a programmer and disable it.
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