truck shaking?

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HemiBabe

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Hmm.... so it's like idling really rough and about to die?
 

pd298

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I had an 03 GMC Z-71 that did that... The idle would go really low and be rough. The problem was the throttle body was dirty.

Its possible that the truck could have a misfiring cylinder.
 

TampaRam

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I have an 08 ram 1500 QC and I notice that I get a rough idle if I am at a red light with the A/C off. howeve, if the A/C is on I don't get any type of rough idling. anyone know why this might be the case whether the a/c is off or on
 

Notorious

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Generally when the A/C is on, the idle is raised in other cars... that smooths out a lot of the rough idle at lower rpms. Not sure if this is the case with the Ram too.
 

MADDOG

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Check the plugs, clean the throttle body, check the EGR valve. Also, he should have a tach so what is it idling at?
 

bigbadram1500

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I've noticed this on my 05 every now and then recently. I know the TB's never been cleaned on it, so may need to try that. The idle will drop a little, like down to 500 and it'll chug a little, sounds like it wants to die, then it'll pop back up.
 

Burntfire

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My 02 did this. I did what MADDOG suggested. Turned out to be my throttle body.
 
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