When i am backing up my rpms go real low and it feels like it is going to die. It is an automatic by the way.

 

be more specific ......

 

when i turn on the car and start to back up

 

does it stutter, is it a steady idle just lowering? we need more information on what your doing besides turning the car on and backing up...

miles?
the car warm or cold?
only in reverse?

 

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thats kinda of how it idels. stedy idle but than goes well under 1000 rpm's and bounces a little over 1000 and then under. if I let the car sit for a while it won't do it anymore

 

well. Sounds like it may need to warm up more? How soon after you turn it on are you backing up? 5 seconds? 10? 30?

Also, how much lower on the rpms? got a number? does it only happen when backing up? or just idle altogether?

 

is ur e-brake off when backing? seen it before.....

if it's just at idle prob time to clean TB, MAF and possibly change coils/plugs if it's been awhile

 

When starting my 8 after sitting all night, it takes a few minutes for the idling to level off around 800. Prior to that it bounces between 800 and 1500 while warming up.

When reversing, I find that I do need to give the car more gas than normal.

 

the car runs at a higher rpm when it's cold because it dumps more fuel to help atomize more fuel so it willl start and also helps warm up the cat/o2 sensors quicker...