advice

[dieselman]

Ok here is my problem now that it is getting cold up here in canada my truck dosen't have a high idle. When I start it it goes to 1000 rpm for 5 seconds then back to 550 rpm and sounds like it might stall. I was thinking it was the air idle control. The truck is a 00 silverado 1500 4x4 with the 4.8 vortec it has recently been tuned with new plugs and wires[stock GM platinum]. If I try to drive away without letting it warm up for 2-3 min. it has a slight hesitaton once it is warm runs perfect and smooth. Any feed back would be great. Thanks

[Shaners]

It seems like your idle is dropping off way too soon... I'm not sure what the root cause would be though.

[dieselman]

 

Just to let you know it was the air idle control now when I start it it will run at 1500-1800 rpm for a min. or so then slowly goes back down to about 8 till I drive for a bit then back to 550. The part up here was $129.50 it beats takeing it to the dealer