Idle question?

[ih8chevy]

I have a 99 sprt 4x4 with what I can tell by the VIN is the 4L SOHC. When Idling it runs at 500rpm. It sometimes stalls when first started but once it warms up no problems. Is this idle speed too low or is it normal?

 

[marragtop]

Try cleaning the IAC valve. Do a search, there are a lot of posts on this.

 

[aldive]

I too would try to clean the IAC ( http://www.explorerforum.com/forums/showthread.php?t=84220 ) first, however, more than likely you will need to replace the IAC ( cleaning has never worked for me ).

Good luck ......

 

[je5]

Lower intake manifold O-rings

I have a 99 sprt 4x4 with what I can tell by the VIN is the 4L SOHC. When Idling it runs at 500rpm. It sometimes stalls when first started but once it warms up no problems. Is this idle speed too low or is it normal?

Possibly need to replace your lower o-rings. PM me if you need assistance.

 

[ih8chevy]

Thanks for the info. I will try cleaning the IAC first. I didn't think that idle speed was right but I did buy it used with 110k on it(who knows what has been done to it). I'm planning for the future for a brown wire mod and SASOS. I was reading earlier about the 4.6 TB swap. What other parts can cross over?