Idle Question

[NVR2OLD]

Had the truck out today and started fine and idled fine, but while out driving and coming to a stop the rpm's goes to low and I have to burp the throttle a few times to keep it running. Idles fine after that. What should I check?

 

[Brat]

More then likely a bad TPS.

 

[NVR2OLD]

More then likely a bad TPS.

TPS didn't help! I'm also getting po174 fuel system to lean after putting on Bassani Headers and under drive pully. The addaptives are reading Rt +33 and the Lt -22. I will have to retune the truck. I didn't think the headers would leaned it out that much.

 

[VPRPWRD]

TPS didn't help! I'm also getting po174 fuel system to lean after putting on Bassani Headers and under drive pully. The addaptives are reading Rt +33 and the Lt -22. I will have to retune the truck. I didn't think the headers would leaned it out that much.

You most likely have a leak before the pre cat o2 sensor on one side.