1997 Suburban K1500 5.7L Fast Idle

[fixingdaily]

Can anyone tell me what the assembly is that the arrow is pointing to? Also, where is the vacuum hose fitting (circled) supposed to go. I checked my brothers 97 Suburban (same motor), and his is the same (no connection).

The reason I am looking is that I have started to get a fast idle (about 1200 RPM). I am suspecting unmetered air intake (i.e. vacuum leak) and found this fitting.

In the meantime, I capped this port off, and the fast idle went away (now staying at about 550 RPM).

Thank you for any help.

John

 

[fixingdaily]

Can anyone tell me what the assembly is that the arrow is pointing to? Also, where is the vacuum hose fitting (circled) supposed to go. I checked my brothers 97 Suburban (same motor), and his is the same (no connection).

The reason I am looking is that I have started to get a fast idle (about 1200 RPM). I am suspecting unmetered air intake (i.e. vacuum leak) and found this fitting.

In the meantime, I capped this port off, and the fast idle went away (now staying at about 550 RPM).

Thank you for any help.

John

OK, I still have the issue with fast idle, It is intermittant. Probably did something to affect it as I was diddling with all the vacuum lines, etc. Also, I did the carb cleaner spray test and did not find any evidence of a vacuum leak. I am going to tackle the Idle Air Control Valve and see if that is the issue. Now I just need to know where to find it (don't think it is that thing I put the arrow on, . . . . . Is it?).

John