High cold engine start-up idle fixed!!

[stlcruiser]

Greetings:

Since purchasing my 80 2 years ago, the high sustained idle at start up (1800-2000) has frustrated me to no end. Tried the O-ring fix, truck did not respond properly.

Over the weekend, I cleaned the throttle body with NAPA Throttle Body and Choke Cleaner and guess what? High start up idle fixed! Cold engine high idle does not exceed 1200-1300. Any ideas why this would solve my high idle problem?

Thanks,

Steve
94 115,000

 

[cruiserman]

Nope. I cleaned out the throttle body, both intake chambers, head, and the block, and the startup motor speed is still high.

 

[EXPLORERGUY]

Congrats

I woudl suggest checking the fitzer valve also. It can also be the culprit

 

[khoopes]

Can anyone tell me what the fitzer valve is or where I can find the "O-ring fix" ? I am trying to troubleshoot this problem on my 80.

 

[IdahoDoug]

I have never heard of a "fitzer valve" and suspect it was BS as nobody posted on this thread again and the guy who posted that has only 4 posts - may not be here. Do a search or look in the FAQs about the high idle fix. I'll be doing it in the next few weeks.

DougM

 

[Chaldaean]

I woudl suggest checking the fitzer valve also.

Can anyone tell me what the fitzer valve is...

I have never heard of a "fitzer valve" and suspect it was BS...

IdahoDoug, you are correct again.

The Fetzer Valve is a fictional engine component from the movie Fletch:

Willy: What the hell you need ball bearings for?
Fletch: Awww, come on guys, it's so simple. Maybe you need a refresher course. [leans arm on hot engine part]
Fletch: Hey! It's all ball bearings nowadays. Now you prepare that Fetzer valve with some 3-in-1 oil and some gauze pads. And I'm gonna need 'bout ten quarts of anti-freeze, preferably Prestone. No, no make that Quaker State.


Non-tech BS.

 

[khoopes]

OK Thanks. I have been through the faqs before but I will try again.

It is causing my engine to knock sometimes during startup due to the excessive idle speed so I need it to be fixed soon.

 

[gisham]

i ended up putting 3 washers on the stalk inside the IAC Valve- finally fixed this issue for me...

 

[cool breeze]

cleaned all tb lines, egr valve, intake manifold...fixed