The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 01-25-2019, 05:55 PM   #1
Classics Fan
Registered User
 
Join Date: Jan 2018
Location: Anacortes. WA
Posts: 36
Rochester Quadrajet 4v Solenoid

I have a 1971 Jimmy with original rebuilt 350 and A/C. Questions about the carburetor solenoid: first, is this an idle stop to prevent dieseling, or an idle increase for the A/C to prevent low idle stall?

When I start the engine, the solenoid plunger extends (sometimes, not every time) for a few moments then retracts. This action seems to happen irregardless of whether the A/C is in the or off position. The A/C belt was removed by the PO and I have never replaced it so Iím not certain whether the air works or not.

Where does the solenoid get its power, and what possible causes are there for it to only work momentarily, intermittently? I have the idle speed set using the designated screw. If the solenoid is for idle stop, then why is there also an idle speed screw?? Thanks in advance for any insight to help clear up my confusion.
Posted via Mobile Device
Classics Fan is offline   Reply With Quote
 

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:44 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com