RE: [Chrysler300] 300G idling problem

[<john_nowosacki@xxxxxxxxxxx>]

The fluctuating up and down is caused by your anti-stall vacuum device that is mounted on top of the ram tubes.

This spring loaded device is connected to a vacuum line, which pulls the plunger "IN" which allows the idle to drop.

If the idle drops too far, the engine has reduced vacuum, which allows the plunger to push "OUT", where it contacts the bellcrank carb linkage and increases the idle speed to avoid stalling.  When the idle goes back up, vacuum increases, which pulls the plunger back in again, which drops the idle, and the cycle continues.

 

I would say that your problem is most likely a combination of the idle speed settings on the carbs and the adjustment of this anti-stall device.

The anti-stall device can only overcome a certain amount of 'too low idle' condition before a stall will occur.

 

Your description of 'somebody nudging the pedal up and down' is exactly what is happening, but it's not a person, but the anti-stall device.

Hope this helps.

John

 

________________________________

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Kenny Cassady
Sent: Friday, August 17, 2007 12:01 PM
To: chrysler300@xxxxxxxxxxxxxxx
Subject: [Chrysler300] 300G idling problem

 

Hey group,

I have an issue with my '61 G and am hoping for some diagnostic advice. The
car is completely stock, except for an electronic ignition (Pertronix I
believe).

When idling after warm up, the idle fluctuates, like a wave, up and down, as
if somebody where nudging the accelerator pedal up and down. This, and an
apparent vacuum leak coming from somewhere that hasn't been identified yet
(or maybe they're the same issue), seem to be contributing to a stalling
problem when stopped, especially problematic when switching gears, like in a
parking lot (not a problem when driving at speed though, only when idling).
I don't have the facility or equipment for this kind of work, so my mechanic
is working on it, and going through the step by step process of elimination
to figure it out. He's already replaced the distributor cap (worn) and
spark plugs (fouled, and wrong kind of plugs according to him).

Just thought I'd see if anybody has had any experience with this particular
issue(s) and might offer some advice to help in locating the problem. Thank
you in advance. Have a great weekend.

Kenny Cassady
Oakland, CA
1961 300G

 



[Non-text portions of this message have been removed]



To send a message to this group, send an email to:
Chrysler300@xxxxxxxxxxxxxxx

For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm

For archives go to http://www.forwardlook.net/300-archive/ 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/Chrysler300/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/Chrysler300/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:Chrysler300-digest@xxxxxxxxxxxxxxx 
    mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    Chrysler300-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/