[DML] Re: Idle drops too fast

["painterdave72" <painterdave72@xxxxxxxxx>]

--- In dmcnews@xxxxxxxxxxxxxxx, "Harold McElraft" <hmcelraft@xxxx> wrote:
> 
Its done it before but I dont remember how i fixed it.. I have just recently 
resealed the manifold and injuecotrt supports and had the mechanic set the 
c0 .. it has no more vacumn leaks.. seems like the only way i can get it not to 
do it is to not have the arm push the switch... then it idles a little high but the 
idle goes down nice like it should.. I spoke to John Hervey and he said it was 
probably an adjustment on the arm screws.. but he said the screw that hits the 
switch is supposed to hit that first?? I thought it was the other way around as 
some people have said.. it doesnt seem to make any difference anyway.. any 
other suggestions? I sprayed the idle motor out with wd40.. Dave..









Did this just start to happen or is it in conjunction with something 
> you have done? It makes a difference in where to start looking.
> 
> If it just started you probably have a problem with the idle motor 
> becoming sticky. You can remove the hose connecting it to the cold-
> start valve and spray some Marvel Mystery Oil in it. Check the 
> connections at the ignition coil - this is where the RPMs start to be 
> monitored - also check the position of turn-on of the idle speed micro-
> switch. There is an adjustment procedures somewhere in the manual but 
> a quick look did not locate it - I just set it so that the switch 
> turns on just as the throttle plates start to open. If the switch is 
> set so the idle motor comes on too soon the idle motor is completely 
> closed when the throttle plates close and the idle motor has a big 
> adjustment to make to speed up the engine - which usually accounts for 
> some lag. A sticky micro-switch (internally) can cause the same 
> problem (replace it), poor connections can too (try disconnecting and 
> reconnecting all connections on the idle speed motor, engine grounds, 
> fuse, etc., to improve contact).
> 
> The engine has to be in good tune and free of vacuum leaks for the 
> idle circuit to function properly - which means, you need to examine 
> all the vacuum hoses, connections, etc., to see if the idle motor is 
> being affected by some other issue.
> 
> Harold McElraft - 3354
> 
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, "painterdave72" <painterdave72@xxxx> 
> wrote:
> > Hey all.. just wondering if anyone has ever encountered their idle 
> dropping 
> > too fast when you let off the gas... MIne is doing that for some 
> reason now .. it 
> > goes down to like 500 rpms before it catchs itself and goes to 
> normal idle.. I 
> > put the spring on the throttle spool on the weakest setting.. but it 
> still does it.. 
> > any suggestions?? thanks..Dave.






To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

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

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

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