RE: [DML] Bogs on cold drivaway

[Travis Goodwin <tgoodwin@xxxx>]

The vacuum advance is controlled thermally. There's a vacuum valve connected
to a coolant pipe and will only allow vacuum to pass to the vacuum solenoid
when the engine is above 104 degees F. I would think this is an emissions
thing to prevent you from just burning a bunch of gas to overcome a
sluggish, cold engine. Once the engine warms, vacuum passes to the solenoid
which is de-energized (opened) when you hit the gas, passing the vacuum to
the distributor. 

As I have learned, a centrifugal advance does exist even though vacuum
advance is not present.

If there was a way to eliminate the thermal valve from the equation, the
sluggish problem would go away. In that case, you'd have a vacuum available
to the solenoid all the time.

> Message: 1
> Date: Wed, 17 Apr 2002 23:29:43 EDT
> From: DHughes030@xxxx
> Subject: Bogs on cold drivaway
> 
> Group,
> I am completely satisfied with my cars drivability except 
> for one aspect. 
> On a cold startup and driveaway, the car has a bog/hesitation on 
> acceleration. This last for about two miles. Does your car 
> do this? Is this 
> "cold nature" common to all D's for this short period of time 
> due to vacuum 
> advance being withheld? It's not a bother, but if it's not 
> normal I want to 
> work it out.
> 2) We have a 9 month old child. This severely limits my driving 
> opportunities in the D. Have any of you ventured to safely 
> and securely 
> mount a child safety seat in your car? If so, can it be done 
> in a way not to 
> permanently alter the car?
> 
> Thanks, Don