[V8] Still Freezing my Feet off...

[dsaad at icehouse.net]

Since you were just in there -

Did you seal the new core in place?
Did you plug the vacuum connector back together?

- make sure you got all the vacuum hoses back on

- use a hand vacuum pump and check that all vacuum motors are working as they
should and not jammed up or stuck

- check that the temperature flap motor is working. You can use the diagnostic
mode of the CC head to do this. You may also just try removing the flap motor
and makeing sure the flaps are not bound up.
A quick and dirty test is just to set the CC in auto and the temp at minimum.
The flap should move to one extreme position. Now set the temp to max and watch
the flap move to the other extreem. Do this with the engine off (key on) and you
will hear things moving inside the blower box assuming you have some reserve
vacuum in the system.

Dave


Quoting robert_a_dupree at bankone.com:

> So I think I've got a problem with the replaced heater-core, flaps,
> temp-sensors or controller mechanisms.
> The car gets warm in both oil (80c) and water temps (90c).
> My seat heater gets warm, so that's not a problem.
> Even when leaving the temp set to "HI" and the Blower on "Low" the air
> coming from the vents on a 25deg day feels at best 40deg.
> This is true for defrost vents, dash vents and foot vents.
> The temp differential over ambient seems to be constant so the car
> eventually gets above 60deg on the inside, except for the foot area.
>
> I come to the conclusion that either:
> 1.  There is minimal hot engine water flowing into the heater-core because
> of a valve problem
> 2.  No hot water in core because the HVAC controller is sensing the output
> air incorrectly
> 3.  Plenty of hot water in heater core, but no air flowing through.
>
> So can someone scan the couple of basic diagnostic trees from their V8
> service manuals?
> Before I finish putting all the lower trim panels in place I'd like to get
> this resolved or at least improved.
>
> Help.
>
> Robert A. Dupree
>       Investment Bank Technology, Chicago - MarketData & ECN Project Team
>       JPMorganChase & Co.
>          312-325-3587 desk
>
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