Tom Henderson wrote:
> Tom Henderson wrote:
>> Hello from a Jeep newb!
>>
>> Was driving my 1997 wrangler in the rain today, and switched the vent
>> over to defrost with the fan on high. The side defrost vents had very
>> good airflow, but there was almost none from the vent that blows air
>> on the wind****eld. There was also a whistling sound from that vent
>> like air was trying to get around an obstruction. The other vent
>> positions (dash, floor) seem to work fine.
>>
>> What should I be checking?
>>
>> Thanks,
>>
>> Tom
>
> OK, got a closer look today. The vacuum lines that connect to the vent
> control switch look OK. When I slide the control to the right from the
> "Floor only" to "floor/defrost", I can hear a vacuum leak sound that
> lasts a second or two.
>
> Another thing I discovered is somewhat of a workaround. If I slide the
> control all the way to the left (off), and turn the fan control to low,
> then slide it over to the right, the air flows through the wind****eld
> vent normally. this continues as I move the fan to the ext highest
> speed, but when i go to the 3rd, you can hear a vent door slam shut (I
> guessing that's what it is) and the whistling sound of trapped air
> resumes, as well and almost no air flow from the wind****eld vent.
>
> Has anyone run into something like that before? I'd like to take a look
> at the other end of those vacuum lines, but it appears I would have to
> remove the entire dash to do that, and I haven't worked up the guts for
> that yet.
The valves do fail. There is one on the GC that should be a recall but
isn't because it is a sleazy $1000.00 labor cash grab to fix it.
Yours sounds like one has failed.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
'New' frame in the works for '08. Some Canadian Bush Trip and Build
Photos: http://mikeromainjeeptrips.shutterfly.com
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