Strange A/c Problem from top to bottom..

[youmadeyou]

I have searched on here and didn't see anything with my problem so here we go.

I have a 98 ram with 5.9 mag motor .

A/c Blows cold and strong BUT... when ever I touch the gas pedal to accelerate the A/c Stops blowing from the TOP vents and only blows from the bottoms vents Intel I take my foot off pedal and stop accelerating. then it goes back to normal blowing out of all vents. but the hole time its doing this the A/c stays blowing cold .. I don't know what the problem is and any help would be awesome.

And if i really Stump on the gas and the A/c goes very low till im done gassing it. not sure if this is normal as well ...

this is my first dodge.

 

[moparlife]

my truck does the same thing and i heard its pretty common. I was told it could be a vacuum leak or something along the lines

 

[youmadeyou]

Thanks I will check again for that .. but it seems like it would be something else because the AC works strong and cold.

Anyone Else have any Ideals?

 

[hermit]

I had a 1990 that did something along those lines. Can't remember the exact characteristics, but it was a little vacuum check valve. Seems the vents were controlled by vacuum, not mechanically. In that year it was a known problem, and they improved the valve design. The valve looked almost like an inline fuel filter

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[youmadeyou]

Nice , Does anyone else have any info or pictures of where and what this valve looks like and is .. and if this is the problem ??? thanks..

 

[jbmobbs]

yes its under your radio on the air box. you can reach it under the dash, ill look for pic

 

[youmadeyou]

Thank anyone else with more info or ideas of that the problem could be is greatly appreciated as well ....

 

[youmadeyou]

Anyone?

 

[Pushrod91]

Mine does the samething. I think the controls might have a hair line crack. My Ford did this and that's what it was. Not sure though. Haven't gotten around to checking it.

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[hermit]

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Mine was under the hood..... close to the firewall. Between the air filter and firewall i think. Been a long time but closer to drivers side if i remember. It was white plastic i think.

 

[youmadeyou]

anyone have a picture of what it is ? ect....

 

[Okiespaniel]

Yes...google or bing "dodge ram wild vents" and you'll get some hits including this RF gem.

http://www.ramforum.com/f64/wild-vents-1255/

 

[youmadeyou]

also thanks ... and for anyone else having this common problem .. heres the link to a thread that could help http://www.ramforum.com/f64/wild-vents-1255/