A/C Question
 

On my '98 grand cherokee the ac works fine at low speeds but when I
get up to highway speeds it stops working till I slow down. Any
suggestions on what to check for. thanks

Re: A/C Question
 

It could also be a vacuum leak or servo failure.

Earle

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F205820.34E35E6B@cox.net...
> Hi Charlie,
> One reason could be the engine is running too hot, and has switched
> off the air conditioner to save it's self. You're got five years on the
> car, have you changed it's coolant every two years?
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Charlie wrote:
> >
> > On my '98 grand cherokee the ac works fine at low speeds but when I
> > get up to highway speeds it stops working till I slow down. Any
> > suggestions on what to check for. thanks

Re: A/C Question
 

Does it blow hot, or just seem to stop blowing? If it seems to stop
blowing, what's going on is a vac leak causing the flow to change to the
defrost vents. First thing to check is the vacuum check valve inline to
the firewall.
Kelly

lpm1204@worldnet.att.net (Charlie) wrote:

>On my '98 grand cherokee the ac works fine at low speeds but when I
>get up to highway speeds it stops working till I slow down. Any
>suggestions on what to check for. thanks

Re: A/C Question
 

Flash <flash@wcnet.net> wrote in message news:<g6u0ivctlh1luqpb80t6e43s5jpnkh5jaj@4ax.com>. ..
> Does it blow hot, or just seem to stop blowing? If it seems to stop
> blowing, what's going on is a vac leak causing the flow to change to the
> defrost vents. First thing to check is the vacuum check valve inline to
> the firewall.
> Kelly
>
It blows hot then when i slow down it gets cold again.