Auto Air Conditioning & Heater Repair: 2001 Jeep Grand Cherokee, jeep grand cherokee, vacuum hose

Question
Hello, have an interruption of air flow with a/c when going up a slight incline and accelerating. Believe it to be a vacuum hose problem.Need to see a vaccuum hose diagram in order to follow and see if it is a hose or a "T" connector that is at fault.Could you direct me to such a diagram or suggest your prognosis ?? Thanks !

Answer
Hi Bobby

At the fire wall near the evaporator hose inlet you will find a vacuum hose.  Follow that hose to a check valve (T looking).  check hoses and see if any are broken or disconnected.  You can check the valve with a pump or just sucking on one of the smaller ends while plugging the other end.  If you loose vacuum then replace the valve.