When i turn on air it blow good cold air but as soon as i put it in drive it start blowing hot air can anyone tell me why
Is this a HVAC question heater and a/C?
cold engines, make only cold air
hot engines make hot air.
for 100 +years. now.
SOURCE: Fully warmed up; blowing hot and cold; Suzuki XL-7
Its just a vent damper plate not operating, it's like a gate which controls the flow of air,,usually they are operated by vacuum, or cables.
Service center time, unless you are handy with your own repairs.
SOURCE: 2001 Suzuki XL-7. Heater blows hot one side, cold the other.
No ductwork [to the lower vents] under the dash. They are part of the heater core / blower housing is integrated (all one piece).
After reviewing shop manual, we suspect that one of the three damper flaps is not positioning correctly; or debris has blocked one side (which makes more sense given the symptoms).
We're waiting for the temperatures to get back in the plus numbers to check out the physical arrangement.
SOURCE: ac blows hot
If your compressor is working the low side should be 15-38 psi. If you have 100 psi that means the compressor is not doing what it should. Make sure the outer clutch is engaged with the pully. If not A/C system check should be done.
SOURCE: 1997 Suzuki vitara heater not working only blowing cold air
Hi, I had this problem in my 2000 Suzuki vitara. Turns out it was an easy fix - something had disconnected under the passenger side dashboard (left side) - used tape to keep it together. I've found out that it can disconnect again if you shift the hot/cold lever from one side to the other too quickly. Sorry I don't know the technical parts behind the solution but at least it is a cheap and easy fix!
SOURCE: my 2001 suzuki xl7 air conditioner blows hot air
Lots of possibilities. The first thing I would do is to have someone turn it on and off, while you look around under the hood (carefully, because fans go on and off).
The first thing you want to see, is if the AC compressor clutch is turning on and off properly. When the fan clutch is off, the outside of the pully will spin with the belt, but the inside will be standing still. When it is on, the whole pulley turns. If this does not work, then it could be a fuse, switch, or the clutch itself.
If this is working, then you need to look into the small sight glass in the top of the receiver/dryer, which is a small vertical cylinder. It should show a flow of clear fluid. Bubbles means it is low on freon.
But the controls could be screwed up, with the hot water staying on, the cold air not be allowed in, etc.'
Operating the controls should allow you to see these things working.
To go beyond this, like check the compressor, the expansion valve, etc., you would need to put a set of pressure gauges on, which are about $50, and come with instructions. There are 2 because you want to compare the input and output sides of the compressor.
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