The air conditioner in my 2000 Dodge Ram blows well except when I step on the gas. Then the air stops blowing througt the front vents and blows out the windshield vents. It does this whenever I am accelerating. When I'm cruising it blows fine through the front vent. What's wrong with it?
One person said it could be clogged cabin filter, another said leaking vacuum.... are either right?
2006-06-24 06:30:30 · 11 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Dodge
Loss of vacuum pressure. There are a series of motors that control doors inside the HVAC housing. As you accelerate, the pressure changes and the doors close. This was a common problem on 1996 and newer Dodge B250 vans. Go to your local Dodge dealer and ask them for a larger check valve (part number 4677204). This valve will be three time the size of the one you have and provide better pressure.
2006-06-24 17:15:00 · answer #1 · answered by pcnut4u 2 · 1⤊ 0⤋
you do indeed have a vacuum leak generally these occur at the under-hood connections such as the water control valve and the vacuum storage tank, the fact that enough vac. is available at idle suggests that the source line is intact if you listen closely and tune out other ambient noises under the hood you can find the leak in short order, [engine must be running so watch your hands hair etc. to keep away from moving parts] also listen inside the cab if you hear a constant hiss from push button set area you will probably need a vac. function switch these are usually sold separately from complete Assembly
2006-06-24 22:00:52 · answer #2 · answered by hobbabob 6 · 1⤊ 0⤋
YES
Leaking vacuum for the hoses that go to the heater
Or you have a canister with a leak
The canister is used to hold air for the vacuum
You may also check the vacuum hoses on the engine
When you stomp on it ,,it takes the vacuum from the canister because of a hose leaking
Do you hear a squeel when stomping on it
or a loud hisss sound at idle
2006-06-24 13:37:26 · answer #3 · answered by Vulcan 1 5 · 0⤊ 0⤋
I have 1994 1500 Ram that has 185,000 miles on it. I had the same problem. But the engine ran a little rough. I replaced the cam and timing chain. the lobes were worn. The vacuum was back were it should be. The engine is back the new truck performance.
2006-06-28 11:38:09 · answer #4 · answered by miovinelli@sbcglobal.net 1 · 0⤊ 0⤋
There is a valve behind the temperature controls that diverts the air from one vent to another
Im betting thats bad.
2006-06-24 13:34:39 · answer #5 · answered by snakeman11426 6 · 0⤊ 0⤋
This is common with all dodge products, you will find in the winter while accelerating the heater will change to defrost, then switch back again. Unless you have your foot to the floor all the time, I would not worry about it, this is normal.
2006-06-24 17:37:44 · answer #6 · answered by clowdy4 4 · 0⤊ 0⤋
The vacuum sources/lines need to be checked and repaired if needed,you may also need a new check-valve in the vac system,,a common problem easily/cheaply repaired.
2006-06-28 12:48:29 · answer #7 · answered by kurt 2 · 0⤊ 0⤋
You have a Dodge Ram that blows?
well...get a Chevy.
2006-06-24 13:33:53 · answer #8 · answered by n/a 4 · 0⤊ 0⤋
sounds like vac switch or switch regulator under the dash or a cracked vac hose those behind the dash and under the dash are small but check all inside and out there are a lot
2006-06-24 14:04:09 · answer #9 · answered by ogdad223 4 · 0⤊ 0⤋
Leaking vacuum line somewhere.
2006-06-24 13:34:00 · answer #10 · answered by parshooter 5 · 0⤊ 0⤋