AC only work on high speed

they both share the blower fan
the fuse is marked blower.
does the blower work on high only or dead on all speeds
this is the first tests.
ask for more.

Hi Barry, If you look carefully at the two AC pipes you will see two plastic valve covers (similar to valve caps on tyres, but larger). One is high pressure and the other low. When regassing the engine should be running ith the AC turned on. Regards John

first thing check AC compressor fuse.the AC compressor clutch should engage when you turn on airconditioner if AC compressor dont come on and fuse okay compressor clutch is open or low on refrigerant you need check your AC refrigerant low pressure side and high pressure side need a manifold gauge set. best let garage check out AC system could need system recharged or could have leak in the system.

you probably need new control switch.

There should be a high speed blower relay that bypasses the resistor for slower speeds.
Check with an auto parts store or the dealer.

You need to replace the Blower Resistor. High amperage can burn it out, so have the blower motor checked or replace it.

There is a HVAC relay and FUSE in the under hood fuse box, have you check both of these? If the blower works on any speed, the blower is good. You say it blows on lowest speed? The blower speed resistor is mounted on the blower housing. The HIGH SPEED BLOWER RELAY is mounted on the blower motor. You may have multiple problems but check fuses first, if all is OK, then a qualified repair shop will need to check further. You do NOT need the whole A/C system replaced. If it does blow cold, thats good, you just need the blower working.

Replace the ignition switch.

Sounds like it needs a coolant recharge. Many parts shops in the US will sell DIY AirCon recharge kits. Check the DIY sites, but basically, you can do this recharge without opening the hood-I believe the high-pressure connection is in the left side front wheel well.

the compression of your compressor is getting low. there are leaky valves that is why only at high speed the compressor would work right.

is you compressor noisy? that is a sign of a bad compressor.

tnx 4 using fixya,


drcool