3.0 fan for heater and ac was coming on only when it wanted too now it will not come on all fuses are good relay dont know how to check 1996 dodge caravan

Check the fuse panel and make sure that the a/c fan fuse is good and is making a good clean connection. If that is not the issue, then I would then check the connections to the fan, and if that is not the issue, then you may have a faulty relay to the a/c fan.
I hope that you have found this information to be useful, and if I can be of any further assistance, please let me know. Thank you for using fixya!

need to try and check power going to blower. Sounds like bad blower

Replace the relay under the hood .There is a black box that wii say relays check your relals ther sould b 2 also check fuses Good Luck

Because there is no supply to the fan , it is not working. So you need to check the fan with a direct link to test , is working check the RELAY box for the fan relay, next check on the thermistor, the control circuit of the temperature controller to trigger the fan relay. Also check on the fuse to the relay unit.
The AC cooling must be checked only after this circuit is working as a hot engine will not give a good result. cehck the gas pressure, check the pumping pressure to confirm the compressor.
Also the eveporator, condenser, pressure switch must be checked independantly.

Hi!!
Look in engine compartment close to battery for fuse box, remove cover and inside cover there is a diagram of fuse/relay locations.
You are looking for a fuse and relay, it should say blower fan or AC blower fan. First check fuse, if Fuse is ok. check Relay.
Good Luck!! Don't forget to rate this post!!

By chance are you saying the fans stay running when you turn off the engine, the problem is with the radiater fan relay, the points are probably sticking together, it's in the pdc box under the hood, power comes from fuse 4, 40 amp, through the relay, then to the fans, relay is controlled by the engine controller (pcm). just flip the cover and find the right relay, pull it out when they wont shut off, if it quits, swap it anouther relay from the pdc box, and test it again, fans come on at 212*F and shut off at 199-202*F. if the fans stay running while engine is running, you might have a coolant sensor issue, or cooling system issue. If you need more assistance, let me know. GOOD LUCK, RDJRP

First check the fuse for the fan. If it makes a humming sound, check if the fan blades have jammed somewhere and being physically stopped, it creates a humming sound.Also check the insulation of fan armature to see if an of the coils have shorted out. Also dont forget to check the condenser/capacitor which initiates the rotation of the fan................sodeep

ck ac relay and low side switch,,,,fuses ok? make sure there is nothing causing the ac not toif it where recharged it might have leaked back down come on,,,enough freon?

looks like fuse # 8 "heater control relay- ac clutch relay-cooling fan" fuse runs the 12 volt side " black and yellow stripe wire " pcm or ecm runs the ground side "red -blue stripe wire"- what else do you need?

Check the temperature sensor on the engine as this is the primary sensor that initiates the fans coming on through the vehicle computer.Also check the relays,there are relays for the fans too.Good luck.