blowing a/c fuse???

[JDSfastGN]

Alright, well I keep blowing the ac fuse on my 86. It has happened twice in the past two days. I don't mind not having the A/C , but the fuse takes the power master along with it. What should I check? I have a bad walbro 340 in the tank that makes funny noises and won't put out more than 52#s of pressure at WOT could this be putting a strain on my electrical system, blowing the fuse? Any help would be great. thanks a lot.

 

[JDSfastGN]

ttt anybody????

 

[xtremexnyc]

Did a search and came up with this thread. I'm having the same issue with my car. Everytime I turn the A/C on it blows the fuse. If someone knows the fix or where to start troubleshooting please help.

Thanks

 

[John Larkin]

Does it blow the fuse when it's on vent? There's a schematic on gnttype under electrical called fusebox and bulkhead. Look at the a/c fuse and see what's connected to it. I learned this trick this weekend: unplug everything that is on that circuit and then plug one thing back in at a time. The guilty party should pop the fuse. Rig up a DVM so you can see it while under the hood. When it goes to 0, you know the fuse popped. Good luck, this is time consuming.

 

[xtremexnyc]

On Vent the fuse is fine and it dosen't blow. It only blows when it is on Max or Normal. Thanks

 

[quick85]

fuses

i worked on a tr that did that, look at the diode on the compresor plug. i bet the small leads are rubbing together. just pull them back apart slowly. pat

 

[xtremexnyc]

Thanks for the information guys! I'll check the plug on the compressor. More opnions please, keep em coming

 

[TURBOV6]

On the blower motor there is a relay that inside. Try to switch it out with a buddy and see what happens.

 

[DCVING 6]

Same thing happened to my car. The blower motor worked fine, we also did a few other things to it. Now the air blows only out of the defrost, and it's not cold. My air used to work, untill it started getting hot out.

 

[ThikStik]

Buy some fuses, then work your way from front of car to back. Pull ac clutch wire. Blown fuseY/N? if No , pull blow motor wire pack. Y/N? If no , pull control head wires, no blown fuse then check wires from head to: relay, ac clutch, blower, for a pinch to ground.
GL