1991 GMC Sierra "jump low side ac pressure" Questions

...low pressure switch or cycling switch on the accumulator/dryer on passenger side firewall will also keep in from coming on. this can be checked by jumping the system there.If you jump it and it comes ...

...LOW PRESSURE SWITCH ON AC FOR GMC SERRIA Unplug sensor and use a jumper wire across the plug side,,, i think there are a couple 2 or 3 pressure switches so it could be one of the others ...

side 55 low side checked fuses even unpluged high pressure switch on back of comp. if the Ac compressor clutch isnt engaging even with a hot wire then the solonoid has packed up if does engage then it

...jump remove the plug and jump the two points while the ac is set to on and the engine is running. Check to see if the compressor kicks off. If it runs then you have either low freon or a bad

...jump it or what they are (low or high pressure side) when it isn't engauged? Also you could be dealing with a relay or a sensor that detects your pressure readings. Really knowing your pressure ...

...low side to ground in pcm The low side pressure switch in the AC low pressure line signals the PCM (computer control) to close the AC compressor relay and raise the idle speed. If ...

...jump a low pressure sensor for the ac system. If you look on the low pressure side of the AC system you will see a plug that is incorporated in to the line. It will have two wires leading to it. ...

...low pressure switch located not getting 12v at green wire on compressor. The ac clutch relay is working and I tried jumping pin 30 and 87 on the ac clutch relay and the clutch will not engage. ...

jump your low pressure switch to get the compressor going to add more refrigerant to the system. But if your low on charge, it may be "best to take it to a shop to have them fill the system". CHECK AC

...low side line,the large ac line,this can be the problem,try jumping the two wires that are plugged into the switch.If the freon is low,or out,this switch will not allow the ac compressor to come