Ac compressor will not come on jumped pressure switch replaced control mod my computer says ac not requested looking for ac relays
It's not the relays. It's the control module or wiring. If you bought a used one, it could be bad. If new, it could be bad also, it has set on a shelf for years. You need a schematic. Your scanner already said this. A/C not requested..
SOURCE: 2003 Chevy Malibou RU872 resistor location blower switch relay
For location and replacement of the BMR. Remove the shroud below the glove box, 2 screws and a snap-pop fitting. Be careful of the courtesy light. Remove the blower moter and disconnect the power harness - - you'll need this extra room to work with. 2 more screws, same size, 7/32, 6.5, 7or 8mm on some, that holds the blower motor resistor in place. This replacement part is less than 40 bones at most parts store. Unplug, replace, re-install, test and you're on your way with about 2 hours of slow paced effort in your own driveway. Typical cost at a garage/dealer - up to $400.
SOURCE: I need to know how to jump the ac low pressure to get my ac compressor to come on.
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. Remove the plastic clip that attaches the two wires to the sensor and use a short piece of wire to connect the two terminals in side the plug by putting the ends into the cap. This will bypass the low pressure sensor and allow the AC clutch to engage and begin to cycle again. Remember this low pressure switch is there for a reason. If you don't add more r-134 to the system and allow the AC compressor to cycle you will destroy the compressor. You need to charge the system when you bypass the low pressure switch and get the system up to full charge status and reconnect the switch.
SOURCE: No power for AC compressor
try removing the plug off the low pressure switch on the accumalator plug a paper clip into the plug and turn ac on if it comes on then your low pressure switch is bad or your low on refigerant.
SOURCE: 98 Astro Van Intermittant Power to Fuel Pump Relay
I've been bitten by this twice! The culprit both times was the connector plug under the van infront of the fuel tank. the second time the connector pin and socket came loose inside the plug itself,( workes for a while then dosen't). Make sure there is good secure contact made in all sockets in this plug, and the pins are held where they need to be inside the plug itself.
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