better blower motor

[bugdewde]

See page 3 of " AC CLEAN? " thread. I posted some pics of how some Jeepers added cabin filters under their Jeep cowls. I'm sure something similar could be adapted to the GMT400 intake.

https://www.gmt400.com/threads/a-c-clean.49521/page-3

 

[_nickjoseph]

Wonder if there is a voltage drop @ the blower motor. Could be an issue for some people. Mine blows pretty good @ high + recirc. Dirty contacts and undersized wire + corrosion are issues on these trucks everywhere.

I’m dealing with that drop. 11 with truck off and 12 with it on. Do I replace motor or wires with thicker ones? And how far back do I have to cut to run thicker ones?

 

[454cid]

I’m dealing with that drop. 11 with truck off and 12 with it on. Do I replace motor or wires with thicker ones? And how far back do I have to cut to run thicker ones?

Try to find out where the wire originates, or maybe use the oem wires to trigger a relay and run a fused wire from the battery.

 

[_nickjoseph]

Try to find out where the wire originates, or maybe use the oem wires to trigger a relay and run a fused wire from the battery.

I will trace it back tomorrow and try to run thicker. If not might try a new motor and see or clean the connectors

 

[ROBERT McCORMICK]

I know its a old thread but I have had my truck for 10 plus years always sucked, e fan conversion upgraded compressor, red ford oriface a/c is super cold, evap cleaned then replaced still sucks ... well blows terrible. I have figured out perfect charge to make super cold, im finally fed up and im going to make it blow more air. I'm thinking pull dash port every chamber ? or maybe start with putting a way better blower. I will report back. if anyone has any ideas let me know. Im in AZ and I love this stupid truck, its blown with built motor and tran even has billet 3/4 hub, locker, stereo everything you can do lol, but still drive wifes Porsche more than I want because a/c sucks in summer. Sorry for grammar my teachers would cringe.

 

[east302]

One thing to rule out: there is a single red wire (542 in the diagram below) that feeds battery voltage to the high speed relay when it’s set on high. It has a connector (C203) roughly above the blower with the wire then going to the relay.

Check that connector, make sure it isn’t melted and causing a voltage drop.

Good luck, let us know if you have an ah-ha moment. The ductwork seems reasonably open but I’m sure the blower sees a pretty big loss going through the damper box in the center.

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