Toyspeed.org.nz Message Board

by **xtreme.drifting** » Sun Mar 05, 2006 6:10 pm

my air con only works on high (on low or medium nothing comes out whether its on hot or cold). has anyone else got this problem or know how to fix it? not a biggie but would be good someone knew how to fix it

by **rallymazda** » Sun Mar 05, 2006 6:42 pm

whats your car?

good chance that its low on gas....

by **xtreme.drifting** » Sun Mar 05, 2006 6:51 pm

'89 ae92 toyota levin. cost much to fix? not a diy job i'm guessing

by **BZG** » Sun Mar 05, 2006 6:57 pm

your a/c resistor needs changing, any a/c guy should be able to sort this quickly for you, they corrode over the years.

by **matt dunn** » Sun Mar 05, 2006 7:49 pm

BZG wrote:your a/c resistor needs changing, any a/c guy should be able to sort this quickly for you, they corrode over the years.

Correct, And i'm sure he means his heater fan only goes on high, rather than the a/c itself,

by **Alex B** » Sun Mar 05, 2006 8:18 pm

Can you replace the coils with resistors? If so what sort of values would you use?

by **sergei** » Sun Mar 05, 2006 8:35 pm

If you replace coils with resistors they should be real high wattage (say if AC fan is 100W item the ressisor should be atleast half of that), and Ohms you actualy can measure with multi meter, I susspect the ressistors are of quiet low resistance...
If you are skilled with electornics best way to do it: make a driver on FET or bipolar transistor which works as pulse width modulated driver (similar to the way the injector driver works), this circuit can be very compact will not make a lot heat if designed properly (unlike the resistor design) and will be power wise much more efficient, plus you could replace normal fan adjuster with variable resisor wich will give very fine control.
BTW to find out how much power draws fan, measure the current it takes on full power and multiply by voltage of the battery at that moment.

by **matt dunn** » Sun Mar 05, 2006 8:43 pm

xtreme.drifting wrote:'89 ae92 toyota levin. cost much to fix? not a diy job i'm guessing

If you want, pull it out and send it to me and I can fix it for $25 as we stock the correct coils for them at work.

Matt

by **xtreme.drifting** » Sun Mar 05, 2006 8:57 pm

bit far away 2 send, im in auck.

by **FXGTV** » Sun Mar 05, 2006 9:33 pm

Harden up, its not that cold/hot in NZ :lol:

by **barryogen** » Tue Mar 07, 2006 7:53 am

FXGTV wrote:Harden up, its not that cold/hot in NZ

never lived in the south huh?

Click here to see "My Black Hole" · by **Stealer Of Souls** » Tue Mar 07, 2006 9:24 am

sergei wrote:If you replace coils with resistors they should be real high wattage (say if AC fan is 100W item the ressisor should be atleast half of that), ... how much power draws fan, measure the current it takes on full power and multiply by voltage of the battery at that moment.

Jaycar have a couple of kits capable of between 120W-240W @12V (so 144W-288W @ 14.4V). Should be easy enough to remote mount either the circuit or the adjuster pot.

by **FXGTV** » Tue Mar 07, 2006 9:55 am

barryogen wrote:
FXGTV wrote:Harden up, its not that cold/hot in NZ

never lived in the south huh?

I sure have. Christchurch and Dunedin

by **barryogen** » Tue Mar 07, 2006 10:18 am

FXGTV wrote:
barryogen wrote:
FXGTV wrote:Harden up, its not that cold/hot in NZ

never lived in the south huh?

I sure have. Christchurch and Dunedin

then you're a hard man... thats for sure.

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