Toyota 4Runner Pickup Truck Air Conditioner Amplifier module in good shape.
This works in 1990 to 1995 models using this SAME part number.
Be sure this is the same as the one you are replacing.
NOTE:
This works with several other electrical components within the AC
system. This will NOT fix your problem if you are not sure exactly what
is causing your AC system to not work. If the refrigerant level is low. The
low pressure sensor will prevent the system from turning on. If the
thermostat is malfunctioned and stuck in the "open" position. Your
system will not turn on. Both those components can very easily be
bypassed with jumper wires to see if either of those items are
preventing the system from turning on. Of course the basics is to verify
the systems is getting power and not just the green light on the button
lighting up. Verify the fuses and relays are good and functional. If
you bypass your low pressure sensor and the compressor comes on. DO NOT
run your system with low Refrigerant. Get it fix and charged. This AMP card is
the central control for all those components including the compressor
clutch. Card only works as good as the parts already in your system. If everything else checks out electrically within the AC System. Then this is probably your fix.
Story
Time: Not necessary to read if you don't want to, but its educational
about IDIOT mechanics and a recent high repair estimate I had for a AC
repair for my 2018 Tacoma! A lot of mechanics working in shops these
days including Toyota Dealers are complete IDIOTS. I'd say for a lot of
things most of you can do a better job fixing your car using YouTube and
Google then a lot of shops will. I do almost all my own work my self on
all my Toyotas since the mid 1980s. I had to instruct a service
managers at one of my local Toyota dealer as recently as last year to
take a logical approach to a problem. Mechanics these days do not work
by common sense or simple process of elimination. They are like robots
and work by what a computer or
manual tells them to do. My local Toyota dealer was going to completely
drain and replace the AC compressor in my 2018 Tacoma last summer cause
my system kept shutting down after a few seconds. Price out how much R1234YF Freon cost and you'll crap your self. Then you will see how much a
shop can
make by selling you a AC recharge with that expensive new Freon even if
they do
NOT do a recharge on the system, but charge you for it. You would never
know. Most vehicles made since 2018 have the new Freon. Anyways,
the dealer was going by the book/computer and going to rip into the
mechanical / refrigeration part of the system trying hang me with nearly
a $3,000 repair estimate. I laughed at them and asked why the hell are
you going into the compressor and refrigeration first? Its
obviously a electrical issue, not mechanical / refrigeration. I got the
service manager and took him to my truck and said watch this. I popped
the fuse / relay cover off the main box by the battery. Pulled the
relay for "CLUTCH" Its the relay the actually puts powers the compressor
clutch and engages it. I jumped the relay socket with a jumper wire and
the engine idled up and compressor kicked on and the system completely
cooled down to normal cooling temperature just above 40 degrees on a 85
degree day. I asked him to explain to me why you need to rip the whole
system apart when it clearly works when the compressor gets power and
engages? I told him the problem is up stream in the electrical from this
relay since its not getting any power to trip the relay to engage the compressor
clutch. He was like you kinda know a lot about how these things work. I
said actually I do since I have installed AC systems in every generation
Pre Tacoma Toyota truck over the last 35 years starting with my 1977
Truck in 1988 with my first AC system install to eventually to a 1982
4x4 truck then to a 1985 4x4, 1986, 1987 and 1991 models. Basic common
sense is what led me to jump the compressor relay and verify the $3,000
repair estimate was a bunch of crap. He then said let me get my best
mechanic on it that is a wizard with electrical and see what he finds. I
said now thats more like it. The dealer called me later that day and
said they found a loose wire in one of the plug sockets in the main dash
harness under the dash.
My repair estimate went from $3,000 to $190. SO, don't go saying my
mechanic said....... Go get a second opinion. ALWAYS. Especially if you
do not know much about what your looking at or doing. Fortunately I know
a lot about cars and often more then some of these idiot mechanics. Its
not to uncommon in auto repair settings I get someone recommending
services or repairs on stuff I know is just fine. Its so unfortunate
that 95% of car owners barely know how to drive them correctly let alone
know when a mechanic is selling them crap or repairs they don't need.
As for why I didn't try repairing this issue my self. Well a 2018 Tacoma
along with just about anything else made in the last 15 plus years
requires a lot of special specific tools and computer diagnostics.
Pretty much
why I let the dealer do the AC diagnostics on my 2018 Tacoma. It was
well worth it to me especially since I was smart enough to debunk that
$3,000 diagnostics estimate they came up with making them find the
actual issue of just a loose wire. At least your smart enough to be in a
Toyota. By all means NEVER choose any European brand or model. If you
must have one for some status ooh look at me reason. Buy or lease NEW
with a warranty then dump it immediately after the factory warranty
expires. Most owners of those brands lack much knowledge of cars and
reliability and buy for pure status and attention.
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