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REKER
Dodge Dakota
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7/30/2002
08:28:31
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 Subject: Not so Cool AC!!
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Well I drive a 2000 Auto 4X4 CC Dak and i noticed the other day that my AC doesnt get cold AT ALL. I tried both Settings, MAX AC and reg AC with the nob turned all the way BLUE and still nothing. It gets a tiny itsy bitsy cool but not enough to cool the inside of the truck. Does anyone know what my problem could be??... i dont know a single thing about AC units. My friend said maybe i need some Freon???... PLEASE HELP ME OUT, do u think i could take this to the dealership and get it fixed since its still under warranty???
Thanks in advance
ROB
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REKER
Dodge Dakota
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7/31/2002
11:11:40
| RE: Not so Cool AC!!
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SOMEONE PLEASE HELP!!!.. do u think the AC system needs to be "charged"????
thanks
ROB
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DAKOTAKIDD
Dodge Dakota
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7/31/2002
11:43:46
| RE: Not so Cool AC!!
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That would be a good place to start. Not sure if warranty will cover or not.
C..
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WallyR
Dodge Dakota
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7/31/2002
12:01:02
| RE: Not so Cool AC!!
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Sounds like you're low on refrigerant. Should be covered by the 3/36 warranty.
FYI-Freon was DuPont's trade name for R-12. The refrigerant in your system is known as R-134a.
Wally
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Clevite 77
Dodge Dakota
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7/31/2002
12:28:38
| RE: Not so Cool AC!!
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to add to WallyR's post if your not under your warranty, you can buy R134A cheap, and just add it your self.
it's the r-12 you need a licence to buy it
I got mine in high school
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JorDak
Dodge Dakota
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7/31/2002
12:35:25
| RE: Not so Cool AC!!
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R-12 is the good stuff. Now we have this R-134a that the bunny huggers pushed the industry to use.
You can get canisters of it at most auto stores and fill yourself as Clevite 77 said, it's kind of like a can of fix-a-flat.
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REKER
Dodge Dakota
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7/31/2002
13:09:08
| RE: Not so Cool AC!!
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So would it just be better off that i just go out and buy a can of R-134A and do it myself??.... If i do, does anyone know how much a can of this stuff is??, and how do i do it???.. I have a 2000 4.7L V8 4X4.
thanks
ROB
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Justin
Dodge Dakota
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7/31/2002
13:14:15
| RE: Not so Cool AC!!
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You should go and have your entire system checked...i live in NC and the Autologic here does it for $20. That way you dont start spending unneccasary money...my AC was doing the exact same thing...so i got it checked and it was the AC Clutch...
--Justin
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REKER
Dodge Dakota
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7/31/2002
14:15:13
| RE: Not so Cool AC!!
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oh... Theres a couple places around here that do AC Inspections for free. Ill stop by one and see what the problem is. How much are AC Clutches??
thansk
ROB
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J.D. Leddon
Dodge Dakota
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7/31/2002
17:57:47
| RE: Not so Cool AC!!
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If your truck is still under warrenty,take it to the dealer. If your losing freon you've got a leak somewhere. Plus if you don't know what you are doing you could damage the A/C system to where the warrenty will not cover it. Plus you could also hurt yourself in the process.
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Dak94
Dodge Dakota
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5/30/2003
12:44:19
| RE: Not so Cool AC!!
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Bought the recharge kit for 29 bucks has a gauge to measure low press of the system and that determines how much r134 to add Worked like a charm just follow directions
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00287RC
Dodge Dakota
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5/30/2003
13:20:27
| RE: Not so Cool AC!!
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R134a isn't bad, on average is only 2 degrees hotter than R12. You dont need someone to check it for you, pop your hood and look at the clutch on your sanden compressor. Have someone turn your AC on and see if the top plate on your clutch is grabbing the pulley...if it is then the mechanics of your system are fine, sounds to me like freon. Read your directions, hook up the gauges and see where you are at. If you do put in a can be sure to tap the can in the middle or near the bottom because the freon will accumulate at the bottom of the can as it is released into your line.
Of course if your truck is under warranty let the dealer do it. It is illegal to release freon in the atmosphere.
If anyone needs R12...30lb drums for $500.
R143a I can get for $2.00 a can.
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fastdak
Dodge Dakota
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5/30/2003
23:56:27
| RE: Not so Cool AC!!
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had the same problem on my brother's 2001 dak he had a blown seal it was covered by the warranty.
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tek
Dodge Dakota
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5/31/2003
07:45:39
| RE: Not so Cool AC!!
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Recharge kits and R134 are cheap at wally-mart or any auto store, but if your system is low on refrigerant there is a leak...
If the system is very low or empty there is a low pressure switch that will shut down the compressor to prevent damage to it.
The refirgerant doesn't just get used up or dissappear. You need to get the system checked out the leak could be anywhere, any reputable shop will not just fill it, there are business legal reasons for this, the stuff is bad for the atmosphere.
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another tek
Dodge Dakota
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5/31/2003
11:20:48
| RE: Not so Cool AC!!
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freon does not break down , it's in a closed system in a vacuum ...........Like the tek above said , if it's low , there's a leak .............Find it and fix it , could do harm to compressor due to low freon and pumping out oil out of crankase , on cars don't know but oil seems to travel with the freon alot , but there's a leak ..................
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Lab Rat
GenIII
5/31/2003
22:31:51
| RE: Not so Cool AC!!
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"freon does not break down"
Really?? How do you explain phosgene??
"it's in a closed system in a vacuum"
Hmmm...and that's why there is positive pressure in the system...check your gauges.
"pumping out oil out of crankase"
Sanden compressors have no crankcase to speak of; meaning there's no sump as in others.
"oil seems to travel with the freon alot"
Depends on the conditions. You're referring to OCR, Oil Circulation Ratio. Different operating conditions will dictate how much oil is circulating and how much remains in the compressor.
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00287RC
Dodge Dakota
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6/01/2003
01:13:36
| RE: Not so Cool AC!!
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correct, sanden's consist of a rotating bearing with either 5 (SD5) or 7 (SD7)rods signifying how many cylinders it has. The head has valves similar to car but there is no real crankshaft. Most sandens take 5-7ounces of oil.
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Lab Rat
GenIII
6/01/2003
15:01:14
| RE: Not so Cool AC!!
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Actually the valves rival those in some two cycle engines and commercial semi-hermetic pumps. More commonly known as reed valves.
How many cylinders are there in a Sanden TR compressor???
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00287RC
Dodge Dakota
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6/01/2003
15:23:48
| RE: Not so Cool AC!!
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I'm not sure about a TR without looking at a chart but I know the sanden on my 00 dak is a 5cylinder
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Lab Rat
GenIII
6/01/2003
15:27:42
| RE: Not so Cool AC!!
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Can't be...Sanden hasn't sold SD5s to Chrysler since 1981 (L bodies with VW engines). Check the label, should say SD7H15.
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another tek
Dodge Dakota
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6/01/2003
17:48:38
| RE: Not so Cool AC!!
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freon is put in the system after the system is vacuumed out , that's what I meant , so there is not supposed to be any air or moisture in the system that can cause breakdown of bearing , valves etc ..... Phosegene gas occurs when freon comes in contact with fire or in a comercial
(conventional)unit with the windings breaking down in the compressor . The cranckase I was't to sure about that in a car system, that's why I wrote that I wasn't sure . Freon in it's normal usage of a system , with out going into high or low pressure should not breakdown .......Of course there is positive pressure , you put freon in the system ........ Now the real reason of the post , LOW FREON MEANS THERE IS A LEAK no matter how you put it or if whatever I wrote above is wrong , that one you gotta give me ..........
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00287RC
Dodge Dakota
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6/01/2003
18:43:55
| RE: Not so Cool AC!!
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mine isn't a SD7 and its not labeled an SD5 either, but its a 5 cylinder I know by the casing, my father's company builds custom sandens for airplanes with modified pullies for 0 and negative G's.
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Lab Rat
GenIII
6/01/2003
19:00:53
| RE: Not so Cool AC!!
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another tek,
right you are, moisture/air creates hydrochloric or hydrofluoric acid that can do some nasty things to systems. gotta be a leak.
00287rc,
i take it you have a 4.7 (287 CID??). if that's the case, i still have to contest. that block configuration is only available from sanden in the SD7.
if, in the case you have an ear mount compressor, it could be an SD5. can you send me a pick?? i'll ID it for you if you can.
btw, i joking about the TR's number of cylinders. it's a scroll comp and has compression pockets, not cylinders.
who does your dad work for??
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TECH
Dodge Dakota
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6/01/2003
19:43:13
| RE: Not so Cool AC!!
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There are so many things that can cause the ac to not cool well. Going out on a limb and guessing isn't what you should do.
Say the refrigerant (r134a) charge is low. You have a leak, so it needs to be fixed. Look for oil on the lines under the hood, likely at the expansion valve on the firewall. Find oil, you have your leak. If the system is opened, it MUST be vacuumed out to remove air and moisture, and recharged.
Your electric fan, if equiped, or the mechanical clutch on the engine fan may not be working. If you don't have enough airflow through the condensor, it won't cool. If it cools better while going down the road, check the fan (s).
If the compressor isn't engaging, it could be low on charge. The pressure switch is there to disable the clutch if the charge gets too low, to prevent compressor damage. Or the switch could be bad, or many other things could be the culprit.
Just adding "freon" isn't recommended. How do you know how much is in the system already? What if you overcharge it. It still won't cool right.
Have someone that knows what they are doing look at it.
If it's under warranty, the dealer will fix it under warranty. And they should know what to look for being that they see those vehicles day in and day out. They have their own characteristics.
Good luck.
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00287RC
Dodge Dakota
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6/01/2003
20:02:34
| RE: Not so Cool AC!!
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My father's company is called Airpro, Inc., we are in mesquite texas. Most of our business is wholesale A/C parts usually for big truck and off-road equipment...aftermarket and stock applications, but we also do quite a bit of automotive. We sell a lot of Red Dot and Kysor. We buy anywhere from 100-300 sandens a week.
Anyways, if I had a camera I'd take a pic to show you that it is a 5 cylinder.
We also have about 20 sandens that are for 98-00 electric Ford rangers built only in california. They are clutchless and run on an electric motor built internally into the casing. Pretty sweet actually, I think the dealer prices them at $1500 a piece. I've sold some of them to old gearheads who wanted to put them on their race cars and not pull from the motor...just mount them on the firewall. They aren't in our price book because we got them by accident when we had a contract with Ford a few years ago.
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TECH
Dodge Dakota
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6/01/2003
20:02:35
| RE: Not so Cool AC!!
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Oh, and if you mess something up on the ac, and it's under warranty, the dealer may deny the repair claiming that you damaged it.
Something to think about.
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Lab Rat
GenIII
6/01/2003
23:27:26
| RE: Not so Cool AC!!
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00'
Aipro??!!
What a small world...tell that big meathead Jeff in sales that I said "Hello". Known some others over there as well.
Anyway, if your compressor looks like this, it might be an SD5:
http://www.sanden.com/lib/drawings/4523/index.html
That's an ear mount. If yours is a direct mount, it's not an SD5. Sanden never made a direct mount SD5 in the USA.
What engine do you have? If it's a 4.7, does the compressor mount in the OE location? Borrow a camera, I wanna see what you're talking about.
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00287RC
Dodge Dakota
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6/02/2003
13:22:57
| RE: Not so Cool AC!!
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yeah i'd say you are about right calling Jeff a meathead, that dude is HUGE! One of them kinda guys that has his arms drag the ground, lol. Heck he's got two 15yr old boys that are bigger than most of the guys that work there, haha. I've worked there for 5 years on and off between school and i'm only workin for a month this summer.
Yeah my truck is a 4.7, I ordered it from a dealership in Kansas back in 00. I might get my friend's camera later this evening and take a pic, i'll let you know if I do.
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