Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-24-2009, 03:54 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Jul 2008
Location: St. Louis
Posts: 63
Thanks: 0
Thanked 1 Time in 1 Post
AC charge question for Geo

I tried searching, but get a bazillion links to either tire pressure, or removing the AC...



AC in my geo is cool, but not cold. I just got a manifold set to see what's going on.


It's 90 ambient, sunny, humid.... Air out of the vent is 65
High pressure at about 280psi....upped from about 220psi with same temp.

...where should it be?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-25-2009, 12:10 PM   #2 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Cookeville, TN
Posts: 850
Thanks: 1
Thanked 5 Times in 5 Posts
65 out of the vents is a little warm. . .But other than that it sounds about right.

Only suggestion is if you have a spare can of refrigerant lying around and are capable of refilling it you might wanna do that. It sounds like the refrigerant might be just a hair low(its got low volume to start with so a little bit might be enough to push it).

If I weer to guess I would say its maybe 2-3 ounces low and the compressor is reheating the gasses instead of the gasses cooling the compressor(yes its the same thing, but in once case the compressor is getting warmer and in the other the compressor stays at operating temps).

If you add a little. . .I would guess its R-12(?) not sure what year you are, it ought to drop down to around 50-55. It might be dead on at 65 since the geo is geared towards FE friendliness they might have intentionally designed it with a low yield compressor(also low load).
  Reply With Quote
Old 06-25-2009, 01:49 PM   #3 (permalink)
Grasshopper
 
alohaspirit's Avatar
 
Join Date: Feb 2009
Location: Hawaii
Posts: 964

Makai - '01 Toyota Echo 4D Auto
90 day: 34.45 mpg (US)

New Galaxy - '07 Toyota Prius
90 day: 42.15 mpg (US)
Thanks: 25
Thanked 30 Times in 25 Posts
what year

i believe the 95 and up accept R-134
__________________
Past Present Future?
  Reply With Quote
Old 06-27-2009, 02:04 AM   #4 (permalink)
Master EcoModder
 
Join Date: Sep 2008
Location: Texas
Posts: 632
Thanks: 0
Thanked 25 Times in 23 Posts
The correct way to check the charge is by checking superheat or subcooling.

Add some leak tracer so you can actually find the leak and fix it. Otherwise, you'll have to redo the fix from time to time.

__________________
If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...

Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Question about HOW a car AC works... hondaworkshop Off-Topic Tech 15 06-13-2009 12:55 AM
AC vs DC for DIY MazdaMatt Fossil Fuel Free 15 03-06-2009 10:33 AM
AC cooling off the engine?? Xringer Aerodynamics 16 08-21-2008 07:12 PM
AC on the entire time and I got my best MPG average ever?? regor Hypermiling / EcoDriver's Ed 12 06-24-2008 01:55 AM
AC Induction Motor used as Brushless DC? WaxyChicken Fossil Fuel Free 5 01-29-2008 10:26 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com