Expansion Valve: - 3000GT/Stealth International Message Center
3000GT/Stealth International 3000GT/Stealth International
 

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   3000GT/Stealth International Message Center > Automotive Discussions > New Owner Questions

3SI.org is the premier Mitsubishi 3000GT Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 06-04-2010, 05:47 PM   #1 (permalink)
Forum Member
 
Billy46's Avatar
 
Join Date: Mar 2008
Location: Harrodsburg Ky
Drives: 92 VR4
Billy46 is an unknown quantity at this point
Feedback Score: 2 reviews
Default Expansion Valve:

My freon pressures are in the normal range but is still blowing warm air.

I'm going to change the receiver/dryer and the expansion valve.

My question is how hard is it to change out the expansion valve?

If anyone has done this could you give me a step by step instructions?

Thanks
Billy46 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 06-05-2010, 04:14 PM   #2 (permalink)
Thermal Design Engineer
 
Alex3000GT's Avatar
 
Join Date: Aug 2005
Location: Indy
Drives: 91 Stealth RT/TT
Alex3000GT is an unknown quantity at this point
Feedback Score: 14 reviews
Default Re: Expansion Valve:

Well the dryer is right there on the driver's side and comes out with I think only two bolts. I'm not sure what an expansion valve is, but I also don't know a whole lot about A/C systems, haha.

I can tell you from thermo that an expansion valve is something that decreases pressure while keeping constant enthalpy. Anyway, just a bump so hopefully someone else can explain how to remove the expansion valve.
__________________

NG06 - DOHC NA - ATX --- 16.6 --- 85 MPH
NG07 - DOHC NA - MTX --- 15.7 --- 89 MPH 7.78 sec 0-60 3,044 lbs w/out driver
1992 3000GT
1991 Stealth
Cars & other stuff: http://axlesinfo.blogspot.com/
Alex3000GT is offline   Reply With Quote Quick reply to this message
Old 06-05-2010, 06:47 PM   #3 (permalink)
Forum Member
 
Billy46's Avatar
 
Join Date: Mar 2008
Location: Harrodsburg Ky
Drives: 92 VR4
Billy46 is an unknown quantity at this point
Feedback Score: 2 reviews
Default Re: Expansion Valve:

Thanks for the bump.
Billy46 is offline   Reply With Quote Quick reply to this message
Old 06-06-2010, 02:23 AM   #4 (permalink)
Mitsubishi Junkie
 
Joel_CA's Avatar
 
Join Date: Dec 2005
Location: NorCal / Sac
Drives: 2 Pearly Whites
Joel_CA Level 1Joel_CA Level 1
Feedback Score: 7 reviews
Default Re: Expansion Valve:

The expansion valve is tucked away right next to the evaporator (inside the HVAC unit behind the glove box area). Ive replaced an evaporator before on a 3000GT many years ago when i worked for Mitsubishi as a tech, but i don't remember the specifics about it. I was able to do it without removing the dash. Good luck!

JJ
__________________

1992 3000GT VR4 (tastefully modified) & 1996 STEALTH RT/TT #47 (restoration work in progress)
Joel_CA is offline   Reply With Quote Quick reply to this message
Old 06-06-2010, 01:06 PM   #5 (permalink)
Forum Member
 
marshallh's Avatar
 
Join Date: Feb 2008
marshallh Level 1marshallh Level 1marshallh Level 1
Feedback Score: 2 reviews
Default Re: Expansion Valve:

What kind of pressures are you getting.

Mine is r-134, just filled to about 42psi on low side, and 270 in high side. Cools really well.
__________________
marshallh is offline   Reply With Quote Quick reply to this message
Old 06-06-2010, 09:36 PM   #6 (permalink)
Forum Member
 
Billy46's Avatar
 
Join Date: Mar 2008
Location: Harrodsburg Ky
Drives: 92 VR4
Billy46 is an unknown quantity at this point
Feedback Score: 2 reviews
Default Re: Expansion Valve:

20 to 30 psi on low side and 100 psi on the high side. I just replaced the compressor which did nothing to help so I'm going to replace the reciever and expansion valve next. I have only owned the car since November so I don't how long since it has worked. I am also using r134a. Thanks for the responce.
Billy46 is offline   Reply With Quote Quick reply to this message
Old 06-09-2010, 11:17 PM   #7 (permalink)
Forum Member
 
Billy46's Avatar
 
Join Date: Mar 2008
Location: Harrodsburg Ky
Drives: 92 VR4
Billy46 is an unknown quantity at this point
Feedback Score: 2 reviews
Default Re: Expansion Valve:

Just to let everyone know. I just changed out my expansion valve, dryer/receiver and dual pressure switch. And now I have cold air!!!

Changing out the expansion was not bad at all. Only had to remove the glove box, the plastic above the glove box, the lower plastic shield above the floorboard and the brace that holds the glove box in place. Unhooked the wires, removed three bolts and unhooked the high and low pressure line under the hood. The unit came right out. All I had to do was take apart the evaporator and change out the expansion valve.
Billy46 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  3000GT/Stealth International Message Center > Automotive Discussions > New Owner Questions

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the 3000GT/Stealth International Message Center forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Free email addresses do not work(yahoo, hotmail, gmail,...)
We are currently being blocked by AOL so any AOL based address may not work(aol.com, aim.com, netscape.net, cs.com)
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 01:08 AM.




Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.3.2