Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 07-12-2011, 09:12 PM   #1
1991 supra guy
Stock
 
Join Date: Jul 2011
Location: alabama
Posts: 6
1991 supra guy is on a distinguished road
Default a/c clutch will not engage

I have a 1991 6 cylinder 5 speed supra. The a/c light comes on but a/c clutch will not engage, can anyone help me troubleshoot? Also where can i get replacement shocks that hold the hood up? thanks
1991 supra guy is offline   Reply With Quote
Old 07-12-2011, 09:59 PM   #2
SilverMK3
Stock
 
SilverMK3's Avatar
 
Join Date: Jan 2011
Location: Madison, AL
Posts: 9
SilverMK3 is on a distinguished road
Default Hood Shocks

You can get replacement hood shocks at Autozone, Orielly, or Advanced Auto for about $40 for a pair. It's well worth it to keep the hood off of your head.
SilverMK3 is offline   Reply With Quote
Old 07-12-2011, 10:04 PM   #3
1991 supra guy
Stock
 
Join Date: Jul 2011
Location: alabama
Posts: 6
1991 supra guy is on a distinguished road
Default

thanks I have visited Advance they do not have the hood shocks but do for the hatchback. I am looking for the hood shocks.
1991 supra guy is offline   Reply With Quote
Old 07-12-2011, 10:10 PM   #4
El Supracabras
3" Exhaust
 
El Supracabras's Avatar
 
Join Date: Feb 2010
Location: Chicago
Posts: 240
El Supracabras is on a distinguished road
Default

First check to make sure there is refrigerant in the system. If there is not enough or none at all, the compressor clutch will not engage. If the system is full, it could be a bad pressure switch. These are easy to test by unplugging it and jumping the terminals to bypass the switch. There are other causes for your problem but those 2 are the most common and would be the easiest to check. Also if the car has not been retrofitted for R134A refrigerant (originally uses R12), you may have trouble getting it serviced at some shops.
I got hood lifts from Pep Boys for around $40 for both with 2 year warranty. Could probably find cheaper ones but the ones I bought appeared to be of decent quality.
El Supracabras is offline   Reply With Quote
Old 07-12-2011, 10:16 PM   #5
SilverMK3
Stock
 
SilverMK3's Avatar
 
Join Date: Jan 2011
Location: Madison, AL
Posts: 9
SilverMK3 is on a distinguished road
Default Hood Shocks

Sorry, I thought that they had them at Advanced Auto Parts also. I bought mine at Orielly's, for $40 with a lifetime warranty. Try there.
SilverMK3 is offline   Reply With Quote
Old 07-12-2011, 10:18 PM   #6
1991 supra guy
Stock
 
Join Date: Jul 2011
Location: alabama
Posts: 6
1991 supra guy is on a distinguished road
Default a/c clutch

Thanks, first should the freon be visible in the circular window going to cannister in front of radiator? If there is non does advance carry a retrofit for the new freon? Also we do not have a pepboys here in alabama. But i may try to get a pair shipped. Where is the plug to bypass connection into the ac compressor? Thanks
1991 supra guy is offline   Reply With Quote
Old 07-12-2011, 10:30 PM   #7
El Supracabras
3" Exhaust
 
El Supracabras's Avatar
 
Join Date: Feb 2010
Location: Chicago
Posts: 240
El Supracabras is on a distinguished road
Default

No you will only see oil in there if the compressor is pumping. Retro fit kits are usually wherever the R134A is kept. Ask the counter person if you cant find them. You will also want to change the receiver/dryer (canister w/ window). There are 2 switches in the pipe going into the firewall just under the passenger side strut tower. I don't remember which is which but one controls the fan and the other is called a dual pressure switch (hi/lo), this one would cut out the compressor clutch if triggered by an incorrect pressure or if it was defective. Good luck.
El Supracabras is offline   Reply With Quote
Old 07-13-2011, 01:54 AM   #8
Sonyps307
Lexus & 550's
 
Join Date: May 2010
Location: Baltimore
Posts: 526
Sonyps307 is on a distinguished road
Default

Did Toyota switch to the r134a systems cause my 89 has the r134a fittings and not the r12 fitting. Unless The first owner did the refitting.
Sonyps307 is offline   Reply With Quote
Old 07-13-2011, 04:34 AM   #9
El Supracabras
3" Exhaust
 
El Supracabras's Avatar
 
Join Date: Feb 2010
Location: Chicago
Posts: 240
El Supracabras is on a distinguished road
Default

I believe all cars sold in the U.S. after 1995 use R134A. Anything before that would originally use R12 with possibly very few exceptions.
El Supracabras is offline   Reply With Quote
Old 07-13-2011, 11:27 PM   #10
speedfiend
Intake
 
speedfiend's Avatar
 
Join Date: Jul 2010
Location: Mobile, AL/ Iquitos, Peru
Posts: 36
speedfiend is on a distinguished road
Default

There is also a fuse block in the passenger kick panel with a 10amp fuse in it.
That's where my a/c issue was...
If you had a bad pressure switch or amplifier the a/c light would flash.
__________________
88 N/A targa, 5 speed, tint, thumpin' tunes, APEXi & KYB's, tweaked AFM, Hayden fan...

5 Favorite yodas I've owned, I am a believer!
85 Supra 5 speed, tint, sunroof
77 Celica GT, 20R, 5 speed, tint, cam, header, tweaked Mikuni S/Ds, K&N
91 DX & 99 LE Camrys, for when I did the family thing
86 1 Ton P/U, 22RE, SR-5 speed, tint, buckets, 500w stereo, header, alloys, tweaked AFM, K&N
86 4x4, 22RE 5-speed, tint, 4" lift, cam, header, tweaked AFM, K&N, bored .040
500 character limit...

Last edited by speedfiend; 07-14-2011 at 03:00 AM.
speedfiend is offline   Reply With Quote
Reply


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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Thermal Fan Clutch - 89 Turbo Supra kstewartnd MKIII Supra 0 10-04-2010 04:36 PM
Clutch kit for a 1993 JDM Toyota Supra SpRuCe Non-Generation Specific Questions 0 04-13-2009 10:20 PM


All times are GMT. The time now is 07:26 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87