• Register Today It's free! This box and some ads will disappear once registered!

^^Searches ExplorerForum.com^^

1996 A/C Clutch Engaging Issue


Fahnessin

New Member
Joined
April 7, 2020
Messages
4
Reaction score
0
City, State
Forsyth, Ga
Year, Model & Trim Level
1996 Explorer Eddie Bauer
Hello,
I am having an issue with my a/c clutch not engaging on my 1996 Explorer Eddie Bauer with around 180,000 miles. The a/c clutch will only engage when I jump the pins in the relay within the power distribution box. I am not exactly sure about these numbers but I believe they are the 86 pin and the 87 pin. If you are looking as if in the driver's seat it is the pin on the right side connected to the pin in the middle.
I have recently checked fuses and the relay works when switched with alternatives.
I have replaced the entire compressor. I have replaced the accumulator. I have replaced the orifice tube. I replaced the R134a while system was on when jumped.

Everything works when jumping those pins and the a/c is blowing cold. When I replace the jump with the relay the compressor disengages. Please help me find a solution; the idea of another summer in Georgia without a/c is keeping me up at night. Thank you for your time.
 


Join the Elite Explorers for $20 per year. Gets rid of the ads! New $5 per month "try out" option.

Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself and learn which modifications work without having to experiment on your own. Elite Explorer members see no advertisements, no banner ads, no double underlined links, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create and save more private Conversations, and more. Join Today. Your support is greatly appreciated.




drakon543

New Member
Joined
March 21, 2020
Messages
42
Reaction score
13
City, State
Tannersville
Year, Model & Trim Level
2007 mountaineer luxury
could be one of the high or low pressure switches. if the switch is bad it will make the system think there is a problem and wont allow it to run. also when you replaced the compressor did you refill it yourself or did you have a shop do it. im not overly familiar with a/c systems especially on your ford but if the system isn't charged correctly it might not work. the systems are purged and then a vacuum is applied before it starts actually charging. far as im aware you can't just recharge them with those diy cans when the system has been opened.
 




Fahnessin

New Member
Joined
April 7, 2020
Messages
4
Reaction score
0
City, State
Forsyth, Ga
Year, Model & Trim Level
1996 Explorer Eddie Bauer
I purged the system with the help of a mechanic friend who is semi-familiar with a/c systems. We recharged the system with the vacuum. Everything works as designed when jumping the pins but not with the relay so I am assuming the high and low pressure switches are working. Perhaps I am wrong to assume that. How can I test to ensure both switches are in working order? Thank you for your time.
 




8TZX

New Member
Joined
July 11, 2006
Messages
26
Reaction score
5
City, State
St Louis, Mo
Year, Model & Trim Level
99 XLT AWD
Om a 99 5.0, The high and low pressure switch circuits are in series with the AC Relay coil. If your jumper is across the COM and NO contacts of the relay then you are bypassing both high and low pressure switches and the clutch will engage without any safety circuits. You might try and test both the low and high pressure switches one at a time. Disconnect the low pressure switch and install a jumper between the two pins. See if the clutch engages. If not, reconnect the low side and disconnect the high side and install the jumper. You said you charged the system. Did you note what the low and high pressure readings? FYI, the low pressure switch is normally open at or below 24.5 psi, closed at or above 43.5 psi. The high side pressure switch is normally open at or above 430 psi and and closed at or below 250 psi. If you have to replace either switch, you do not have to evacuate the system as they have a schraeder valve.
 




ThreeJs

Active Member
Joined
February 24, 2014
Messages
392
Reaction score
49
City, State
Las Vegas/Henderson NV
Year, Model & Trim Level
96 EB Explorer 4x4
When my A/C stopped working it was the EATC unit. Right around 180K also.


If both high/low pressure switches check OK try jumping 12V to compressor.

Quote Aug. 30, 2018:
"I have a 86 EB Explorer.
My AC stopped working a few weeks ago. I'm in Vegas so it's been HOT!
Took to work and had it checked. System was full. No power to compressor or at low pressure switch..Tech said somewhere in the dash. I needed to leave work early that day so I asked if we could just get it to work somehow.
We hotwired the compressor to battery positive terminal and AC works. I've since hooked the AC power wire to a keyed ignition source so I didn't have to keep disconnecting the power wire everytime I parked.

I think it may be the EATC module but will look into it after the weather cools down. "
 




Fahnessin

New Member
Joined
April 7, 2020
Messages
4
Reaction score
0
City, State
Forsyth, Ga
Year, Model & Trim Level
1996 Explorer Eddie Bauer
I thought that was the case...I was pretty sure that the jump was bypassing the switches but I was not sure thank you for the clarification. I have jumped the low pressure switch with the relay in and the clutch did not engage. I will try the high pressure switch tomorrow and post my findings.
Also I did not check the readings on either switch; I will also do this tomorrow.

I have been reading some posts about the EATC unit causing issues as well. I will try your suggestion and repost.
Thank you for your time.
 




8TZX

New Member
Joined
July 11, 2006
Messages
26
Reaction score
5
City, State
St Louis, Mo
Year, Model & Trim Level
99 XLT AWD
I thought that was the case...I was pretty sure that the jump was bypassing the switches but I was not sure thank you for the clarification. I have jumped the low pressure switch with the relay in and the clutch did not engage. I will try the high pressure switch tomorrow and post my findings.
Also I did not check the readings on either switch; I will also do this tomorrow.

I have been reading some posts about the EATC unit causing issues as well. I will try your suggestion and repost.
Thank you for your time.
See attached wiring diagram from the 99 factory wiring diagram manual.
Good luck
 

Attachments





ThreeJs

Active Member
Joined
February 24, 2014
Messages
392
Reaction score
49
City, State
Las Vegas/Henderson NV
Year, Model & Trim Level
96 EB Explorer 4x4
Just a FYI also........The early 2nd gens used a different EATC than later years.
Explorers have different EATC units. One for 95-97 Explorers and one for the later 98-up and they are not interchangeable

 




masospaghetti

Elite Explorer
Joined
October 22, 2006
Messages
1,418
Reaction score
109
City, State
Huntington Beach, CA
Year, Model & Trim Level
98 XLT, OHV, 4D, 4x4, 5M
I've had issues with a bad shraeder valve in the accumulator port for the low pressure switch. It caused the same issue as you described. I removed the bad valve from the port and everything worked as designed.

Of course, if you do this, you'll lose all of your refrigerant if you ever remove the low pressure switch.

Check the low pressure switch to see if it has continuity or not.
 




Summajet

Member
Joined
February 7, 2019
Messages
50
Reaction score
7
Year, Model & Trim Level
2000 Mercury Mountaineer
Have you tried a jumper wire at the cycling switch located near orifice tube?
 




Thread starter Similar threads Forum Replies Date
B 1996 V8 AC clutch Stock 1995 - 2001 Explorers 0
T 1996 EB 4x4 indicator lights Stock 1995 - 2001 Explorers 1
M Sealing lower intake manifold 1996 4.0 OHV Stock 1995 - 2001 Explorers 3
J 1996 Explorer Limited stereo system Stock 1995 - 2001 Explorers 1
S 1996 Explorer V8, 2WD intermediate steering shaft. Stock 1995 - 2001 Explorers 1
K 1996 explore xlt-stuck caliper Stock 1995 - 2001 Explorers 2
S 1996 Explorer 5.0 Drivers Side Exhaust Manifold Removal Stock 1995 - 2001 Explorers 9
Z 1996 explorer 4.0 engine compatibility Stock 1995 - 2001 Explorers 4
D 1996 with broken Door Pulls Stock 1995 - 2001 Explorers 8
B 1996 explorer surging at idle Stock 1995 - 2001 Explorers 1
B 1996 explorer surging at idle Stock 1995 - 2001 Explorers 21
D Need a replacement column-mounted shifter boot for a 1996 XLT Stock 1995 - 2001 Explorers 16
M Best shocks 1996 RWD explorer Stock 1995 - 2001 Explorers 5
G 1996 5.0 xlt explo Stock 1995 - 2001 Explorers 1
D New "to me" 1996 Ford Explorer XLT 4.0l 4WD Stock 1995 - 2001 Explorers 9
1 1996 V8 Awd double cardon rebuild Stock 1995 - 2001 Explorers 4
G 1996 5.0 xlt explorer tapping noise Stock 1995 - 2001 Explorers 4
D 1996 Explorer Limited - Deer collided and set off airbag Stock 1995 - 2001 Explorers 2
J 1996 Ford Explorer Control Head (Dash control unit) F67Z19980BC Stock 1995 - 2001 Explorers 8
J 1996 Explorer V8 AWD drive train Stock 1995 - 2001 Explorers 20
K 1996 Explorer AWD replace left CV axle how to Stock 1995 - 2001 Explorers 2
O 1996 XLT airbag code 12 Stock 1995 - 2001 Explorers 0
F 1996 Explorer5.0 awd Won't start with key Stock 1995 - 2001 Explorers 2
E 1996 explorer slowly losing brake fluid 88 k miles 4.0 ohv Stock 1995 - 2001 Explorers 5
T 1996 EB Explorer EATC Stock 1995 - 2001 Explorers 22
T 1996 cam sensor issues Stock 1995 - 2001 Explorers 12
S 1996 Ford Explorer roof rack rails - removal tips? Stock 1995 - 2001 Explorers 11
T 1996 ford explorer transmission issue Stock 1995 - 2001 Explorers 1
T 1996 ford explorer Stock 1995 - 2001 Explorers 4
E 1996 explorer v6 radiator leaking suddenly Stock 1995 - 2001 Explorers 9
turboexplorer How can I disable auto lock on 1996 5.0L XLT? Stock 1995 - 2001 Explorers 4
T 1996 Explorer Speed Sensor Part Numbers Stock 1995 - 2001 Explorers 11
P 1996 Ex Sport OHV head gaskets replacement Stock 1995 - 2001 Explorers 50
P 1996 explorer sport tail "sway" on bumps Stock 1995 - 2001 Explorers 12
A 1996 Explorer - Seat Compatibility Stock 1995 - 2001 Explorers 2
T 1996 EB EATC climate control module part # Stock 1995 - 2001 Explorers 0
J 1996 Ford Explorer needs to go asap. Stock 1995 - 2001 Explorers 7
R 1996 Explorer speedo Stock 1995 - 2001 Explorers 11
P 1996 Explorer 4.0L Fluctuating Thermostat Stock 1995 - 2001 Explorers 3
R 1996 Explorer Stock 1995 - 2001 Explorers 3
J 1996 XLT, acts like no Battery on key start. Stock 1995 - 2001 Explorers 5
L 1996 Ford explorer 4x4 cranks but won't start Stock 1995 - 2001 Explorers 2
S 2001 to 1996 steering wheel swap ? Stock 1995 - 2001 Explorers 3
M 1996 Sport - 4.0 OHV Coolant Leak Stock 1995 - 2001 Explorers 8
G fuse 25... gem and speedometer 1996 explorer xlt Stock 1995 - 2001 Explorers 2
D 1996 Ford Explorer - Been Sitting. Stock 1995 - 2001 Explorers 10
P 1996 explorer sport collecting heavy dust from the trunk Stock 1995 - 2001 Explorers 3
P 1996 explorer With A p0761 Code Stock 1995 - 2001 Explorers 0
T 1996 EB fog lights upgrades? Stock 1995 - 2001 Explorers 7
P 1996 5.0 dipstick guide and air intake Stock 1995 - 2001 Explorers 3
Similar threads


















































Top