Question about Ford E-350

Open Question

1989 e-350 ford van. Just recharged the A/C

1989 e-350 ford van. Just recharged the A/C system and now the compressor stays on continuously in both the "A/C" and "Max" settings- will not cycle. Does anybody know if that is a bad sensor, switch, etc.

Posted by on

  • 1 more comment 
  • tom_porter Aug 01, 2009

    It is the 7.5 gas engine with only front A/C. We switched the fittings from the R-12 system, evacuated, and refilled with approx 3.5lbs of R-134A.
    It cycled during the first lb. but then just stayed on. The scale was malfuctioning a bit, so it may be overcharged. The pressure readings were 350lbs on the hi side and 40 on the low.

    thanks for your help!

  • tom_porter Aug 01, 2009

    7.5l gas engine, front A/C only. We did a retro-fit, evacuated the system, and installed 3.4 lbs of R134. The low pressure switch is not bypassed. After we put in approx. 1lb of R134 the compressor was cycling, but now is just on all the time. The pressure reading is 325-350psi on the hi side and 60 on the low side. It may have been overcharged because the scale were using gave some odd readings early in the installation of the R134.

  • Roger Foster May 11, 2010

    Hello tom_porter: MY name is Roger and I will help you. First need to know a few things.What size motor? Does this van have front and rear A/C? What kind of freon did you use? If the system was over charged. The A/C will not cycle. Has any one by-passed the low pressure switch. If you converted the R 12 system to R134A you will need to reset the low pressure switch also. I will help further after you reply to questions. Thank You for using Fix Ya. Roger

×

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

MrScary66613
  • 1990 Answers

SOURCE: 05 Jeep liberty- A/C compressor runs in all phases

This is Common. The Compressor will run even on Heat settings. It is simply Priming for actions that the Owner could Initiate. Not a big Problem.

Posted on Jan 24, 2009

Molson02536
  • 3854 Answers

SOURCE: A/C compressor cycles on/off

You could have a slow leak and the system is low on R134 and soon will stop running. The other thing to look for is the relay to the A/C compressor and switch it with an other relay or just replace it since there not that expensive. The pressure switch is an easy replacement to do, you just have to be quick so you don't lose all the R134 out of the system. Recap, recharge the system and get a proper reading on your high and low side A/C lines. To much R134 will also give you the same problem. Good luck and hope this helps.

Posted on Jun 04, 2009

  • 6 Answers

SOURCE: AC Compresser turns off and on every 5 to 10 sec.

A ac compressor will cycle like that if you are low on r134

Posted on Jul 17, 2009

localwonder
  • 6784 Answers

SOURCE: 1998 Ford Explorer a/c not working properly

HI. Here is a complete check list that will help you trouble shot this issue. You will find the problem in one or more of these areas stated below.

1. Check Drive Belts - The air conditioner utilizes a drive belt that supplies power to rotate the compressor, which is basically a refrigerant pump. If the belt fails the compressor has nothing to drive it, inspect and replace as needed to restore operation. If belt is intact proceed to the next step.

2. Check for Compressor Clutch Engagement - Turn the air conditioner to the "on" position and set controls to the coldest setting. Start the engine and allow to idle. Then open the hood and inspect the clutch at the front of the compressor, is it turning? "Engaged" if so, the system has enough refrigerant to activate. If the system is low on refrigerant it will not work properly. In this case an air conditioner recharge kit is needed to recharge the system. If the system is low on refrigerant it could cycle on and off, making a ticking noise. If the compressor clutch is not turning proceed to next step.

3. Inspect for Refrigerant Leaks - If the system has a large leak and no refrigerant remains it will not activate. First test system for a static pressure charge, with the engine off attach an ac gauge to the low side pressure port and check the state of charge. Depending on outside temperature there should be between 50 psi and 80 psi. (Cool and warm). A refrigerant leak detector is needed to inspect for leak, but if you do not have a leak detector there is an alternative method. The air conditioner system is designed to run with oil suspended in the refrigerant to lubricate the system. Check for oily residue outside the system by inspecting all hoses, compressor, condenser, evaporator or receiver drier and replace any component that has failed.

4. Inspect Fuses - Check under dash panel and under hood power distribution center. Replace failed fuses as needed, recheck system. If the new fuse fails when reinstalled a short circuit is present and requires diagnosing with a wiring schematic, follow circuits to locate short, repair as needed and recheck system.

5. Check Temperature Control Vents - The vents inside your car are controlled by a cable, electrical servo or vacuum servo. If the temperature blend door is not functioning properly it will cause warm air from the heater to exit the vents. To check this start the car and allow the engine idle, next turn the blower motor speed on low, switch the temperature control from warm to cold while your ear is close to the vents. You should hear the door move inside the heater box as it swings from open to close. If not, insect for a vacuum leak or a shorted motor in the servo, repair the leak or replace the servo motor.

Posted on Aug 27, 2009

  • 72 Answers

SOURCE: 99 plymouth grnd vygr van- installed new ac still don't cool

Your problem could be the blower fan relay or control modual that is bad have both checked iut.

Posted on Sep 16, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do I replace the compressor on a 1999 Ford F250


Hi Sherwood, Im glad to help!

Sherwood, A/C Compressor;s are easy to change, it's the Freon part that makes it impossible for people that doesn't have the proper equipment to evacuate and recharge the system that stops them from doing the job. Give me a call Al 314-374-5218. You can't release the Freon into the atmosphere. Once the Freon is removed from the system take the belt off, unplug the electrical connector, remove the Low and High side lines from the compressor then remove the 4 bolts that hold it to the engine, reverse the procedure for the new compressor and evacuate and recharge the system and your done. Hope this helps and have an awesome day Sherwood.

Jan 28, 2013 | 2001 Ford F250 Super Duty Super Cab

1 Answer

Had the compressor replaced on 2003 Ford Taurus, A/C was recharged, but today it only blows out warm air.


have the AC tech performed a leak test on the system after recharging? is the expansion valve and filter drier as well as the o-rings for the fittings replaced? check also for possible leaks in the system in the fittings of the hose and in the evaporator housing. also check if the magnetic clutch of the AC compressor is engaged, you will hear a click when it it engaged.

Sep 08, 2011 | 2003 Ford Taurus

1 Answer

MY AC ON 2003 FORD MUSTANG BLOWS HOT AIR AND DONOT HAVE OWNER MANUEL TO SEE IF FUSE BLOWN


The most common cause for an AC blowing hot air is the system is low on refrigerant. A small leak will eventually lose refrigerant until the compressor eventually will shut down. Most compressors require a minimum of 20psi to engage and chill the air. Most certified service stations can diagnose and recharge most systems for $100-150 depending on where the leak is. There are do it yourself kits available at most auto parts stores that come complete with leak detector (R-134A with dye to show where leaks are) compressor oil, and a recharge hose.

Aug 31, 2011 | 2003 Ford Mustang

1 Answer

I am recharging the AC System but the system is not pulling from the can. IS it possible for the system to be fully charged, but another component to failing and the system does not need charged?


what you can do is remove the connector from the low pressure switch. it is located on the line where you connect the can of refrigerant when recharging. probably near the accumulator bottle or directly attched to it. jumper the contacts in the connector with a paper clip. this will keep the compressor on in order to draw the refrigerant into the system. operate the compressor in 15 second intervals on and off. when the can stars to get cold plug the connecter back into the switch. if the compressor cycles your ok. continue untill the can is empty. if the compressor doesn't cycle, continue following the procedure. if the compressor still doesn't cycle, you may have a large leak. also your system is probably almost empty and requires repair and professional care. a/c systems require a good deal of knowledge and i would recommend having a professional take care of the problem.

do this at your own risk as there may not be enough oil in the system and the compressor could be damage

May 31, 2010 | 2001 Ford Windstar

2 Answers

Compressor doesnt run.


There is a pressure switch on the accumulator. The compressor cyles according to the low pressure reading at the accumulatror. If there is low refridgerent pressure the switch stays "OFF" and wont turn ther compressor on. Whan a system is low, there will be rapid cycling of the compressor, (on and off every few seconds). When the system is charged with the correct amount, the pressure is related to the temperature of the refridgerent. The compressors are common to leak. So it it doesnt leak, or make knocking noises, the compreesor MAY be good, but a pressure gauge will tell you if the compressor is good or bad. If you keep having to charge it, thats bad, and there is a leak. You will need to find and repair the leak, replace the drier (accumulator) , and recharge the system.

Nov 09, 2009 | 1997 Ford Explorer AWD

1 Answer

My 2004 ford e150 Sherrod package van has terrible ac


Hi, first, locate your a/c compressor under the hood. With the a/c on, check the compressor to see if it is "cycling" meaning the compressor clutch engages and disengages. This is easy to see, just look at your a/c pulley connected to your serpentine belt. If the 3 studs on the outside of the pulley spin and stop spinning, this is what is called cycling. Too much cycling (turns on and off frequently) means you are low are refrigerant, most likely r-134a. Eventually EVERY a/c system on a vehicle will leak due to vibrations and o-rings shrinking from outside elements. Some systems have small pinhole leaks which require an a/c recharge. BUT before assuming you need a re-charge, make sure your electric fan is working!!! The same problem will happen as you describe if your electric fan is not working, or if your electric fan has multiple speeds and one of the speeds is not working. Since you are feeling cool air, your system does NOT have a major leak, if it did, your compressor would not turn on due to no refrigerant in the system.

Jul 27, 2009 | 2004 Ford Econoline

1 Answer

AC Compresser turns off and on every 5 to 10 sec.


A ac compressor will cycle like that if you are low on r134

Jul 17, 2009 | 2002 Ford Taurus

1 Answer

I need to recharge the 134A A/C dual system in a 1999 3.3 litre Dodge Grand Caravan. Most if not all of the oil was probably lost when the van hit a deer. The high side line was broken as was the...


Most of the oil should be in your compressor, if the compressor was not damaged and not replaced you should be ok on oil other than recharging it with a 134 w/oil. That should be sufficient. Usually there is about 8 oz put directly into the compressor when replaced. In that vehicle I believe it should alos be recharged with 32 oz. of freon.

May 13, 2009 | 1999 Dodge Grand Caravan

1 Answer

Air conditioner compressor clutch went out twice


The air conditioner turns on even when you don't use it. Like anytime you have your defrost on, it helps dry the air inside of your vehcile. So by letting the leak continue the clutch turns on then off on then off over and over instead of just kicking in and staying on. Yes, if you don not fix the problem it will continue. I wish I had better news for you.

Stan

Dec 26, 2008 | 1996 Chevrolet Express

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

258 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

75066 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

fordexpert

Level 3 Expert

5470 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...