A new question is answered every 9 seconds

1998 Ford Escort SE: troubleshoot AC not working

This answer was rated:

In a little-used 1998 Ford Escort Wagon, where the AC hasn't worked for more than a year and, it appears that the AC clutch is not working (no visible spin), is the problem likely to be either the C147 CCRM module, or the REPC507801 multi-purpose relay, or either one? Is there a simple test (e.g., bypass, or voltage check) which can determine which of these is faulty, if not the compressor itself? Thanks for any help! -- EBSkolnick, Upper Marlboro MD

P.S.  I thought about checking freon pressure, in case it had leaked out below some safety cutoff relay setting, but have not yet done so; can a simple test like momentarily pressing in on a Schroeder-type valve stem (hi or low pressure side) indicate if the refrigerant pressure is still close to normal?

P.P.S.  Note alswo, I was already charged $29 on PayPal, not a $1.00 deposit...
Hello, My name isXXXXX will do my best to assist you.

I will honestly say before diving into a ccrm or wiring or sensor problem. you MUST know what the AC pressures are. The slightest drop in pressure say under 70/psi, engine and AC off, the compressor will NOT kick on

You can push the schrader but tells you nothing other than some freon in it. NO way to know if full as needed so compressor will come on

My thought>? you are low on R 134 ( freon)

I would get a simple DIY 134 kit at parts store. comes with a cheap type of gauge but surely will work for this. Hook it up, if not in the green zone? then add a can till in the green zone,.

I really am thinking low on 134

I dont want you to do all types of probing /tests etc only to find out low

No real simple test as the AC is computer controlled
Customer: replied 4 years ago.
I understand -- but I do need you to answer also, if the problem is not inadequate refrigerant pressure, how can I isolate it to one or another among the mentioned electrical relays? Internet postings suggest these could be the problem in a 1998 Ford Escort -- e.g., see URLs [http://wiki.answers.com/Q/Where_the_air_conditioning_relay_for_a_1998_Ford_Escort_Wagon_is_The_compressor_is_not_starting.] and [http://www.justanswer.com/ford/6w3w6-1998-ford-escort-se-troubleshoot-ac-not-working.html]...
Ok, yes,, the CCRM is a relay box up near radiator. its has several built in relays. fuel pump, PCM, cooling fan and compressor etc

its kind of a main relay box.

yes the CCRM can fail. We have replaced them,

Its not going to be a fuse problem as if any CCRM fuse blew, engine would not run
There is NO easy test for the CCRM

I am saying you MUST be sure pressures are up to specs. if so? and no compressor or fan? then you test the black/white wire leaving the CCRM with AC on

If power? then bad compressor clutch

if no power? then could be the CCRM has failed

You also have to be sure you have power through the pressure switches on the orange/green wire at low pressure switch on drier

that test for good or bad switch

So.. if you turn ac on.jump the low pressure switch on the drier. compressor should come on. If so? bad switch OR what I feel? low on freon

here is CCRM location

Randall C, ASE MasterTechnician
Category: Ford
Satisfied Customers: 12697
Experience: 35 years ASE Master Tech, Diagnostic , Electrical Specialist
Randall C and other Ford Specialists are ready to help you
Customer: replied 4 years ago.
Thanks, XXXXX XXXXX rating your service as "good" not "excellent", only because you did not comment on the alternative "multifunction relay" discussed at URL: [http://wiki.answers.com/Q/Where_the_air_conditioning_relay_for_a_1998_Ford_Escort_Wagon_is_The_compressor_is_not_starting.], which has left me a bit dissatisfied. But I'll follow your advice, to check pressure first...
Ask Randall C Your Own Question
Randall C
Randall C, ASE MasterTechnician
Category: Ford
Satisfied Customers: 12697
Experience:  35 years ASE Master Tech, Diagnostic , Electrical Specialist
Type Your Ford Question Here...
Randall C is online now
How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

What Customers are Saying:

  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
< Previous | Next >
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
  • Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me. Molly USA
  • I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service. Jason V. Kirkland, WA
  • I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there. BR New Jersey
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Meet The Experts:

  • Ron


    ASE Certified Technician

    Satisfied Customers:

    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguyu/2015-7-7_172556_onnieew.64x64.jpg Ron's Avatar


    ASE Certified Technician

    Satisfied Customers:

    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)


    Satisfied Customers:

    16 years experience
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Ford Technician

    Satisfied Customers:

    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar


    ASE Certified Technician

    Satisfied Customers:

    33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/BL/Bluegorilla/2012-6-21_16298_cam.64x64.JPG Cam's Avatar


    Journeyman Automotive Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years Automotive experience.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar


    ASE Certified Technician

    Satisfied Customers:

    12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.
  • http://ww2.justanswer.com/uploads/BA/baddad1/2014-4-1_23659_avatar.64x64.jpg Mike V.'s Avatar

    Mike V.

    Auto Service Technician

    Satisfied Customers:

    25 years experience on all makes and models, Licensed NYS Inspector.