2000 Grand Marquis AC fan control problem - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
» Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Crown Victoria | Mercury Marauder | Grand Marquis | P71
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto EscrowInsurance

Ford Crown Victoria | Mercury Marauder | Grand Marquis | P71 Forum for discussion of the Ford Crown Victoria, Mercury Marauder, Mercury Grand Marquis and P71.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 08-12-2010, 12:04   #1 (permalink)
Registered User
 
Join Date: Aug 2010
Posts: 3
2000 Grand Marquis AC fan control problem

Hello. When running the air conditioner in my 2000 Grand Marquis the speed of the fan varies irregularly no matter what speed the fan is set on. Could you tell me what type of problem this could be? The air is cold and there are times that the fan runs at the correct speed but it doesn't last for more than a half hour or so. At other times it seems to change every few minutes.
Thank you.
riley11598 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-12-2010, 12:53   #2 (permalink)
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 9,658
Re: 2000 Grand Marquis AC fan control problem

Does moving the switch around make it change when that's happening?
__________________
Bert
Bert is offline   Reply With Quote
Old 08-12-2010, 12:58   #3 (permalink)
Registered User
 
Join Date: Aug 2010
Posts: 3
Re: 2000 Grand Marquis AC fan control problem

No it doesn't.
riley11598 is offline   Reply With Quote
Old 08-12-2010, 14:34   #4 (permalink)
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 9,658
Re: 2000 Grand Marquis AC fan control problem

I forgot to ask, is it automatic climate control?
__________________
Bert
Bert is offline   Reply With Quote
Old 08-12-2010, 14:39   #5 (permalink)
Registered User
 
Join Date: Aug 2010
Posts: 3
Re: 2000 Grand Marquis AC fan control problem

It has the automatic button but I am not using that. I am using the normal a/c and the maxi a/c buttons. It does it with both of those.
riley11598 is offline   Reply With Quote
Old 08-12-2010, 17:01   #6 (permalink)
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 9,658
Re: 2000 Grand Marquis AC fan control problem

Try this test to see what you come up with.

Electronic Automatic Temperature Control Module Self-Test

The EATC module self-test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns.

The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to intermittent diagnostic trouble codes for concerns that occur during system operation. The vehicle interior temperature should be between 4º-32ºC (40-90ºF) when carrying out the self-test. If the temperatures are not within the specified ranges, false in-car temperature sensor DTCs will be displayed.

The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.

To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within two seconds. The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.

If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.

If a condition exists but no DTCs appear during the self-test, refer to the Symptom Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation.

To exit self-test and retain all intermittent DTCs, push the blue (cooler) button. The control will exit self-test, retain all intermittent diagnostic trouble codes and then turn OFF (display blank).

To exit the self-test and clear all DTCs, press the DEFROST button. The vacuum fluorescent display window will show 888 and all function symbols for one second. Then, the EATC control assembly will turn OFF (display blank) and all DTCs will be cleared.

Always exit the self-test before powering the system down (system turned OFF).

Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.
__________________
Bert
Bert is offline   Reply With Quote
Old 08-12-2010, 20:52   #7 (permalink)
Registered User
 
KStromberg's Avatar
 
Join Date: Feb 2010
Location: Minnesota
Posts: 281
Garage
Re: 2000 Grand Marquis AC fan control problem

The EATC is what first came to mind here also....
__________________
-1992 Ford F-150 (winter truck)
-1998 Lincoln Mark VIII LSC (fun car)13.591@101.72mph
KStromberg is offline   Reply With Quote
Old 08-13-2010, 13:01   #8 (permalink)
Registered User
 
Join Date: Mar 2007
Posts: 8
Re: 2000 Grand Marquis AC fan control problem

I had the same problem, then the whole fan system just died.

I contacted max at five star ford in AZ and he sent me a newer speed controller for cheap.

It was kinda a pain to change it, but the fan system works wayyyy better.
allkesh is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Ford Crown Victoria | Mercury Marauder | Grand Marquis | P71



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 -7. The time now is 06:08.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.