99 F-150 Odometer light Intermittant, ABS light on, and A/C antifreeze smell - Ford Truck Enthusiasts Forums



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99 F-150 Odometer light Intermittant, ABS light on, and A/C antifreeze smell

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Old 07-08-2009, 07:05 AM
Htoddyv Htoddyv is offline
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99 F-150 Odometer light Intermittant, ABS light on, and A/C antifreeze smell

I have 99 F150 5.4L with 173K miles. I have a couple of nagging problems.

1) Odometer light cuts off intermittantly then comes back on after a while.
2) ABS light comes on the second i touch the gas pedal. If i turn the car on and leave it in park it will not come on. But once it is in drive and I press the gas there it is.
3) I now have an antifreeze smell coming from my air vents and occasionally see fog coming out. This started in the mountains in low humidity and has not stopped now that I am back at sea level in high humidity.

Any suggestions.
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Old 07-08-2009, 09:23 AM
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Welcome to FTE Htoddyv!
  1. http://www.ford-trucks.com/forums/196821-odometer-blackout-problem-fixed.html
  2. Replace the rear ABS sensor on top of the rear differential.
  3. Your heater core is shot. http://my.voyager.net/~sscully/F-150...50_Exp_002.doc
Good luck!
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Old 07-08-2009, 10:25 AM
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On the antifreeze smell it sounds like the heater core has gone south.We have them available on or website if you would like to take a look at them.

Ford F-150 Heater Core
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Old 07-08-2009, 10:52 AM
Htoddyv Htoddyv is offline
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Thanks KingRanch and Tony. I'm a little nervous about doing the fix on my Odometer. Circuit boards are a little intimidating, but the fix looks easy enough. Unless I need a bunch of special tools the other two look doable. thanks again.
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Old 07-08-2009, 11:05 AM
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Quote:
Originally Posted by Htoddyv View Post
Thanks KingRanch and Tony. I'm a little nervous about doing the fix on my Odometer. Circuit boards are a little intimidating, but the fix looks easy enough. Unless I need a bunch of special tools the other two look doable. thanks again.
no problem at all,glad to hep out.
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Old 07-08-2009, 11:16 AM
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Quote:
Originally Posted by Htoddyv View Post
Thanks KingRanch and Tony. I'm a little nervous about doing the fix on my Odometer. Circuit boards are a little intimidating, but the fix looks easy enough. Unless I need a bunch of special tools the other two look doable. thanks again.

The odometer repair is not that bad to do, just get in there and get it done! The ABS sensor is a breeze. The heater core is the biggest job. Good luck!
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Old 07-08-2009, 02:53 PM
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How much are they and how do you tell if it is the abs sensor or something in the abs system? My light on my 2000 has been on constantly since I did the front brakes about 50K ago. Thanks.
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Old 07-08-2009, 02:57 PM
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How much are they and how do you tell if it is the abs sensor or something in the abs system? My light on my 2000 has been on constantly since I did the front brakes about 50K ago. Thanks.
You should get the codes read on you ABS system to determine what your problem is. Is the ABS light on constantly or is it blinking. If it is blinking, count the number of blinks for the two digit trouble code. Good luck!
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Old 07-08-2009, 03:44 PM
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Thanks. The abs light is on continuously. It doesn't give a code. I've read it a few times for things like an air cleaner and recently with the cut wiring harness but it hasn't given any brake codes. Thought maybe I did something when I changed the front brakes when it started. Guess I've never felt the abs system kicking in. Think I checked all the fuses and relays but I lost my book now so I don't know which one it is now.
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Old 07-08-2009, 03:50 PM
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Download a pdf version of your owners manual here.

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp
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Old 07-08-2009, 09:57 PM
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if the ABS llight comes on after in gear and moving over 5 MPH, then the speed pickup is not working on one of the fronts, or the center rear pumpkin area. If the light comes on as soon as you turn on the motor and dont go off (ssetting in the driveway), then you mashed the wire terminals putting the front connector together and it can not make contact. (light goes out after a continuity check- before you start moving).
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Old 07-09-2009, 12:06 PM
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Thanks. I'll check the front connector by the front wheels although I don't remember messing with any connectors when doing the brakes but I assume there must be a wire going to the abs sensor although I don't know where the sensor is but I'll look. Does the wheel have to come off to do this?

Don't know what you mean by what you say in parentheses about the light going out after a continuity check before you start moving. Mine never goes out.

Here is the sequence: 1. turn on ignition/key switch and yellow abs and red brake (brake spelled out) lights come on and then brake light goes out while abs light stays on. 2. Engage starter and the abs light goes off till engine started and starter disengaged by releasing the key switch. 3. After releasing starter on key switch, the abs and brake lights come back on and then the brake light turns off leaving the abs light still on till the engine is shut off again.
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