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Help please

Old Oct 16, 2014 | 09:11 PM
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Jerry SD 1999 7.3's Avatar
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Help please

I have a 1999 f250 7.3 l extended cab 4x4 super duty Need some help with abs light on ,over drive light flashing ,and speedometer has stopped
working .I have replaced abs senor on the rear of transmission and on the rear end.both new and just replaced abs module just the computer not the pump that was used . And abs light ,overdrive light are still on and the speedometer is still not working .I need some help please . and thanks for any help you all will give me .
 
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Old Oct 16, 2014 | 11:27 PM
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Originally Posted by Jerry SD 1999 7.3
I have a 1999 f250 7.3 l extended cab 4x4 super duty Need some help with abs light on ,over drive light flashing ,and speedometer has stopped
working .I have replaced abs senor on the rear of transmission and on the rear end.both new and just replaced abs module just the computer not the pump that was used . And abs light ,overdrive light are still on and the speedometer is still not working .I need some help please . and thanks for any help you all will give me .
Sounds like your 4r100 needs some work with the o/d light blinking. Symptoms?

I know the speedo's wiring system will fail after many years. Lots of threads here to remedy.
 
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Old Oct 17, 2014 | 12:21 AM
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With all that going on there will be codes you need to have them read to find out what the problem really is you may also want to start checking all the wiring harness for chaffing, an auto parts store may not be able to read the trans codes but may still give you a starting point. Post up what codes you pull.
 
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Old Oct 17, 2014 | 07:11 AM
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Mine did the same thing one time.....cleaned the sensors and finally found a 10 or 20 amp fuse that was blow in the fuse box under the dash. Popped a new fuse in and everything worked again.
 
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Old Oct 17, 2014 | 08:10 PM
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I forgot to mention the transmission was replaced about 1000 miles ago and seems to shift ok so iam not sure it would be that but any thing is possible and thank you
 
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Old Oct 17, 2014 | 08:12 PM
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well by the end of the weekend i hope to find some help on getting these codes and when i do i will post them and thank you
 
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Old Oct 17, 2014 | 08:13 PM
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i did have a couple fuses under the hood that where blown replaced that and still nothing and thank you for you help
 
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Old Oct 22, 2014 | 08:57 PM
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OK i got codes

first code p0500 vehicle speed sensor fault , p0603 internal control module KAM error , c1230 rear speed sensor circuit fault
I be leave the p0500 and c1230 are the sensors on the rear end and one on the rear of the transmission are the ones i have replaced already
 
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Old Oct 22, 2014 | 09:10 PM
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No codes for the ABS? There are ABS sensors in the hubs on the front too.

Were the codes cleared?

If they were cleared, are the lights still flashing?
 
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Old Oct 23, 2014 | 05:07 PM
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I was told that the codes where cleared last week the codes where read again last night
no abs sensors on hubs i have two wheel abs so just the rear as far as i know and no wires going to the front wheels . yes my abs light is still on and my over drive light is flashing and speedometer still not working and thank you for talking with me i do appreciate it
 
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Old Oct 23, 2014 | 09:02 PM
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Are you having any electrical issues like lights not working?

Does the transmission shift OK?
 
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Old Oct 24, 2014 | 07:27 PM
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every thing seems to be working lights and all and transmission seems to shift ok
 
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Old Oct 24, 2014 | 09:39 PM
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The speed sensors appear to not be working. My best guess is that the new ones are bad, or the wires are bad. The plugs that connect to the sensors can be bad too.
 
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Old Oct 25, 2014 | 03:23 PM
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I was thinking wires where next but i am not that good with a ohm meter but i guess i will have to figure that out i will keep you posted it might take me a little while and thanks again very much.
Its crazy that new stuff could be bad
 

Last edited by Jerry SD 1999 7.3; Oct 25, 2014 at 03:25 PM. Reason: forgot to add that
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Old Oct 26, 2014 | 08:03 AM
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I was hoping for some other responses from some other folks too. While I've never had the problem you're having right now, I have had electrical problems. And I know sometimes it's as simple as a bad ground wire.
 
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