1999 Deville: LOW REFRIG-A/C OFF

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RTOWNSEND8680
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  • 1 POST
1999 Cadillac Deville 4.6 V8 (Auto Transmission)
112,000 miles
“LOW REFRIG – A/C OFF” message on
System will operate in ECON mode only – no AUTO mode. Compressor will not run.
How can I get the compressor to run so I can add freon? Thanks.
Oct 6, 2007 at 1:12 AM
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JASONCLARKE
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[quote:1bab953b8a="justanold"]HELLO! Who installed the new hub? check your receipt for a speed sensor replacement or part charge. info needed to proceed. 8) 8) 8)[/quote:1bab953b8a]

The new hub assembly was installed by ford although it was an aftermarket part purchased by me it was a brand new part complete with new sensor and wiring.
Jul 22, 2007 at 8:32 PM
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JASONCLARKE
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[quote:370aa81aef="justanold"]HELLO! For $150.00 the dealer owes you a conclusion. either the sensor or the tone ring has failed. because it took only a week to fail i would suspect the installation first and parts second. are you up for some self diagnosis? i can guide you. let me know. 8) 8) 8)[/quote:370aa81aef]
Sure am where should I start?
Jul 23, 2007 at 6:06 AM
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JASONCLARKE
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[quote:0195ac731a="justanold"]HELLO! Let's start by inspecting the wiring going to the sensor at the hub. visually look at the wire for a rub thru mark caused by the tire. look for any signs of wire repair like tape. run your fingers over it. compare the routing of the wiring to the left sensor. if anything is found don't attempt a repair. if all seems well you will need a digital multi-meter. about $15.00 at WalMart. 8) 8) 8)[/quote:0195ac731a]
Wiring is in perfect condition, got a multi meter.
Jul 23, 2007 at 7:14 AM
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JASONCLARKE
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[quote:25bd38119c="justanold"]HELLO! Disconnect the speed sensor and check the resistance across the two sensor leads. repeat on the left. write results down and send them on. 8) 8) 8)[/quote:25bd38119c]

Will do and post back results,
Jul 23, 2007 at 9:58 AM
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DENNYP
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  • 1,824 POSTS
[quote:7c8030b247="RTownsend8680"]1999 Cadillac Deville 4.6 V8 (Auto Transmission)
112,000 miles
“LOW REFRIG – A/C OFF” message on
System will operate in ECON mode only – no AUTO mode. Compressor will not run.
How can I get the compressor to run so I can add freon? Thanks.[/quote:7c8030b247]You need to clear the trouble code that is stroed in the PCM.After that,you need to clear the low refrigerant code from the driver information center.You should then be able to charge the system.
Oct 6, 2007 at 11:34 AM
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BUZZSAW
  • ✓Experienced Mechanic
  • 1,198 POSTS
[quote:efa517403b="dennyp"][quote:efa517403b="RTownsend8680"]1999 Cadillac Deville 4.6 V8 (Auto Transmission)
112,000 miles
“LOW REFRIG – A/C OFF” message on
System will operate in ECON mode only – no AUTO mode. Compressor will not run.
How can I get the compressor to run so I can add freon? Thanks.[/quote:efa517403b]You need to clear the trouble code that is stroed in the PCM.After that,you need to clear the low refrigerant code from the driver information center.You should then be able to charge the system.[/quote:efa517403b]

he is right any codes and the compressor wont run, fix the leak
Oct 8, 2007 at 4:32 AM
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