jaysond81
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• dublin, CA, USA |
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• Registered on 3/13/2012 |
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• 3 posts |
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 Posted:3/13/2012 07:50 |
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i have seen this question asked a few times on-line but i cant seem to fix it or have it fixed. i want to avoid taking it to the dealer but i might have to. any ideas or help would be appreciated. thank you!
check engine light is on, the code is P1633 Keep Alive Voltage Low.
i had a ford tech look at it on his day off. he was able to trouble shoot from the battery all the way to the firewall and no issues with power/cables/corrosion, ect. i have a brand new battery and alternator and the only thing i have done to the car since i got it was put in a new stereo. i do recall the light coming on right around the time i put the new radio in but i cant say if it was before or after. i just cant remember but it was right around the same time. ive read online it could be the PCM but the ford tech who was working on it said if my PCM was bad i would have other problems and other codes.
any idea's? |
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wizzard1222
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• Ballwin, MO, USA |
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• Registered on 1/27/2011 |
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• 139 posts |
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Posted:3/13/2012 10:25 |
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Hit the GYM...lol
Not really...
Maybe you have a pinched wire from the installation of the radio...?
Grounding to some metal framework...?
Or take the position that the radio is the cause...check the original packaging or website for
electrical specifications. I am not the audio/electrical specialist...but there are some
real smart "technicians" in audio that have TON of knowledge, experience and "time saving
tips"... 
If you can find some electrical specs. on your radio...maybe you can find the answer...if
not....seek a local audio specialist for their view of your issues...! They may have the quick-n-accurate answer....maybe not..?
Give complements all around going in...smiles always help start the conversation.
Pose a few to the point questions about you issue...
Best from this corner.... |
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jdmeaux
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• Lafayette, LA, USA |
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• Registered on 1/5/2009 |
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• 525 posts |
• 1 Vehicle
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Posted:3/13/2012 15:22 |
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I would try removing and disconnecting the radio. If that clears the problem, then its a bad connection or a ground. Electrical problems are so much fun to figure out...NOT!! 
That's about all I can think of.
*******************
PROUD MEMBER of www.crownvic.net
It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.
1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified. 
13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane
I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter
.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos
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jaysond81
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• dublin, CA, USA |
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• Registered on 3/13/2012 |
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• 3 posts |
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 Posted:3/14/2012 09:17 |
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thanks for your answers! thank you again!
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luis12
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• Spokane, WA, USA |
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• Registered on 8/16/2012 |
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• 1 post |
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Posted:8/16/2012 01:19 |
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Since the 1990s, the nation's law enforcement fleets have been dominated by Ford's Crown Victoria Police Interceptor, affectionately known to officials as the Crown Vic. But as beloved as the dependable workhorse has become, it will soon be a thing of history. Check this out.
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jimbo1462
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• Dubois, WY, USA |
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• Registered on 8/29/2012 |
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• 2 posts |
• 3 Vehicles
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Posted:8/29/2012 15:24 |
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This is only a guess, however, it may help. The 2006 P71 comes with a 200 amp alternator, which is managed by the PCM. The idle current should be 135 amps (to run police emergency lights, heater/a.c., etc at idle without decreasing the battery) Perhaps you installed a civilian alternator which will tell the PCM that the idle voltage is low. Another good piece of info for all P71 owners is to download the Police Interceptor Modifier guide from the FoMoCo web page. There are specific guides for different years of manufacture, so be sure to download the correct guide for your vehicle.
jimbo1462: |
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