Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Not working back-up lights

Old Feb 22, 2007 | 02:13 AM
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Default Not working back-up lights

When my mechanic was backing up the car I noted that back-up lightswere not on, then he had to go forward and back, and this second time when he put gear in reverse, lights were on.
Next day my wife was backing the car, and lights were not on.

Is PNP sawitchgoing bad?

Thanks
 
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Old Feb 22, 2007 | 08:43 PM
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Default RE: Not working back-up lights

Yes that is a classic PNP going bad.
 
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Old Feb 23, 2007 | 01:17 AM
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Default RE: Not working back-up lights

Tech, in your experience, how much time it may take for PNP to start giving "real" troubles?

Thanks a lot .
 
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Old Feb 23, 2007 | 01:35 AM
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Default RE: Not working back-up lights

^I know one of the problems a faulty/broken PNP switch will do is that it will cause you to start in 3rd gear...Which I cannot imagine is good for the transmission.

This is a very informative tutorial of the symptoms/problems and how to replace.
http://volvospeed.com/Repair/pnpswitch.php
 
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Old Feb 23, 2007 | 11:17 PM
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Default RE: Not working back-up lights

Well, I am going to get another car in 8-10 months, and wonder if the PNP is going to last until then.
 
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Old Feb 24, 2007 | 12:39 PM
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Default RE: Not working back-up lights

The worse thing that will happen with it besides it starting off in 3rd gear is it won't allow the starter to turn over.

If the reverse lights are the only sign it might last till you get the new car.
 
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Old Feb 25, 2007 | 12:04 AM
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Default RE: Not working back-up lights

Thanks.
 
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