Question about 1996 Volvo 850

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Inspection Time for my 1996 850 Volvo, but a problem here......

I took it to my mechanic and he turned off my engine light, and he told me I have to drive alot, so when he sets the monitor in between my front seats, there are some codes that are not done yet, I have two codes left to be done. I have been doing alot of driving and my mechanic has turned off the check engine light twice, and i need to get my inspection asap, please help me.

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  • Coss May 11, 2010

    What codes is it reporting?

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What are the problem codes that come back with the ck eng light and whats been done to fix the problem /a drive cycle can take up to 250 Miles and needs to have 35 mile non stop drives in that time

Posted on Aug 26, 2008

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Check engine light suddenly came on. Car has been running well. What coul dbe the problem. This is a 99 V70 Volvo wagon with 160,000 miles on it. I bought it 2 months ago and trustworthy mechanics told me...


The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.

When the Check Engine light (or Service Engine Soon) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.

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I spoke with an expert Volvo mechanic and he told be Volvo used two different tailight assemblies, a Hella and another one I can't recall by name. He said there appears to be no rhyme or reason as to what car has what, and this is the reason for the discrepancy in the proper bulb. The only way to know for sure what you have is a visual inspection on the unit.

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Replace front and rear o2 sensors to turn off


sounds about right at a shop the parts alone retail for about 300 then markup,labor,diagnostic, and after run(emmisions test)

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1 Answer

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TRY ANOTHER FUEL PUMP AND FUEL FILTHER THESE PUMPS ARE FUNNY ON VOLVOS HAD SAME PROBLEM ON 850 TURBO AND SURE ENOUGG IT WAS THE PUMP

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2 Answers

WILL NOT START ALL THE TIME


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First, all these mechanics that you took your car to, did they have the full Volvo diagnostic software? In other words, were they able to access ALL computer systems that the lights were on for? If not, take your car to the Volvo dealer or a shop that has the proper software.
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Did you try adjusting the dash light dimmer control?

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