Volvo S60 & V60 The mid level Volvo sedan and wagon that offer power, performance and an exciting ride.

Question - problems with my S60 computer

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Old Jun 24, 2009 | 04:42 AM
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Default Question - problems with my S60 computer

I own an S60-T5 from the year of 2001. Recently the computer started showing an alarm indicating "emission system service required". I thought that this had to do with the oxygen sensors. Those where replaced by the local Volvo service center but the alarm remained the same.
They have sent the computer to a local computer service center to be checked and it is shown as behaving properly even though the Volvo center believes that the problem is coming from the commuter itself. They gave me two options, one is to buy a new compute and another is to send the computer to Sweden for analysis
Did anybody face such an issue?
What is the exact part number of the computer? is it Bosch or Volvo?
As their price is outrages, and since I can ride with the car as is for the time being, where can I get it cheaper on the web?
 
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Old Jun 25, 2009 | 07:38 PM
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Is there any vacuum leaks?
 
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Old Jun 26, 2009 | 11:12 AM
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Default more info and questions

Here is some more information which I thought was not related but it might be.

The car had been fidgeting for some time now. This happened in the last 3-4 weeks though the Oxygen sensor
alarm had been for a few months now. I placed the car into a service center once it started fidgeting because I thought the two are related.Nevertheless, tow service centers that where checking the issue and stating that the problems where not related.

The first one replaced 2 coils and told me to replace the sensors but that didn't help so I was told that the computer is malfunctioning (even though it was tested to be operating properly as I stated above. The fidget disappeared for a while so I did not change the sensor.

Than the fidget reappeared, I took the car to the main service area and they replaced the other 3 coils plus all 5 plugs. They also said that the sensor issue is coming from the computer.

I took the car yesterday and today, even though I have got 5 new coils and plug, the fidget came back (though not as bad as before).

yesterday I called the main service again and asked them if they checked the compression. They said nothing special came out of their general diagnostic tests which they have done but they might not have done all tests.

To my mind, things are related, I tend to believe that the computer is fine as it seems like a dummy station to me ,measuring sensors which are dummy resistors and it could be that the burning is not right after all.

What do you all think?
Should I ask for special tests?
 
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Old Jun 26, 2009 | 07:34 PM
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What exactly is it doing?
Were the O2 sensors OEM or atleast Bosch sensors?
 
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Old Jun 27, 2009 | 03:53 AM
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Default It is fidgeting in low engine work

like when you stand on a red light or on park.

They tried both Bosch and Volvo original sensors. No OEM sensors where tested but it doesn't help.
 
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Old Jun 27, 2009 | 09:19 AM
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But when at a light what happens the idle jumps up and down? It stalls?
Has the throttle body been cleaned lately?
 
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Old Jun 28, 2009 | 02:26 AM
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Default It jumps and sometimes stalls

The throtle had been cleaned two weeks ago
 
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Old Jun 28, 2009 | 07:33 AM
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Is all the intercooler hoses good?
 
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