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.

Stumbling 850

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Old Feb 10, 2011 | 03:08 PM
  #1  
AlanS's Avatar
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Default Stumbling 850

1995- 850 NA.
Alright...car running terrible...stumbling. Brought it to my friend who has a code reader (I didn't know about the onboard one). Codes: PO137, PO400, P-1310, P-301. He cleared all codes...now I am left with the results.
This all seemed to increase after a 'tune up' about two months ago...new plugs (the multi-prongs ones from Groton), new cap,wires and rotor. It is getting increasingly worse...stumbling along.
What to do?
 
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Old Feb 10, 2011 | 04:45 PM
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Anytime I hear about poor running, I first look at vacuum, then MAF.
 
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Old Feb 12, 2011 | 12:40 AM
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Originally Posted by AlanS
1995- 850 NA.
Alright...car running terrible...stumbling. Brought it to my friend who has a code reader (I didn't know about the onboard one). Codes: PO137, PO400, P-1310, P-301. He cleared all codes...now I am left with the results.
This all seemed to increase after a 'tune up' about two months ago...new plugs (the multi-prongs ones from Groton), new cap,wires and rotor. It is getting increasingly worse...stumbling along.
What to do?
Agree w/Jack; look at what the codes are telling you and ck the compression.
 
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Old Feb 13, 2011 | 05:07 PM
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Looks like, and I will know for sure after ride tomorrow...Cracked insulator on #1 sparkplug...nice crack! It idled smoothly...long ride tomorrow. As for the EGR...looks like that will have to wait for some warmer weather.
 
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