I have read that some 1996 850's have an air pump. If I have one, where is it? I believe I do not, as the vacuum tree has 3 plugged connections and 2 active connections: one to the intake and the other to the upper nipple on the airbox.
I cannot find the cause of a P0133 code, and this is a long shot, but am stumped.
1996 Volvo 850 Where is air pump?
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John850GLT
- Posts: 27
- Joined: 9 July 2013
- Year and Model: 2000 V70R
- Location: United States
- misha
- Posts: 5379
- Joined: 7 December 2008
- Year and Model: '97 850 2.5 20v
- Location: Serbia
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P0133 is o2 sensor code not sas system code.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
- erikv11
- Posts: 11800
- Joined: 25 July 2009
- Year and Model: 850, V70, S60R, XC70
- Location: Iowa
- Has thanked: 292 times
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Just FYI: the air pump is up front and down low, sort of next to the radiator. If your car has SAS then it will also have (1) the intake line to the air pump and (2) an SAS valve, as shown in this picture:


'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6
153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
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