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MAF replaced with generic MAF -- 98 V70 running very poorly!

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Gentleman Mac
Posts: 104
Joined: 8 July 2011
Year and Model: 850 1995
Location: Georgia

Re: MAF replaced with generic MAF -- 98 V70 running very poo

Post by Gentleman Mac »

Looks good to me.
1995 854 167k
1998 v70 glt 166k

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misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
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Post by misha »

Yep,that's the front one.The rear one is #15062.
'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

boosted5cyl
Posts: 1100
Joined: 29 January 2010
Year and Model: '98 V70 T5, '99 S80
Location: St. Paul, MN
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Post by boosted5cyl »

For what it's worth, I put a POS no-name reman MAF from O'Reillys in our T5 30K miles ago, car has about 213K on it now.. Zero problems with this MAF so far. However I did do an adaptation after I changed it. I know the consesus is to use bosch, but since you already have a generic one in there you might try an adaptation as well as a NEW set of plugs, gapped correctly.

Are you sure the connection and cabling for the MAF are good? Any CEL? The symptoms your describe are not typical of a dud O2 sensor, moreso a vacuum leak or a MAF signal that the ECU doesnt like. MAF is easy to isolate though, just as you did before, start the motor up with the sensor disconnected. Given your miles an O2 is a good idea, but I doubt it going to remedy the erratic running you are seeing,
'04 XC90 2.5T AWD (Angus) 134K.
'99 S80 T6 (Medusa) 214k. On borrowed time LOL
'98 V70 T5 (Vivienne). RIP @ 228K. Spun rod bearings.

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