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Same engine. different bosch mafs?

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Azik09
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Re: Same engine. different bosch mafs?

Post by Azik09 » Thu May 11, 2017 8:08 am

MAF on my 1st photo is an insert from 0 280 217 107. I removed it from my own car (S70T5, 1997, M4.4) to make a photo, specially for you. :wink:
I have not 0 280 217 002 right now, because I lent it to one of my clients. Maybe, later I'll make a photo. But they are REALLY different...
0 280 217 002 provides about 2.7 Volts at signal wire (pin #4) with zero air flow (ignition is on, engine stopped). 0 280 217 107 provides about 0.1-0.2 Volts with the same conditions.
Need any more proofs? I have them...
If my English is bad, please correct me :oops:

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misha
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Re: Same engine. different bosch mafs?

Post by misha » Thu May 11, 2017 9:11 am

Azik09...
You don't need to prove anything.With info you provided it is clear that they have different specs.
Thank you,because you saved us from further research about it and shed some light on interchange ability question.
I never had an old style maf by hand to compare it with new style one.
I knew that part numbers are different and i know all about their different engine managements,but somehow i wondered if those Mafs would be the same internally..as just an inserts.
Now it is clear that they aren't.
Last edited by misha on Fri May 12, 2017 6:39 am, edited 1 time in total.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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

kaneelschep
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Re: Same engine. different bosch mafs?

Post by kaneelschep » Thu May 11, 2017 11:53 am

I put the other insert it in my car.
It runs exactly the same, but if it would only be a bit different, I dont think i would notice anyway.

kaneelschep
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Re: Same engine. different bosch mafs?

Post by kaneelschep » Mon May 29, 2017 4:11 am

It has been running fine with the other maf for all this time now.
Drove almost 4000kms and still not had to disconnect and reconnect the maf.
So maybe the old maf itself was just faulty.. Good chance since it was from 95 and 300000kms old..
Bought this one with the whole top of the filterbox and a complete seatbelt for 30 euros. Good price for a 2012 maf.
I even used a little less lpg overall. After installing the lpg I got very picky when it comes to keeping receipts and calculating fuel usage. ;)
Maybe it was just driving style, but I actuallly had more traffic than usual. And always do only 100 on cruise control.

And even better news. This week the engine check light spontanously turned off by itself.
So no more lights on in the dash!! I was happy like a child. :)

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abscate
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abscate

Re: Same engine. different bosch mafs?

Post by abscate » Mon May 29, 2017 4:43 am

Finally the light has burned out!!

:-)

I forget the protocol exactly but the ECU takes something like 6 cycles without fault before it clears an existing condition.
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kaneelschep
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Re: Same engine. different bosch mafs?

Post by kaneelschep » Mon May 29, 2017 3:58 pm

And about time :D

kaneelschep
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Re: Same engine. different bosch mafs?

Post by kaneelschep » Wed Jun 07, 2017 6:34 am

It came back for a short time and went of again.. within hours of each other.
Will get the garage to check on it one of these days.

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