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MAF Sensor replace or clean?

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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jblackburn
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Re: MAF Sensor replace or clean?

Post by jblackburn »

Definitely a possibility.

Yank the plug and see if it will drive around. You'll get a check engine light, but you can easily reset it.
'98 S70 T5
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850TurboWagon1995
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Post by 850TurboWagon1995 »

the check engine light is already on and read problem with MAF...i will pull the plug now and test it real quick. How do you reset the light, by the way?

jblackburn
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Post by jblackburn »

Read and clear codes from A2 as described here:
http://volvospeed.com/volvo_repairs_how ... codes.html
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

850TurboWagon1995
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Post by 850TurboWagon1995 »

awesome thanks.

OK, I disconnected the MAF and started the car. As soon as I put it in gear, it would die. I reconnected the MAF and it started and ran fine.

jblackburn
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Post by jblackburn »

Clean the sensor, clean the connector, and fasten the connector down with a zip tie.

Clear the check engine code and go drive it. If it still acts up - dying, bucking, etc. - the sensor is just on its way out.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

850TurboWagon1995
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Post by 850TurboWagon1995 »

Has anyone used or bought a Cardone remanufactured MAF sensor? They are the only ones available in my area that I can go pick up. Thanks

jblackburn
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Post by jblackburn »

Aftermarket sensors DO NOT work.

You'll need to order a genuine Volvo or Bosch sensor. Check out the online parts vendors at the top of the page (IPD, FCP, MyVolvoParts)
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

850TurboWagon1995
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Post by 850TurboWagon1995 »

OK good advice, found a decent priced Bosch for $164 with free shipping. Going to clean connector and if it still acts up buy a new one. thanks for all the help!

850TurboWagon1995
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Post by 850TurboWagon1995 »

jblackburn wrote:Clean the sensor, clean the connector, and fasten the connector down with a zip tie.

Clear the check engine code and go drive it. If it still acts up - dying, bucking, etc. - the sensor is just on its way out.

I cleaned the MAF again, cleaned the connectors and now it runs worse than ever. Will barely drive without cutting out every 50 yards. I guess I will have to order a sensor.

Also...checked the check engine light, followed the instructions...it showed no fault 1-1-1 i cleared it all but my CEL is still on.

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erikv11
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Post by erikv11 »

850TurboWagon1995 wrote:awesome thanks.

OK, I disconnected the MAF and started the car. As soon as I put it in gear, it would die. I reconnected the MAF and it started and ran fine.
This is the one thing about this thread that doesn't really make sense. When you unplug the MAF, the car should go into a default mode where it runs fine. Maybe a little rich, but it should not die when you put it in gear. And right now with it running worse than ever, it should improve when you unplug the MAF.

So I am not really sure the MAF is the problem. Just something to consider, because $165 is not cheap if it turns out to not be the problem. Ideal would be if you could swap in a known, working MAF to test.
'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 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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