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Check Engine Light Topic is solved

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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Guest

Check Engine Light

Post by Guest »

My check engine light came on a few days ago.

I live in Sacramento, CA. Does anyone know of a good mechanic in the area? Do I need to get a diagnostic test? How much do they range in price? What's the common cause of a check engine light coming on? If it's the oxygen sensor, is that easy to replace (i'm a self fixer)?

Any help is appreciated. Thanks.

bigern

Post by bigern »

i would go to auto zone and get them to pull the codes, then post them. if its an oxygen sensor code DO NOT change it immediately. post the code numbers and check the responses....

Guest

Post by Guest »

So I went to AutoZone, diagnostic read:

P0442
EVAP Emission Control System Leak (Small)

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matthew1  
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Post by matthew1 »

Sounds like a vacuum leak. Check your vacuum lines and elbows.
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1998 V70, no dash lights on

1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace

2004 V70 R [gone]

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guest

Post by guest »

I'm sorry, but I'm having a similar problem but am not a do-it-your-selfer. I definitely want to learn if possible. If you happen to have a schematic of the vacuum lines and elbows, that would be great. Thanks!!!

vicney

Post by vicney »

check your gas cap!!!!

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matthew1  
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Post by matthew1 »

Sorry, no schematic. Vacuum lines are white in my 850.

Gas cap is a usual suspect, absolutely.
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.

Also -> Amazon link
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1998 V70, no dash lights on

1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace

2004 V70 R [gone]

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original guest

Post by original guest »

I haven't had the time to check my vacuum lines, but I went into Auto Zone to borrow a DBII to reset my service light. I erased 1 the only code it found, and my check engine light went away. I've only started the car a couple of times since, but could the check engine light really be a error in itself? Or a faulty electrical problem?

Thanks for all the responses.

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matthew1  
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Year and Model: 850 T5, 1997
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Post by matthew1 »

Could it be an electrical glitch? Sure.

I haven't heard of this happening often/at all, so I would guess it's a real fault (or was) in the emissions system.
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.

Also -> Amazon link
. Click that when you go to buy something on Amazon and MVS gets a cut!

1998 V70, no dash lights on

1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace

2004 V70 R [gone]

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Barry Munroe

Post by Barry Munroe »

Hi Guys

My CE light just came on after I got gas, how can the gas cap effect the CE light, or do you think a vacuum leak? THANK YOU IN ADVANCE

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