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OBD-1, a 1995 850, and troubleshooting RPM bounce

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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Blackwagon
Posts: 9
Joined: 5 November 2018
Year and Model: 95 850
Location: Connecticut

OBD-1, a 1995 850, and troubleshooting RPM bounce

Post by Blackwagon »

Hi, guys. I’m new here... I have a 95 850 GLT 5-speed (non turbo) and I’ve been having some issues: first the alternator went so I replaced that, then I’ve been having this issue when I shift the car is sluggish and the rpm’s go up and down, I changed the coil, cleaned the air filter and the mass aid flow sensor and nothing changed; The check engine light just came on but I can’t check the codes because my obd-1 seems to have shorted out, I plug in the (repaired) jumper wire and the light glowes, I push the button and it glowes brighter but I don’t get any codes flashing. It has 355K on it but has always been maintained and has served me well as the third owner. I’m sure it’s something easy (I hope) but I could use some help.

Thanks in advance...
Last edited by matthew1 on 06 Nov 2018, 15:19, edited 1 time in total.
Reason: Improved title

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misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

'95 should have both...ObdI under the hood and ObdII in the center console under the coin holder.
'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

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Clemens
Posts: 1932
Joined: 3 September 2015
Year and Model: 96 855 R + 94 855 T5
Location: Austria
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Post by Clemens »

not all 95s had OBD 2. My 95 NA with Fenix had no OBD 2 Port.
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
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Post by misha »

95 GLT is 2.5 20v car....10v cars have Fenix management and they are GLE.
'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

Blackwagon
Posts: 9
Joined: 5 November 2018
Year and Model: 95 850
Location: Connecticut

Post by Blackwagon »

No, the only one is under the hood.

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misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

Are you sure?
volvo-850-storage-tray.jpg
volvo-850-storage-tray.jpg (55.91 KiB) Viewed 1283 times
'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

Blackwagon
Posts: 9
Joined: 5 November 2018
Year and Model: 95 850
Location: Connecticut

Post by Blackwagon »

Nope. I have an ash tray there.

Blackwagon
Posts: 9
Joined: 5 November 2018
Year and Model: 95 850
Location: Connecticut

Post by Blackwagon »

It’s a 5-speed so the set up is a little different.

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

All of them are 5speed manual and 4speed auto from the factory.
That coin holder is UNDER the ashtray.
All U.S market '95 have both...obdI and ObdII....are you sure it isn't '94?They didn't had obdII.
consile-2.jpg
consile-2.jpg (154.84 KiB) Viewed 1267 times
'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

Blackwagon
Posts: 9
Joined: 5 November 2018
Year and Model: 95 850
Location: Connecticut

Post by Blackwagon »

F17B7762-5A92-4E61-B177-D2B362AC2607.jpeg
Here ya go...

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