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1996 850 R Strange cutout with all newish ignition parts Topic is solved

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

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Clemens
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Joined: Thu Sep 03, 2015 12:34 pm
Year and Model: 96 855 R + 94 855 T5
Location: Austria
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Clemens

Re: 1996 850 R Strange cutout with all newish ignition parts

Post by Clemens » Fri Mar 13, 2020 2:09 pm

Thanks, interesting to know. And what a perfect timing to learn more about corona. Also, there is an Italian town called Corona. Coincidence? I doubt it 😉

Now, back to business. I swapped the cap, rotor, wires and and fuel pump and injector relais from the 94 to the troublesome 96. Now it seems to work flawlessly, runs great under boost (that TME exhaust makes a noticeable difference).

What is left to do is
a) hope that it stays this way and
b) try to sort out the problematic part by swapping single parts between cars.

I will update if I can duplicate the problem in the 94 when installing all parts I removed from the 96.
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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misha
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Year and Model: '97 850 2.5 20v
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misha

Re: 1996 850 R Strange cutout with all newish ignition parts

Post by misha » Fri Mar 13, 2020 4:53 pm

Glad you sorted it out,but you should perform swapping for one item at a time.
Now....we don't actually know which item was the source of the problem.
'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

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abscate
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Year and Model: 99T5 ,99S70,2005V70
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abscate

Re: 1996 850 R Strange cutout with all newish ignition parts

Post by abscate » Fri Mar 13, 2020 7:40 pm

Buy new parts for the 1994, throw the old ones away, and go smell the 🌹
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

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Clemens
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Year and Model: 96 855 R + 94 855 T5
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Austria
Clemens

Re: 1996 850 R Strange cutout with all newish ignition parts

Post by Clemens » Sat Mar 14, 2020 12:41 am

I will try to identify the faulty part by swapping single parts now, but I finally wanted to see results. now it is down to 5 parts, of which I will start with inspection of the fuel pump relais because 24 yrs old. then I will give the cap and rotor a shot (although just 4 yrs old).

Thanks for all your input and patience.
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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abscate
MVS Moderator
Posts: 20460
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 285 times
Been thanked: 898 times
Trinidad & Tobago
abscate

Re: 1996 850 R Strange cutout with all newish ignition parts

Post by abscate » Sat Mar 14, 2020 3:50 am

Ignition,,,,,,,,,,,,ignition!

( to the tune of Fiddler on the Roof)
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Clemens
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

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