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850 driven 1,800 miles on 4 cylinders

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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erikv11
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Joined: 25 July 2009
Year and Model: 850, V70, S60R, XC70
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Re: 850 driven 1,800 miles on 4 cylinders

Post by erikv11 »

I'm sure those instructions work, don't mean to dispute that. But just some points of discussion here: That guide has you removing the fuel pump relay, is that right? If you are going after the pump, just pulling the fuse seems easier.

Also, if you are disabling the pump then waiting to do that until just before the test isn't so great. The lines will still be full of fuel when you start the test, so for the first several cranks a lot of fuel will still spray into the cylinders. Better to pull the fuse (or relay) with the warm car running, let the car use up the fuel in the lines and until it sputters out. It will run for several minutes - there is a fair bit of fuel in those lines.
'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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