Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

850R no power, will not go above 20 km/h

Old 02-25-2019, 07:18 PM
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Join Date: Oct 2018
Posts: 6
Default 850R no power, will not go above 20 km/h

Hello everyone, so here it is,

I have been driving a 97 850R and loving it...then the first really cold snap of the year (-40 Celsius) and the car starts and idles fine but no power. The first time this happened the car would not go over 80 km/h and RPM's would not go over 2000 maybe 2500. Then over the next few days, my top speed rapidly decreased, now it only will go about 20km/h and still, it starts and idles fine.

Please let me know if anyone has any thoughts

Old 02-26-2019, 07:53 PM
Join Date: Mar 2012
Location: Ridgefield, CT
Posts: 4,782

sounds like a fuel pressure issue at volume - has the car been in a warm garage since the cold snap? You'd need to meaure the fuel pressure via a gauge connecting to the valve on the fuel rail to see if it can maintain 40-45 PSI. Things in play are the pump, filter, relay, pressure regulator, fuel quality (ie water in fuel?)
Old 03-06-2019, 08:55 PM
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Join Date: Apr 2011
Location: West Bend, Wi
Posts: 12

Is it also stumbling or stuttering when trying to accelerate? Could be a boost leak. Check intercooler piping and connecctions.
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