1. Codes for 850:

http://au.geocities.com/ozbrick850/computercodesvolvo.html


2. Go basic first:

This is a good flow-chart to follow when dealing with NO-START condition:

http://www.motorminute.com/Service/StartFlowChart.pdf

Then under "Check for problems with Fuel and Ignition Sytem":

1. First Fuel problems are rare. Sometimes problems are in:
- Fuel Filter
- Fuel Pump
- Fuel Pump Relay

2. So go after the the ignition system. Known areas of problem for this car:

- Relay
- Fuel Relay
- Sensors themselves are rarely a problem, but the CONNECTIONS are known to be corroded by salt from the winter. So I clean all connections to all sensors once a year in the spring....Part of my routine tune-up.

Hope this helps.


3. Sometimes the problem is as simple as a blocked FUEL FILTER:
www.volvospeed.com


Let us know what you find.

cn
1998 V70