Question about 1993 Volvo 850
Have you checked for any error codes?
Since your car is an 850 you should check your fuel pump relay, which is infamous for causing intermittent starting problems. Open the hood and remove the fuse box cover (4 torx screws), revealing the relays. If one of them is a green one marked 103 you should replace it with the newer, improved red relay. A used relay is cheap and should do just fine.
Also, you should be able to hear the fuel pump working when turning the ignition to on. After doing this a couple of times the pressure becomes high enough for the pump not to engage. If so wait for the pressure to drop before listening for it again.
Here's a topic with some info on the relay and how to check the voltage at the pump:http://www.volvo-forums.com/index.php?showtopic=15505&st=80&p=80586&#entry80586
If fuel delivery is not the problem you should check for spark. If you do not have spark the problem is likely coil, camshaft position sensor or crankshaft position sensor.
Posted on Jun 27, 2009
This car is a interferrence motor which means if you do not change the timing every 50 to 60 thousand miles on time will damage the valves and piston heads. If you changed the timing belt at 120,000 miles when the reccamended miles to change it is over used and the timing belt broke on you which means some of your valves and heads are damaged(bent) so go to a mechanic .
Posted on May 21, 2011
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Posted on Jan 02, 2017
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