I am a newbie to this great site and looking for some help. I have a 97' 850 t5 that I have recently had starting problems. The car when cold starts up fine and runs okay. No problem with the Turbo but have a check engine light on. It has recently lost mpg from 25.6 to 22.3. I have changed plugs, rotor cap, wires,filter and seems to run alot better but not back to the 25.6mpg it used to get. I only use 93 octane in it since new. once it is run for a 20 mile ride to work it will not start up again. It takes about 5 times before it starts. It does this only when the temp is up to normal. The fuel pump turns on and have checked the fuel pump relay, injector relay, coil, and battery with no problems. I tried to read the codes with my reader but the OBDII connection by the shifter is not working per the volvo dealership. I am currently in school with limited funds and trying to figure out what I need to check out. The dealership said it would cost around $125 to diagnose if they even can.I am mechanically inclined and have replaced the radiator and thermostat recently and should be able to some troubleshooting but am stumped at this moment.Any suggestions would be greatly appreciated.