Iv'e had a few problems solved by a lot of good advice from forms on brickboard.But i have a big disssion to make if i should keep my 94 volvo 850 tubo with 112.000 on it or keep tring to work out the bugs.heres the deal i changed the IAC motor,TBS sensor cleand the egr valve and map sensor.The car was showing like 24 codes when i changed those parts it got rid of 12 codes and left 1 code in the A1 ignition codes 325 memory faluire.The car runs great except it smells like rotton eggs when you put a load on the motor.And another problem is the car will start like 8 times in a row then it won't start it will just crank and the IAC motor winds real loud .If you let the car sit it will start up sometimes in 5 min or it could take 20 min before it starts.I was told it could be the fuel computer or the cam position sensor.Does one one have any input that could help me with this wierd prblem.I love the car but it is getting frustrating.I'm pretty macanicly inclined but vovos got me stumped.