Ok. I have a 2003 mitsubishi Galant. It has recently started having some trouble starting. It starts fine the first time, always. And runs fine. And if it isn't driven much it will start fine the second time. But after that it won't start at all. Unless you let it sit for a couple hours. The car turns over but won't actually catch and start. I took it to advance auto and the battery and alternator were fine. They also put it on the computer and the only code it showed was for the O2 sensor and the guy said he didn't think mine was bad. I guess my next move is to take it to a mechanic and have them hook it up to the better computer. Any thoughts on what it might be or suggestions on what to check?

SOURCE: 2002 mitsubishi galant;which code would it be for

well thats a good question. the sensor may be ok and your engine is running lean, or the sensor is bad............its possible that its bad, but I would want it checked by a qualified repair shop first, you dont want to replace parts because you THINK they are bad, that just costs you even more money. The upstream is located in the bottom of the exhaust manifold. if its lean found out why..... vac leak?

SOURCE: my 2000 mitsubishi galant 2.4 liter will start and

It is not an O2 sensor. something is shutting down the spark or the fuel, i would exhaust all possibilities with fuel starvation first. have the fuel pressure tested before you go and replace the fuel pump.

David Belcher

• 1978 Answers
• Posted on Dec 16, 2010

SOURCE: The battery keeps going dead on 1999 Mitsubishi

There is an alternator fuse located on the positive battery clamp or in the fuse block under the hood. if it is part of the positive battery clamp it is a dealer only part and will run $10 to 20 dollars. If it is in the fuse block you should be able to get one at the auto store and modify it to slide in easily. Get a flash light and check all of your fuses carefully. The blown fuse may be hard to spot. The design of the car lets the battery go dead with out even turning on the charge light on the dash to let you know you are not charging the battery.

SOURCE: After starting car check engine

Diagnosis must begin with scanning your Engine Control Module to find out why it has turned the light on. The car may seem to be running OK, but there is probably a problem that is causing you to use excessive fuel and/or is threatening to destroy some high dollar parts like your catalytic converter.