I have a 99 300M 3.5L, and Yesterday I was driving, and all of a sudden I got a Oil light and the car stalled. I tried starting it again, but to no luck..... There is oil, so the engine didn't seize because of an oil issue, and I got it towed to my house and tried to start it, it does crank so I don't think its my starter, and I do get ignition, because I sprayed starter fluid through the air box, and it would start then stall about again.... Any suggestions to what it could be?

 

fuel issue see if u hear the fuel pump work when u cycle the key u can hear it in the back if it comes on. U did half the hard work already hehe

 

I can hear the Fuel Pump, but I checked the computer codes using the ignition self test and it gave me P1684.... I think that is a Battery code, what exactly does that mean, because I changed my battery maybe 8 months ago, and I don't think it would go bad. Also, what else should I check in the fuel system?

 

its just a battery disconnect code means nothing.

U could have a bad pump not pumping fuel to the rail spray carb or starting fluid into the intake see if U can keep it running of get a fuel pressure gauge and measure the pressure U want 45 to 55 at the rail.

 

Where do I hook up the Fuel pressure gauge, and how do I get to it.... In trying to find out what was wrong I found another problem, somehow I had a broken spark plug..... I replaced all my spark plugs so I know its not an spark problem..... and I sprayed starter fluid into the intake and it wouldn't start.....

 

"I sprayed starter fluid through the air box, and it would start then stall about again."
what changed???
on the fuel rail there will be a green quick disconnect clip that clips the rail to teh fuel line there U will check fuel pressure with a setup that allows the fuel to pass through and with the gauge u can see what pressure U get. That tool might be kinda expensive for u to get The setup I got was 300 bucks.

 

How do I get the engine cover off, because I removed the six center bolts, and couldn't get it off and was wondering what else I should remove, because I don't want to take something off that doesn't have to be removed...... Also at first, I thought it started, then stalled.... but after I posted it on the forum, I realized it didn't start at all... Do you know if their are any part stores that let you rent the fuel pressure gauge?

 

there is no engine cover. are u trying to take off the intake? the port that U are looking for is behind the intake not under it.

 

I rented a Fuel Pressure Gauge and the pressure was 49 at the rail..... I also asked a mechanic friend and he said that I should try to replace the crank and cam sensors, and that didn't work.... any other ideas to what could be bad?

 

check for spark now