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I have a 1999 Chrysler 300M. It won't start. I drove it home yesterday and parked it. I came out a few hours later and it wouldn't start. I pressed the fuel pressure valve and a weak stream of gas trickled out. I sprayed starter fluid into the air intake and the engine started and ran for a second. I disco'd battery, dropped the tank and replaced the fuel filter. I tried to start the car while the tank was still on the ground. It wouldn't start. I pressed the fuel pressure valve and a strong stream of gas sprayed out. I sprayed starter fluid into the air intake and the engine started and ran for a second. Fuel flow problem solved? So I checked the plugs. They were awful. I cleaned and gapped them and the car still wouldn't start. I replaced the plugs and the car won't start, except for a moment after starter fluid has been sprayed. I checked for codes. I obtained a p1684: The battery has been disco'd. I knew that. The car won't start. I have used the remote to unlock the car in an attempt to satisfy any security requirements. Any ideas? Please HELP!!! Thanks

Answers from the Automotive Experts

Amanda J. Pierce, MBA Conrad, Thank You for writing into AskPatty! To address your concern, it seems you may have ruled out most fuel issues, except your fuel pump. You might have needed to replace the fuel pump while you had the tank down and replaced the filter. I would revert back to the operation of your fuel pump to further resolve your issue! Hope this Helps! A.J. Valle

Judy Curry, Co-Founder and Vice President of Marketing at Currys Auto Service Conrad, Any car will run if you spray starting fluid directly into the intake, you can run a car for a short period like this if needed. Most likely it is a fuel pressure issue but without doing the proper fuel pressure test we would merely be guessing. There are a myriad of possibilities from spark issues, fuel issues, and possible crank sensor/cam sensor issues. I would, however, not spray anymore starting fluid into the intake as it is bad for the vehicle and can foul the spark plugs as well. It's always best to bring it in to your trusted technician so he can do some more testing and possibly run some diagnostics. Looks like you've done alot of trouble shooting on your own, so make sure you share all these little details. Good luck!

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