Try changing the starter. I have an 86' Chrysler fifth avenue and the starter has gone out on it. When this happens it will drain your battery faster than you can turn the key in the ignition. If that's not the problem then it could be a bad connection either on the starter or the battery. On my car one of the wires came loose on the battery and it wouldn't even try to start, once I got it connected now it is up and running.

I have heard of problems with the ammeter in the dash. Just an idea!

Try checking your muffler bearings and automatic power shut off switch under the hood.

I think it might just be a bad connection so clean both positive and negitive terminal's on your battery.

Check your voltage reglater.

I had the power antenna kill my battery; it was broken and if it fell (a bit of tape around the base held it up) the motor would try to retract it. That took a bit of time to search down.

Or it might be the fusible link that runs on the drivers side of the car. I had the same problem, but bypassed it on an 87.

Change your voltage regulator. I have an 88 and I had the same problem. I put a new voltage regulator in it, and she ran perfect! These are bad ass cars! Once you get all the ticks worked out, you won't get a better car unless you go back to the fifties!!!

I'm curious about the fuel mileage, also. Is that the stock setup of the 318/2 bbl carb? I get about 20 mpg highway only, cruise set to 65, no more. But in town driving she sucks gas more than the 24' straight truck I drive for work. (the big diesel truck gets about 12mpg)

Ya, I get about 20-21 on the highway also, but lousy city miles, what was Chrysler thinking only putting an 18 gallon fuel tank in?! I too would like to know how to get 25 MPG.

The best mileage I ever got in my 318 2-barrel was 22.1, and that was a long trip on a flat, straight road doing 55 mph on a windless day.

I had my 5th for 10yrs. but sold it recently and miss it! The deal with MPG is this- the ancient choke system gobbles gas while the car warms up, if you make a lot of short trips you will get 13mpg. Also the lean burn computer system gets old and can't hold the timing right- gas waster here too. Finally, if you want mid 20'sMPG don't go over 55-60MPH, these cars are geared for what used to be the maximum speed limit. Finally, the 318 is hard on the oil, it gets black after just a few thousand miles- I felt better running Mobile 1 Synthetic 5w-30 and changing every 7,ooo miles or so, think I got a little better MPG with the good oil. Hope this helps and HAPPY motoring in your mighty 5th. Ave. -Rob.