Chrysler 300, 300C & 300C SRT-8 The flagship of the Chrysler lineup offers the driver every bit of class of any European luxury sedan, combined with the availability of the Hemi, the engine which dominated the American Muscle Car Era

99 300M shuts off while driving

Old 02-11-2007, 01:49 PM
Thread Starter
Join Date: Feb 2007
Posts: 3
Default 99 300M shuts off while driving

OK, I have everybody, including the dealer, stumped on this one: I have a 99 M with 100k miles on it. About 3 weeks ago the local temperature got about 15 degrees F and it has remained that way or colder since. At the same time. I began to develop a problem where my car would just shut off on its own while I was driving. At first it would happen after doing about 15 minutes of city driving. Now it does it almost immediately. Car used to restart immediately, now it requires me to drive 2-footed to get it to start without stalling.

I initially had my spark plugs replaced and my throttle body serviced. Then, I had my crankcase and cam position sensors replaced. Then, I had the dealer find and fix a vacuum line leak. Then, I found and fixed a loose connection on the positive clamp going to my battery.

There have been no check engine lights or codes. The car seems to run more reliabley after driving it for a while, though my tach seems to be acting a little erratic (i.e., I take my foot off the accelerator while going up hill and rpm remain at 1500, jump up to 1750, then decrease to match speed).

The problem always occurs after the car has sat overnight in freezing temps.

I am getting ready to ditch this car. Any last minute suggestions?
Old 10-15-2012, 08:31 PM
Junior Member
Join Date: Oct 2012
Posts: 1

I am having the same problem. Except I am in the south and the temperatures are mild. Also have the the erratic RPM jumps. I think my issue is with the fuel system but not sure. Does anyone out there have any other suggestions as to what the issue may be...
Old 10-16-2012, 04:55 PM
Senior Member
Join Date: Sep 2012
Location: Somerset N.J.
Posts: 396

Check Fuel Pressure. There is a port, center, drivers side of plenum near the center coil. Pressure should be 50+ at all times running.
PCV valve how old ? Can stick intermittantly...

Last edited by FIREM; 10-16-2012 at 04:59 PM.
Related Topics
Thread Starter
Last Post
Chrysler Aspen
05-20-2018 04:12 PM
Chrysler Voyager & Town & Country
07-24-2014 09:46 AM
Chrysler 200 & Sebring
02-28-2012 10:58 PM
Chrysler Voyager & Town & Country
12-29-2011 11:23 AM
Chrysler 200 & Sebring
12-17-2011 01:22 PM

Thread Tools
Search this Thread
Quick Reply: 99 300M shuts off while driving

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.