Note: Allpar does not take responsibility for the veracity of any information or opinions here, does not claim expertise, may not have verified or performed the fixes, repairs, or modifications, and is not responsible for any consequences. Please proceed at your own risk.
It is often cheaper to simply replace parts which commonly fail, if you do it by yourself, than to take your car to a mechanic, who often will do the same thing but charge a premium price to do it. Most of the parts that fail on Chrysler, Dodge, and Plymouth vehicles are relatively inexpensive and easy to replace. Get a Chilton's or Hayne's guide from your book store or, if you're really serious, a factory service manual. Then you'll be able to locate and replace each part.
Chrysler cars with fuel injection all have electronic ignition (which became standard in the mid-1970s across the line). A number of common problems tend to occur. Some of these are in our stalling / non-starting repair page.
We strongly suggest that the first action you take is to check the computer codes, which can tell you what part is failing - most of the time. Sometimes, especially with the Hall Effect and MAP sensors, it will not notice a failed part.
If you fail a smog test, with high oxides of nitrogen (NOx), Mark Swingle advised checking:
If you have a 2.2 or 2.5 liter engine (or for that matter, numerous other engines), the following sensors may be mounted on your throttle body; they are present in many cars, whether Chrysler or other brands, too. (Descriptions courtesy Bob Lincoln.)
Let's go to the fundamentals before troubleshooting. On EVERY EFI engine, the computer expects to see pickup pulses (from crankshaft position sensor if DIS system or distributor if not) if it is to activate the fuel pump beyond the fuel system priming stage and to provide spark. Chrysler is not different. Here's what I'd do:
— Bohdan Bodnar
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