Probably loses either gas or spark. So check fuel pressure when it won't start, and check for spark on a plug wire. If fuel pressure is low, probably a bad pump. If no spark, diagnose the ignition system: coils, ignition coil control module (ICM), crank position sensor, etc.
An easy way to see if you lost gas, is to spray carb cleaner or starting fluid into the air intake while cranking engine. If it rumbles and tries to start, you know it is a fueling problem.
SOURCE: 1990 dodge caravan starts then dies after 30 seconds.
cycle key, on,off,on,off,on & leave it on (not start) & count flashes from check engine light to see if getting any trouble codes. example: 2 flashes, pause, 2 more, is code 22. 3 flashes,pause & 3 more, is code 33, etc.. let us know what you get, if any. P.S. Code 55 - 5 flashes,pause 5 more, is end of message.
SOURCE: I was driving my 96
First lets define the codes P 1738 shift time error this is a transmission issue
P1784 Transmission mechanical problem 1st and reverse
P0736 Reverse incorrect gear ratio
P0120 Throttle postion sensor switch malfunction. Here is the fix this now make alot of sense when your TPS sensor fails you will affect the performance of the transmission and hence the transmission codes so replace the throttle position sensor this is much easier than the cranksensor and here is the good thing this sensor has no adjustment just drop and go
SOURCE: My 2002 Dodge Stratus stalls while I'm driving,
Check to see if coil is firing when car stalls may be overheating and not sending spark to plugs once it cools off it will fire again
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