Posts: 2
Joined: 7/21/2007
Status: online http://www.dodgeforum.com/image/blank.gif got 2001 Dodge Caravan 2,4l 4cyl 50000ml on the van . runs like new in the city at speed 30-40 . but if i go on highway , engine stop running after 5-10 minutes at speed 65-80 and wont start before it cools off . no check engine light no codes comes out . please help.

Quite possibly a camshaft position sensor or crankshaft position sensor. Classic symptoms.

Agreed. They can give erroneous data and not throw a code. Cam and crank sensors are cheap at around $25. Easy thing to try first. I would go with the crank sensor first.

If you have the patience to troubleshoot, next time it dies check for spark and fuel. If both are missing, the automatic shutdown circuit (ASD) has disabled the coil, fuel pump, injectors, and O2 sensors. Why? Because the PCM detected it wasn't getting timing information from the crank and/or cam sensors.

When the engine won't start, does the starter turn the engine over, it just won't fire, or when you turn the key to "Start" does it do nothing?

-Rod

when the engine don't start everything works , starter turn the engine but nothing is going on . coolier it gets , engine start but if i pout it on gear feels like it has no power , van does not run . i have to wait bofore engine gets cool , than it goes fine like nothing was happened . it happens on high speed only . slow , runs great . thank you .

I have an 88 Caravan 3.0 MFI with the same type of issues. It is not overheating, but after running highway speeds it will suddenly stop running. Still getting spark, fuel, and air. After it cools for 20 minutes or so it runs with no issues.

I can get it to idle (rough at times), and it will not throttle up.

Acts a lot like vapor lock, but no vapor in the fuel lines???

The family and I drove it ~ 100 miles yesterday (mostly highway), and it stopped when we were only 10 miles from home. It has done this now on 4 different occassions, and it will restart after a cool down period and run fine.

Any help is appericated.

Justin