1995 Dodge Caravan Van sometimes Stops when it gets hot...

1995 DODGE CARAVAN
20,500 MILES • 6 CYL • FWD • AUTOMATIC
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BCRANDALL
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Sometimes the RPM's on the tackometer jumps to twice the actual reading for a short while (less than a second) and the car will falter or even pop off through the intake. (It is a 3.3L engine with an ignition coil box that looks like it has three coils in it, is squareish at the front left of the engine, with two rows of spark plug wires, 3 & 3. I can't find a schematic so I don't know what drives the coil box. Bob

Van also seems to run out of gas sometimes after it gets hot on the highway after an hour or so. Will always start after 10 minutes or so. Replaced fuel line filter and it seemed to help the rough idle but not this problem.
Bob
Apr 28, 2009 at 4:14 PM
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JACOBANDNICKOLAS
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Has the check engine light come on? Also, I recommend checking fuel pump pressure. The pump may be going bad and causing these problems.
Apr 29, 2009 at 10:08 PM
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BCRANDALL
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The check engine light does come on after 5 to 15 minutes and then resets itself the next time I start it. I don't remember the error number but it had to do with the fuel system. Could the fuel pump cause the RPM's to jump to twice the engine speed??? If not then I probably have two problems, the second being the coil pack???
May 1, 2009 at 12:02 PM
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JACOBANDNICKOLAS
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Hi:
I doubt that either would do that. Chances are it is an idle air control or the throttle position sensor. However, I can't be sure without a code. Try having it scanned again to see of it shows anything different
May 1, 2009 at 7:46 PM
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BCRANDALL
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Hello again,
The error codes set are as follows: 12, 21, 32, 35, 27, and then the 55.
Thanks,
Bob
May 2, 2009 at 9:21 AM
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JACOBANDNICKOLAS
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12 Direct battery input to PCM was disconnected withing the last 50 key-on cycles

21 Upstream oxygen sensor voltage shorted to ground

32 EGR fault

35 only for 2.5L 4 cylender

27 Injector does not respond properly to the control signal

55 Completion of fault code display on Check Engine Lamp (end of codes)

If I was there with you I would start by checking the upstream O2 sensor. Check to see if it is getting power. It can have an affect on RPM's.
May 2, 2009 at 10:21 AM