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Dodge Intrepid Problems

I have a 96 Dodge Intrepid 3.5L V6 that shuts down completely after reaching approximately 230 degrees F and only around this temp no matter the driving conditions. For some reason the car is cutting off power to the fuel injectors. The fan motor is fine, new water pump and thermostat, not losing coolant, and not overheating. New fuel pump and filter. No misses, new spark plugs and wires. No burnt wires either. Timing is perfect. New cam and crank sensors. Letting her sit for a few minutes, she starts right back up. All wires from the rails are fine as are all connections. Switched the ASD relay, no help, wires to it are fine as well. Fuel pressure and compression tests were good. Everything works when she shuts off except the injectors. Every mechanic I know, which isn't a few, has no idea. No error codes. OBD computer didn't lose connection with the PCM on shutoff. I'm at a loss as to what is causing this.

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  • Kaela Barrett
    Kaela Barrett Oct 23, 2013

    Crappy image but this shows it's not actually overheating.

  • Kaela Barrett
    Kaela Barrett Oct 23, 2013

    Oh and since my compressor clutch is locked up the A/C is always off



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  • Cars & Trucks Master
  • 49,140 Answers

Water temperature at 230 Degrees F is at boiling point in a pressurized system and it is shutting down because the CPU is reading possible damage to the engine . I suggest you find out why the coolant temperature is so high as 212 f is boiling and 220 would be maximium. I suggest that the sensors are controlling the CPU and if so there would be no fault codes recorded . Check the radiator for flow restrictions and check the compression for head problems.

Posted on Oct 23, 2013

Testimonial: "230 is what the specs call for for the fan to turn on. 195 for the thermostat to open. There are no restrictions. I flushed the system when I replaced the water pump and thermostat. Compression is fine. Seems 230 is actually right for this car..."

  • Bill Boyd Oct 23, 2013

    I am close -230F is 110c where I am . 195 for opening is 90.5 c which is on the upper end of the starting temp for a thermostat. Check the water temperature sensor has not gone high and is causing the problem.. I am suspicious that the fan is required to turn at overheat condition as experience shows that fans start about 10 degrees above thermostat opening as hot water is easier to cool than boiling water. Go back and recheck the water temperature sensors for the basis of the problem



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SOURCE: Won't run

There are to many things that can cause the no start. Here is a link that can help you understand the possible problems and links to how to retrieve the DTC codes which is activating your Auto Shutdown relay.
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SOURCE: engine cranks wont start

i do believe that's what it is if it will not let get a diagnostic or if it will not let you access the computer the computer is bad.

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SOURCE: Car runs fine for 5 Sec then loses spark thru ASD

The inertia switch is in the rear of the car most times in the trunk area\

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SOURCE: 1994 dodge intrepid would cut

Do a compression check, if you have lost compression on 2 or more cylinders try replacing the timing belt. If the compression is good across all cylinders and you have an alarm installed by pass the alarm by removing the in line fuse from the power line or cutting the power wire for the alarm.

Posted on Nov 02, 2010

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