Question about 1997 Dodge Intrepid

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Keep blowing the engine control fuse after I start the car and rev the engine in idle or once i start driving it and punch it to take off

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  • leroybee Apr 05, 2011

    I washed it but not under the hood no other electrical was touched

  • leroybee Apr 05, 2011

    It was the next day after I had already drove it to work and that is over 50 miles to work then I started to drive home and it started it blew the fuse and coasted to the side of the road so I looked under the hood and found the fuse blown so I grabbed a fuse from my tail light and put it in then drove home but when i went to pass a car up I punched it and it blew again so I changed it once more and drove all the way home no problems pulled in the drive way and put it in park and rev the motor and it blew again.

  • leroybee Apr 06, 2011

    Hi I did not have a meter but I unbolted the big wire from the alternator and it blew the fuse so then I hooked it back up and unplug the the other plug that has a green wire and a green with orange stripe and it did not blow the fuse so what do you think now . also I wanted you to know you have been a lot of help so far thank you

  • leroybee Apr 07, 2011

    thank you for the help I will go get it tested

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  • 274 Answers

Hi there! There is a few things that could cause this. High voltage output from the alternator, moisture in the fuses box and a short circuit. Have you dont any recent modifications to the car involvine addidnt electronics or maybe washed the car?

Posted on Apr 05, 2011

  • 4 more comments 
  • Kelly Comstock
    Kelly Comstock Apr 05, 2011

    How soon after you washed the car did this issue start happening. Was it immediately or a few hours or days later. Just to clarify, did you wash it yourself or take it through an automated car wash.

  • Kelly Comstock
    Kelly Comstock Apr 05, 2011

    Ok. That was a perfect answer, exactly the kind of information i am looking for. That tells me that one of two things is happening (or both):

    1. For whatever reason your alternator is over reaching its nominal range

    2. A hot (power) wire has bad insulation causing a short circuit


    Alternators, when spinning put out anywhere from 13 to 14.5 volts of electricity to charge the battery and run the other components. Usually when an alternator goes bad it will undercharge or not charge at all, but occasionally they will output too much power. When your car is at idle it will put out, lets say 13.9 volts, and when the higher the RPM's the alternator spins faster increasing the output, again lets say 14.4 (every car is a little different, there are just for figures) So i think that when you accelerate, the alternator is pushing more than the safe voltage (15+)

    If you have a bad hot wire, the act of raising the RPM's of the alternator in combination with the short will cause the fuse to blow.

    If you dont have a multimeter or a battery/ alternator tester you can go to somewhere like Autozone, Napa or Car Quest to test it for you for free.

    I am really confident in one of these two. I had a similar problem with the fuses and relays blowing out for my fuel pump from a bad wire in my dash. When i accelerated... bla... no fuel.

    Let me know what you think and please rate if this helps (or doesnt help).

    If you have anymore questions please feel free to ask, I am here to help :)

  • Kelly Comstock
    Kelly Comstock Apr 05, 2011

    Any luck? Do you still need help?

  • Kelly Comstock
    Kelly Comstock Apr 05, 2011

    Has your question been solved? It is showing in my unsolved que and if it is solved you mark it as helpful and rate the solution.

    Thank you

  • Kelly Comstock
    Kelly Comstock Apr 05, 2011

    Has your question been solved? It is showing in my unsolved que and if it is solved you mark it as helpful and rate the solution.

    Thank you

  • Kelly Comstock
    Kelly Comstock Apr 06, 2011

    I am glad to help. Sorry for the delay, my phone notified me that you responded the my son brok my router so i have to use my phone and its slow. The alternator needs to be tested. If the car wont make it to the parts store you may be able to rent a battery load tester.it will check the alternator output. I am confident that its a bad alternator or a grounded wire/short circuit.

    ~ kelly

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