Question about 1998 Dodge Intrepid

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Dodge Intrepid 1998

My dodge intrepid 1998 just stopped on the road and giving me code P1684. Engine is cranking up fine but wouldn't start. Any idea what P1684 means, please help.

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  • ckoz21 Sep 17, 2008

    My 1998 Intrepid did the same thing but a few times before that it would crank but fail to start when driven a few miles to the store. When I came out, it wouldn't start. If I let it sit for 10 or 15 minutes it would eventually start but sometimes would run a little rough. I have it in the shop now and my mechanic doesn't sound too optimistic about a solution.

  • Anonymous Nov 14, 2008

    Engine is cranking buit wont start after I change Spark plugs, I have check and rechecked sprak plugs. It is a 98 Dodge Intrepid 3.2 V-6

  • ksueran Dec 11, 2008

    my car will almost start but wont and thats the code that comes up p1684


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I have a 1998 dodge intrepid also had a starting problem...... changed the crank-shaft sensor and the cam-shaft sensor and is now running fine. hope this is helpful to you.

Posted on Nov 19, 2008

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I suffered with this problem for 2 years before I fixed it. I actually thought of it while lying in bed waiting for sleep to come.
I had changed everything - starter, battery, alternator, battery cables. It ended up being the green fusible link wire (about 10 or 12 gauge) going from the positive battery to the alternator (starter?).
A fusible link works like any fuse or circuit breaker -- if it gets too hot, it cuts out and won't carry a charge due to the high resistance in the heated wire. The reason your car will start again after 15 minutes is that it has cooled down enough to carry the charge and complete the circuit to start your car.
It seems that the fusible link, once it gets older, develops more resistance and won't carry as high a charge. It simply refuses to carry the charge that is required to start your car. And it gets hotter quicker.

Posted on Sep 21, 2011

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I have the same problem, the code indicates that you may have a low battery but I was told it was because I put a new battery in and it needs 50 starts before the computer knows that, in the meantime we are all suppose to put our lives in the hands of God I guess as no one seems to know the solution as I have driven mine over 50 starts so it can't be the 50 start thing. It just turns off with no brakes or steering until I reset the key to off and then to on. But it has gone with a 2 hr. span of time before it will start again. Like another owner I can drive to the store and then come out and it will not start, turns over fine but will not catch...I am afraid to drive it. Plus on my own I took it to a state emissions place and because the computer will not communicate with their computer it has failed. The state has told me the 50 start thing is nuts, after changing a battery you usually can drive it about a week and then they should be able to communicate with the computer...but nothing. This isn't a solution to your problem but maybe it will help in some way...I have been told it could be a wire from the battery to the computer, it could be a wire in the wiring budle or it could be the brain of the computer and also it could be a hole or crack in the distributor cap, but wouldn't that show up as a different code??? Let's try to help each other and if anyone finds a solution let's keep the info flowing.

Posted on Sep 18, 2008

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p1684 means the battery has lost power or been disconnected.u have nothing to do if your me machine refuse to light over. sounds like possibly a cam sensor or possibly a theft key issue.
have you checked for spark?
i suggest for the first step to get a starting cable and to see if start

Posted on Jul 28, 2008

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