1998 Chrysler Concorde 184,000 miles - on the way to work today, the car's speedometer quit working, it stopped shifting out of Low gear, it dies when idling. The Check Engine light also came on during my drive home this evening (3-4 miles). The fault codes of P1684, P0700 and P1685 were presented when I checked them. I don't have a chart to determine what the codes mean. Do you know what the codes mean? Also, do you have a recommendation on what I could be my problem(s)?
Your speed sensors are bad, it's best to change both, when your speedometer don't work it throws the transmission into "limp mode" safety feature. Speedometer sensor tells the transmission computer when to change. So you only have 1st and 2nd. Best to change both speedo sensors just to keep them around the same age. Do it ASAP or it will cause so many problems with your transmission, flywheel, and torque converter. Once you change the sensors check transmission fluid while cars running on flat ground. If needed add the right transmission fluid, be absolutely sure it's the right fluid. If you put the wrong one in, have it flushed, refill, then repeat that again at 100 miles
Speedometer quit working-consider vehicle speed sensor.
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also 1998 concorde speedo died, then i noticed wouldn't shift out of low. exact problem other person had. what is the cause ? anyone?
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