Do you know what trouble code 21 is for a 97 chrysler concord would be?

look under the alternator

It takes special tools and training to trouble shoot this system for leaks. You need the dealer on this one.

Have you checked the computer for trouble codes ?
Are you getting voltage to the coil ?
Have you checked the ASD relay ?

First thing is to have the computer scanned for trouble codes.
My guess would be a torque converter or overdrive problem.

SAME AS BEFORE

Sounds like a transmission output speed sensor. The first thing you need to do is pull trouble codes. Most likely the PCM will have a p0700 code which means there are codes in the trans control module. To scan that you will need a multifunction scan tool. You local parts store may be able to help you with that or you may need to swing buy your local shop (they usually charge for this). If the TCM code has anything to do with the rear output speed sensor than I wouldn't hesitate to replace it. These are very common in all Chrysler transmissions. It will be located on the drivers side of the transmission towards the rear of the transmission. It will have a two wire connector, is usually a light tan/cream/yellowish color, and you'll need a 1" socket or wretch to remove or install it. Good luck, let me know if you have any further questions.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

it means your car has the obd2 code problem, you need a scan tool to diagnose the code, and then delete the code, i know this tool is helpful for your car. or you can take it to the chrysler dealer, they will check for you, hope help.

You will need to purchase a trouble code reader/eraser. Keep in mind, once you erase a DTC, the code will always come back if the PCM recognizes a hard fault code. This is a reminder that the vehicle needs attention. This reader/eraser is available at ant well supplied auto parts store for around $40.00.

I RECOMMEND REPLACING THE OUTPUT SPEED SENSOR..ABOUT 40 BUCKS..WILL CAUSE THESE OTHER FAULT CODES AS WELL

tammy i found some codes but u wont answer the phone...