Question about 1999 Chrysler Concorde

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1999 concorde. in limp mode with check engine

1999 concorde. in limp mode with check engine light on and speedometer wont work. also jumps when put in drive. replaced output speed sensor. didnt solve the problem. unhooked battery to reset the system. still no luck. had it scanned, codes came out p0500, p0371, and p0700. cant afford dealership or transmission shop. any suggestions?

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You should also replace the input speed sensor,they should always be done in pairs and i have had both of them bad on numerous vehicles,hope this helps

Posted on Sep 12, 2009

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Change both sensors at the same time. Once you change that, have the computers reset. That will take your transmission out of safe mode. But speedometer must work to keep transmission out of safe mode. Input sensor lets transmission know when to change gears. If it gets no signal at all it changes to safe mode 1st and 2nd gear. Which runs your RPMs really high. If you drove a lot with it likes this. Once sensors are changed. Check transmission fluid while its running and on flat ground, make sure you use the right transmission fluid, wrong one could cost you a transmission.

Posted on Oct 08, 2012

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Try this website to download a free manual

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Hi,
Your engine management and maybe even your transmission is controlled by the ECU. As such, many ECU units are fitted with a 'limp home mode'. When it detects that something semi-serious is wrong, it enters the limp mode, which means that the engine won't rev beyond a pre-programmed speed, you can't accelerate very fast, or you may indeed be speed-restricted to 40 mph or similar. The transmission may even stay in one or two gears. The alternative would be to either let you drive at regular speeds, with the danger of letting you trash your car or stopping you from going anywhere .
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Because you replaced the speed sensor and are still experiencing the problem, we suspect that you have a faulty speedometer cluster.
Please check this link and go through the article to have an indepth knowledge to your problem....

http://geekswithblogs.net/lorint/archive/2005/12/21/63765.aspx
Let us know if you want something else please accept the solution.
Thank You for contacting fixya.com

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