Question about Chrysler Cirrus
Which speed sensor? I could be confusing models here but usually there are two. one sensor in the front and one in the rear.
Actually the speedometer head would not cause the limp home mode. The bad thing is that there are a lot of things that could cause the limp home mode from solenoids clogged in the transmission to a bad wire connection. When a machine goes into limp mode it automatically severs all the other connections such as to the speedometer.
Posted on Apr 27, 2010
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 .
You should have a Check Engine light. Go to a major chain auto parts store and they should read the ‘code’ for free, then go to rdtiburon.com and ask what the code actually indicating or is really bad to your car. They will advise you what you ought to do.
Because you replaced the speed sensor and are still experiencing the problem, we suspect that you have a faulty speedometer cluster.
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Posted on Apr 27, 2010
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Posted on Jan 02, 2017
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