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Discussion Starter #1
Limp mode speed sensor fix

One of the common problems with our transmissions is the input and output sensors that go bad

When the input sensor goes bad your car will only drive in 2nd gear, this is also known as limp mode

When the output sensor goes your speedometer will not work

Both sensors are on the driver's side of the transmission and require a 1" deepwall socket to remove, you may also need some extensions to reach them

Here are the part numbers for both:

Mopar 4800878 Input Speed Sensor
Mopar 4800879 Output Speed Sensor

If you buy them form the dealer expect to pay about $50.00 for the pair, many have bought from www.oem-car-parts.com or local auto parts stores and found them much cheaper

One word of advice, if you have one bad sensor spend the extra money and replace them both, well worth the extra $$ to avoid having to crawl under the car again if the second one fails

here's a pic of the sensor location

 

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This is one of the issues with the new site platform. Searches end up with results from nearly 20 years ago rather than results that more specifically answer the question being asked. How is your fluid level and has the fluid/filter ever been replaced?
 

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Woober Goobers!
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And what are the actual code numbers.
 
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