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This is called "limp-home" mode. Chrysler's are notorious for it. When the TCM (transmissin control module) detects something wrong with the transmission, it activates this and it keeps it from shifting into 3rd to prevent further damage. This is where about 90% of people with this problem would get the transmission rebuilt but I'd say about 8/10 times its just an electrical sensor that has gone bad and will also cause the same "limp-home" mode to activate. One problematic sensor is the speed output sensor. If it goes bad, the transmission will activate this mode and the speedometer will not work. The check engine light should be on but the only code you will get is something like "transmission fault code set" and as far as i know the Chrysler Dealership is the only place that has the code reader that will read codes from the TCM, which is where the transmission fault code is stored. If one of the electrical sensors is bad, it will set a fault code in the PCM and it can be retrieved anywhere that has a code reader, like auto-zone. I'd recommend getting this done before looking into getting it rebuilt. Any other questions just email me, Zane, at sideburns2009@gmail.com
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What is the function of rear derailleur springs in a bicycle's gear shifting mechanism?
The rear derailleur springs in a bicycle's gear shifting mechanism help to move the derailleur to shift the chain between different gears. They provide the tension needed to keep the chain in place and facilitate smooth and precise gear changes while riding.
Why would your 89 740gle shift into a lower gear when you press the OD button on the shifter?
OD is a highway gear meant to maintain high speed with less engine effort, you should keep it off during regular street driving to prevent constant shifting in and out. When you are pushing the button it is dropping out of over drive and into the regular high gear, keep it that way until you are on the highway and your transmission will last longer.
Are there vacuum lines for a 1993 Chrysler New Yorker that would keep it from shifting?
No.
Why won't your boat motor go into gear when it's running?
Make sure you are shifting it at very low idle speed. Outboards have a built in mechanism to keep owners from shifting at too high rpm and damaging the drive train.
Are their special straps to be purchased to keep catcher shin guards from shifting side to side?
Try tightening the straps or crossing the straps. The tighter the gear the better
When should you use the optional gear shifting available in some automatic transmission automobiles?
You should use it every 40,000 miles to keep your transmission well lubricated.
What would keep a 1963 Olds Super 88 394ci 3-Speed Hydramatic from staying engaged in third gear when pressing on gas?
The downshift cable is probably out of adjustment, GoodluckJoe
Why would a 2002 Mercury Mountaineer automatic transmission start out in third gear instead of first?
yes this is how the transmission works is is most generally used to start out in bad weather such as snow to keep the rpms of the vehicle down to provide more traction to the weels to keep them from spinning
What will keep door mats from shifting?
pee on it
When driving a car fitted with automatic transmission what would you use 'kick down'for?
You would use the automatic transmission kick down to shift the transmission into a lower gear when you need to go into full throttle (FT) to pass another car or when the load on the vehicle becomes so great that shifting into a lower gear would increase engine RPM so the engine would not get lugged down. Different engines respond to "lugging" differently. Lugging an engine is not good on the engine, over time lugging an engine has been associated with burned valves and pinging (predetonation) and carbon build up. Most manufacturers have incorporated some means of down shifting automatically under full throttle an hauling heavy loads. Its a convenient way to keep the engine from lugging. The same thing can be accomplished by manually shifting the engine into a lower gear at the shifter, weather its at the column or in the console. As engine RPM's increase one can simply shift into the next higher gear to prevent the engine from over reving.
1993 4.0 oil blowing from dip stick help?
I would have to guess that you have over-filled your oil. I would recomend that you change the oil and see if it still does the same thing............ bad rings or clogged pcv valve If you are towing or climbing long grades you will need to keep your transmission in 3rd gear. Not drive. The transmission will keep shifting on you causing your oil to overheat and come out the dip stick.
What would keep an Allison transmission model MT640 from shifting from 1st to any other gear?
An Allison transmission model MT640 may fail to shift from 1st gear due to several factors, including low transmission fluid levels, a malfunctioning shift solenoid, or issues with the transmission control module. Additionally, a faulty throttle position sensor or problems with the hydraulic system could prevent proper shifting. It's essential to check for diagnostic trouble codes and inspect the fluid condition to identify the root cause. Regular maintenance and addressing issues promptly can help prevent such shifting problems.
