Question about 2005 Chrysler 300
Hello. The pcm is most likely the solution to your problem. Get at least one more chrysler dealership to give you an estimate on the repair and ask what warranty or guarantee they have. Joe
Posted on Apr 25, 2010
Check all the plug in connections that you see under the hood especially
the ones going to the transmission and transmission comp=TCM become a
faulty connection or bad comp can cause the transmission to not engage
into gear but from the codes it sounds the torque converter and solenoid
pressure switch pack or module inside the transmission is acting up.
The transmission system uses two speed sensors, one to measure input RPM and one to measure output RPM. These inputs are essential for proper transmission operation. Therefore, the integrity of this data is verified through the following checks:
1) Once in a particular gear, if the gear ratio varies from the correct gear ratio, the corresponding in-gear trouble code is set (DTCs P0734). 734 is "Gear 4 Ratio Incorrect".
2) An excessive change in input or output speeds indicating signal intermittent may result in the DTCs P0715 and/or P0720 being set.
3) If the common speed sensor ground circuit is lost, both sensor inputs will read the pulses from the input speed sensor when at a stop in neutral. Since the input speed sensor reads 60 teeth from the input clutch hub and the output speed sensor reads 30 teeth from the park gear, the result is an apparent speed ratio of 1:2 and may cause
the DTC P0740 to set. DTC p074 does indicate "torque Converter Clutch (TTC) no RPM drop at lockup". What this means is the TCC is engaged, but there is no engine speed drop when it does.
Once you have checked all the wire harnness, then inspect the PCM/TCM for any signs of damage, most salvage yards sell the PCM/TCM for around $30.00.
Thank you for using fixya and keep me posted, be glad to help you get your car running 100%
Posted on Apr 25, 2010
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Posted on Jan 02, 2017
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