Question about 1992 Acura Legend
Try the vehicles vss (speed sensor) it will definitly cause the speedo to stop working and the hard shifts. When your vss goes out it automatically goes into LIMPIN mode to protect the transmission from from damage. the vss is located next to the oil filter and looks similar to small distributor.Its about 130-150$ but it should solve the problem. I have been doin transmissions for about 8 years i hopes this helps you.
Posted on Sep 02, 2008
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Posted on Jan 02, 2017
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Oct 15, 2016 | 1996 Mercury Sable
The BCM detects a loss of GMLAN communications with the PCM/ECM.
The IPC detects a loss of GMLAN communications with the BCM.
The only way to diagnose these problems is with a factory scan tool , this will check inputs an outputs at the PCM an BCM to the instrument cluster . This avoids guessing an playing the parts game. Your best bet would be to take your vehicle to a qualified repair shop .
Same thing with trans not shifting out of first gear , could be a shift solenoid ! Does it shift manually , moving gear selector through the gears ?
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