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Old 09-27-2016, 03:18 PM   #2
blk95lumina
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Re: 1995 Lumina 3.1L LS - Not Locking 4th Gear

So after further driving and closer observation, it seems the problem was Not a missing 4th but rather it was not locking when cruising in 4th. However, I just drove it around and now it is locking. Guess I just assumed it was not hitting 4th b/c I did not see that last little drop in RPM when cruising.

My theory now is that a leaky brake booster may be affecting the shift modulator and causing the shift RPMs and lockup to be just slightly higher than I am accustomed to.

Is this possible or am I headed down the wrong path?

Thanks.
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1995 Lumina LS Sedan 3.1L - 215K mi - Daily Driver
2002 Accord EX Sedan V-6 - 209K mi - Wife's Daily Driver
2000 Silverado LS RCSB 5.3L - 168K mi
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