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Discussion Starter · #1 ·
132k miles drives runs great

does not return to first gear so it is sluggish when getitng going from a stop

900rpm when coasting foot off the pedal


2100 when you return to the pedal to maintain speed again


interesting.


any ideas?

the owner lady says that some days its fine, and other days like today it does this

randomly

the engine itself (4.3L SFI) runs beautiful after we replaced wires cap rotor and plugs a bit ago
 

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Really, the first and only place to start. Is to hook a scanner up and watch the data. To see if the computer is commanding a 1st gear start. You need to seperate the internal from the external, one way or another. Other than that, its just a guessnosis of a bad PCM, AFL bore wear, low fluid pressure, manifold pressure switch and some other things.
 
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