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2.5 TBI mystery
Posted to Technical Discussion Forum on 1/9/2019 34 Replies

I have another GM TBI mystery. This unit is a 2.5 A by the vin the ECM is 1227165 with a AUHX memcal which is correct by the application chart I have.

This vehicle idles too fast to suit the customer (about 1400-1500 RPM.) when cold (-32f) outside its more n... Login to read more.

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car Vehicle Data

1991 Chevrolet S10 2.5L

Engine2.5 L
Trans5-speed Standard

car Vehicle Data

1991 Chevrolet S10 2.5L

Engine2.5 L
Trans5-speed Standard