2004 Chevy S10 keeps getting p0128
5

Asked by gra124 Feb 19, 2021 at 07:50 PM about the 2004 Chevrolet S-10 LS Crew Cab 4WD

Question type: Maintenance & Repair

I have replaced the t-stat, Engine coolant sensor, and the Air intake sensor and
I still will get a P0128 every other day.  The temp of the coolant when driving is
between 167-172.

1 Answer
155,265

james answered 3 years ago

You need a new 195°F thermostat. The engine must reach operating temperature (195°F) within ten minutes of a cold start up. Then remain at or slightly over that temperature when you're driving. Otherwise that trouble code will keep setting. Hope that helps! Jim

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