Mechanics

OVERHEATING

1997 Chevrolet Tahoe • V8 4WD Automatic • 170,000 miles

My 1997 Tahoe is overheating. I have replaced the radiator, water pump, thermostat, and fan, but it is still overheating. It is also smoking like crazy out of the tail pipe. I hooked it up to a OBD 2 scanner and it threw these codes out:

MAF/VAF A circuit low input P0102
Close loop fuel control insufficient coolant temp P0125
O2 sensor heater circuit malfunction Bank 2 sensor 1 P0155
Enging coolant circuit low input P0117

What do I need to do to get this thing running right?


Avatar
StevenG21
June 1, 2011.



What color is the smoke you're seeing?

Wrenchtech
Jun 1, 2011.
It is a really thick white smoke.

Tiny
StevenG21
Jun 1, 2011.
That means you're burning coolant. You have either a bad intake manifold gasket or a more serious blown head gasket.

Wrenchtech
Jun 1, 2011.
What am I looking at price wise to get that fixed? I don't have the tools and know how to do that myself.

Tiny
StevenG21
Jun 1, 2011.
Nobody knows unto the engine is taken apart and the degree of damage is determined.

Wrenchtech
Jun 1, 2011.
Do you think $1000-1500 will take care of it?

Tiny
StevenG21
Jun 1, 2011.
Yes, it should

Wrenchtech
Jun 1, 2011.