It better be. I know where you live, I will come and take all your food LOL

 

Now everything is all back together with a new water pump and the sensor's back in the intake.

Could this have impacted MPG? My Blazer has terrible MPG. About 5-7...

 

that bad? Yikes, first off, pull your dipstick, smell it, does it smell like raw fuel mixed with oil? Is your truck throwing any codes?

 

Pulled it, didn't smell anything but oil. It runs pretty well. I've replaced a ton of things on it since it was sitting for about 2 years. Injectors, injector hoses, fuel pump, fuel filter, spark plugs, plug wires, oil, oil filter, flushed the radiator/engine, drive belt, alternator, starter, and the battery.

 

That's a very thorough list of replacements. Are you getting a trouble code for the coolant temperature sensor? A sensor misreading too cold will tell the computer to dump too much fuel into the engine. I had that exact same problem on my '92 GMC Vandura. Replacing the temp sensor took the mileage from 13mpg to 17mpg.

 

I don't have a scanning readout to check the codes yet. I'll stop by an auto parts store and get them to read it for me.

By the coolant temperature sensor, are you talking about the thermostat? I don't know that much about the cooling system, just the basics.

 

An auto parts store most likely won't be able to pull those codes. Use the paper clip method and count the number of time the "Check Engine" light flashes. You can search the Internet to find the procedure.

There are two sensors that measure the coolant temperature on your truck. The temperature sender is in the passenger side cylinder head. It's a one-wire sensor that just provides information for the temperature gauge. The important sensor is the coolant temperature sensor which is next to the thermostat housing in the intake manifold on top in the front of the engine. That's the one you want to check. It's a simple thermal resistor so you can check it with a digital multimeter and compare the resistance to a chart of values at certain temperatures.

 

Yes, I found that out yesterday when I went to Advance Auto. A shop next door wanted $20-up to pull codes. Eh, not worth $20, IMO. I'll look up the paper clip method.

Thanks for the info!