No heat... Please help

Do you have the air conditioning switch on? The fan will come on start up when the air pressure is below 60 psi or so. Make sure you don't have another set of valves as well, I have 4 total valves.

The coolant filter will look similar to a car's oil filter, and will usually be located near the radiator, although some can be kind of hidden down by the oil cooler (passenger side of engine behind the frame rail)

 

If the fans on all the time, she wont get warm...period!

 

New thermostats can be bad, had that problem. New seals must be put in with thermostats, and if they are not seated perfectly straight, the engine will not get warm from water bypassing the seals.

Also, the defroster causes the A/C compressor to cycle just like regular A/C does.

 

THE 2 BABES ARE IN MY SLEEPAH!!!


I have 2 valves down by the water pump and 2 up by the rear of the head above the oil cooler.

 

Here's some pics for ya
Coolant filter


Valves by water pump,which are very hard to see


And above the oil cooler

 

You'd be amazed @ the number of people that will argue that point. It's setup that way to keep the AC compressor seal from drying out from lack of use in the cold season.