I have a price pfister single handle kitchen faucet How do I adjust the water temperature? Water is not hot enough

Back to the basics...did you turn the hot water shutoff back on? Is it a multi-turn shutoff or a 1/4-turn one? If it was old, and multi-turn, the washer could be shot, and it is all clogged. Try disconnecting the hose and see if you can get any flow into a bucket from the connection.

There could be some crud caught inside of the cartridge, so you might need to remove it and flush it out. Price Pfister single handle sink faucet no hot water

Make sure that the valve under the sink is fully opened.

If I understand correctly, you have single handled shower faucet.
Normally there is a wait for hot water to arrive at faucet.
But now hot water is already at shower faucet.

Single handled faucets have a mixing area inside valve where hot and cold come together before going into sink.
This mixing valve can have crossover where the hot and cold can pass through to each other even when faucet handle is off. When single handle faucets get old, this can happen.
How it happens:
For example another faucet is turned on inside house, and pressure differential between hot and cold causes hot water at shower handle to pass through mixing area and into cold water line.
So if another faucet has been run, then that lets hot flow to faulty single handled shower faucet.
To confirm this is the problem: turn on other faucet and put ear against shower faucet to listen for moving water.
This condition may also signal there is a water leak.
The problem is not harmful, but will draw cold water into water heater each time, and is energy wasteful.
Replace faucet or have plumber repair problem.

I have the same problem with my Ashfield faucet.
I am going to contact Price Pfister and try to get a new 'cartridge'.

On another note, my Ashfield towel rings are also broken. The connection where the two pieces meet is so weak it cannot handle daily use. I am going to bring this up with Pfister as well.

It doesn't seem like Price Pfister has very good products.

Call Price Pfister at 1-800-PFAUCET and ask them to send you a new hot and cold stem for free. These faucets are easy to repair. Here is the parts breakdown for your faucet. Turn the water supply of to the faucet. Remove the index button from the top of each handle. Unscrew the handle retaining screw. Pull the handle off. Unscrew the stems with an adjustable wrench; turn them counterclockwise. Install the new stems and reinstall the hanldes; it may take a couple of times to get them set in just the right positions. Slowly turn the water back on and open the faucet.

You can cap the lines at the tub faucet to rule out tub faucet. It maybe mixing there.

Faucet may be bad also the safety stop will alow you to change water temp it can be tricky to adjust water temp.

There is no seat replace cartridge/stem

check the sprayer handle by disconnecting and blowing into it and pressing sprayer handle and/or for possible kink at main body or hose by disconnected sprayer point hose into sink and turn on water. If no water the the diverter in main body is not working properly and needs to be reassembled or replaced

look for a scald safety screw adjustment. Remove the handle, and it is underneath. this is for safety of young children, and is factory set.

Your problem is a simple one.

1. Turn off water to faucet.
2. Place a towel(s) in the base of the sink(s) to prevent any parts from going down drain.
   
3. Remove the handle to the faucet. (single handle only)
   
4. If not a single handle then remove spout from faucet.
5. If a single handle remove cap carefully and any loose parts.
6. Gently turn spout side to side while lifting to remove.
7. You will see a hole with a very small valve where the water comes out to the spout on the base of the faucet.

1. Remove this valve (which is a backflow preventer) and replace.
2. Reassemble and test.
   

Problem solved.