I have a leak on my dishwasher main pump

no car stated?
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no year.?
(i guess you dont KNOW the books are indexed by above)

strike 3, out.

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Applications include the 2003 Isuzu NPR400

• The 4HF1 is an OHC direct injection engine of 4.33 L capacity. Peak torque is 285 Nm at 1,800 rpm, peak power is 116 PS (85 kW) at 3,200 rpm. Bore is 112 mm, stroke is 110 mm"

dis beast?

Could be network issues- check with your ISP.

This means the flood circuit is triggered. There is a leak in the dishwasher causing water to collect in the motor chamber. The leak is usually through the door seals or broken hose. Disconnect mains electric and water connections and pull dishwasher out from under kitchen bench. Tilt it from side to side to get the water out from under the base. Wait a little for water to dry up. Reconnect mains power and turn on to see if pump stops running. As mentioned source of leak needs to be fixed.

Could be too many things using electricity in house overloading

This is a anti flood activation. It is a safety device (polystireen float and micro switch at the base of the washer) that keeps the drain motor running due to water leak / spill detection. Dry the water and rectify the leak (normaly pipe or clamp leak) and this should solve the problem.

If your dishwasher leaks, check these:Main tub seal
Door gasket or seal
Water-inlet valve
Hoses

Main tub seal
Note… If the main motor of your dishwasher is mounted vertically, beneath the center bottom of the dishwasher, the following instructions probably apply to you. But if your motor is mounted horizontally, the pump isn't serviceable--you need to replace the entire pump and motor assembly.

The main tub seal is beneath the drain impeller. It prevents the water in the dishwasher from leaking out near the shaft of the motor. To get to the seal, which is inside the dishwasher, remove the:

1. Lower rack
2. Spray arm
3. Spray arm support
4. Wash/drain impellers


Then pry the seal out of its housing and replace it.


Door gasket or seal
Over time, door gaskets and seals harden and lose their ability to seal properly. You can't repair the seals. You need to replace them if they've begun to leak. 


Water-inlet valve
The water-inlet valve, itself, seldom leaks. But, the water-supply line from the house and the rubber tube leading from the valve to the inside of the dishwasher may leak. Tighten or repair/replace these as necessary.

The water-inlet valve could mechanically stick open. When that happens, the water continues to flow into the dishwasher, which then floods your kitchen. Turn off the water supply to the dishwasher, and replace the valve.

Hoses
Behind the lower access panel on your dishwasher are several rubber or plastic hoses. If the leak appears at a connection, try a new clamp. If that doesn't work, replace the hose.
thanks for using FixYa

Look on ebay you should be able to find replacements for all the items you are looking for.

My dishwasher will not heat up to temperature during cycles. Water remains cold, what parts could be a problem and howwould I test them

Simply the bearings on the main wash motor need to be replaced. Hardest part is to remove motor from unit. Assuming you have available tools including a medium sized bearing puller you could D.I.Y. bearings can be bought at your local auto spares shop.