Q:Mercedes 2000 ml 320. I changed radiator and water pump now car only runs half as worm than it used to. So now heat blows cold to little warm depending on how cold out side

If there is an air pocket in the system you will not get hot heat from the climate control system. If the heater worked OK before you replaced the water pump it's probably a stubborn air pocket. You need to raise the front of the car a good 12 and then rune the motor for 20 minutes with the radiator and reservoir caps removed. Have the climate control set to the hottest setting with the blower turned off or on low speed. Top up the coolant as the air bubbles purge. The heat coming out of the vents should be hot at idle, if it only gets hot when you rev the motor you still have an air pocket. Then try revving the motor up and down to 2,500 rpm and squeeze the upper radiator hose at the same time to get the air pocket to purge. If you can't get the air out you will need an expensive Airlift vacuum fill tool for the cooling system. Some vehicles such as Infiniti's will not purge the air with out using the Aitlift brand fill tool.

Q:The flow of the pump will be reduced, the speed will change, the power of the motor will change?

1, this pump flow reduction is not the reason for speed. Because it is not matching the motor frequency conversion, the frequency of power supply unchanged, the motor speed will not change.2, the flow of water pump down, the reason may be that the impeller due to cavitation or wear and tear smaller, second, the gap between the impeller housing change, and the impeller plug foreign bodies, and some of the suction port leak.3, it is possible that the whole system resistance increases, so that the work point of the pump left.

Q:Car started making noises right after hitting deer, week later car that has never had a problem began to overheat and mechanic says water pump went out and that it has nothing to do with hitting the deer.

It might If the water pump has lots of miles anything might make it go bad , Any accident will cause your car to act funny because it has not been disturbed

Q:I have an 1985 cadillac fleetwood hearse and the water pump is shot to hell. where do get a good cheep one.

any okorder and find the closest location. they are the cheapest option unless you just want to push the car and then that wouldn't cost you anything now would it.

Q:We're doing some droplet impact experiments and are creating the flow of water to our droplet generators by elevating our source of water. Unfortunately as the water depletes the pressure changes. We need to siphon off the water from our lower basin where the water collects and pump it back up to the source (around 6-8 feet up). What kind of pump do I need for this?

I presume you can’t use city water! Droplets probably mean very small water flow. You can try local used merchandise store. Often they have waterpik systems for a few $ They are piston type pump that means the output will be pulsating instead of continuous. Another option is a windshield washer pump. These are gear type, so provide a continuous flow. You would need a variable power supply to control the pump speed, therefore the flow. Good luck Hope this answers your question

Q:I replaced the water pump on my 1997 acura cl 3.0 v6 vtec. I set the timing how alldata said to. (Lined up marks on timing drive pulley and both cam pulleys) and put it all back together. Now when I start it the motor runs rough for about 45 seconds then it smooths out but won't rev past 3000 rpm. What are some possibilites it could be?

Ive seen this before. u replaced the water pump, which means u drained the coolant, replaced the pump, and filled it back up again. When u filled it back up u created big air pockets in the coolant system. Small air pockets are always in the system, but wont cause a problem. Big air pockets cause the engine to idle rough, like its misfiring. Then when u go to press on the gas it stalls, or it wont rev past a certain point. Ive had this problem myself a few times, replacing water pumps and lower radiator hoses. About the best thing u can do is just let the car run and idle for an hour, maybe even 2! Then rev it when its still parked at a higher RPM, just to flush out those pesky air pockets. I know it wastes gas, but thats what i think the problem is. Air pockets are something that most ppl dont think about when they drain and refil the cooalnt components.

Q:i have a 99 Mitsubishi Eclipse and my Car started to leak water and as soon as i start to put water it starts to leak and it wont take in the water that has on the side as well. what should i do or what do you recommend?

Check the hoses first.

Q:QDX is a submersible pump. What does "X" mean?

Q submersible pumpsD single-phase motorX downdraft

Q:Why should the water pump be opened in time after the pump is started?

The circulating water pump outlet valve is closed when starting, normal after the water outlet valve is opened, I found that, with the valve opening, the current is slowly sinking, you tell me why?, and the other is the opposite of the pump (with the valve opening current increases).