Can over heat cause by failure of water pump?

Question edited for clarity.

No to both. The water pump is chain driven and takes water from one side and pumps it out under pressure from the other. The thermostat is fully enclosed in a housing with no access to oil.

Oil in Coolant only comes from a failed head gasket where the oil and water channels are in close proximity and under combustion pressure of hundreds of pounds.

Water pumps are designed to pump water through the engine, radiator, and heating system. Water pumps will not cause oil to enter the cooling system.Oct 4, 2016

Q: Can a bad water pump cause water in the oil - YourMechanic

Water Pump
https://shop.advanceautoparts.com/find/nissan-maxima-water-pump

Thermostat Housing
https://www.google.com/search?q=nissan+maxima.+thermostat+housing

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Nissan fuel pump recall : Nissan Altima Common Engine ...

repairpal.com > Problems > Nissan > Altima

Nissan issued a recall on the fuel pump for premature failure. ... I am in need of a newfuel pump and scared to drive my car and its leaking ... pump and fuel filter located and how can i access them if i wan to replace th. ... 2000 Nissan Altima.

Fuel pump and fuel filter - 2003 Nissan Altima - RepairPal

repairpal.com > Questions > Nissan > Altima > 2003 Nissan Altima

Mar 25, 2009 - Where is the fuel pump and fuel filter located and how can i access them if i wan to replace them?

Fuel Pump Replacement Cost for Nissan Altima - RepairPal ...

How To Replace Fuel Filter on Nissan Altima 2001 - YouTube? 6:46https://www.youtube.com/watch?v=Vwg2wm13ilMOct 25, 2011 - Uploaded by roluardoHow To Replace Fuel Filter on Nissan Altima 2001 ... How toreplace a 2002 Nissan 3.5 Maxima Fuel Filter 2000-2004 pt 1 - Duration: 14:20.fuel hose replacement. Car fuel leakage. fuel pump ...? 5:30https://www.youtube.com/watch?v=BPGaxxkK71cApr 4, 2014 - Uploaded by LearningZoneHere I am going to illustrate the fuel hoses (fuel lines)replacement for Nissan Sentra ... Fuel pump leak fix - quick and cheap - Duration: 11:16.

Check radiator for flow. Blockage. Should have no cold area when car is hot

Its likely the tenisinor was the cause of the alternator problem in the first place its a big ware part leeding cause of belt failure water pump alternator power steering and ac compressers . You would be wise to replace it 96 likely has never been done .And its far cheaper then all of the above parts 20 to 30 dollars

Heat Shield is loose - it's flopping around. Sounds like an engine issue, but it's not.

I had the same problem on a '93 Altima & again on my 2003 Maxima a few months ago. A local garage fixed it for free both times. For the Altima, he just removed the shield. He advised that I do not park on high, dry grass as contact with the grass might start a fire (around here, cars are usually on pavement all the time - the grass thing was not an issue - and, there were no fires). On the 2003 Maxima, the garage was able to replace the rusted out clamp using some scrap material they had lying around. The heat shield was resecured into position. No more pinging.

I had Nissan take a look at the 2003 Maxima repair afterwards. They said the garage did a nice job.

It sounds like water pump may be your problem. It circulates a 50/50 mixture of glycol (or some form of) and water through the engine block and cylinder head and back through the radiator. In the radiator the mixture is cooled when air passes over the fins of the radiator. This is accomplished by driving or a mechanical/electrical fan when stationary. The water pump also circulates the mixture through the heater core giving the car heat. If the water pump is not circulating the water back to the radiator to cool, it will overheat. More heat is caused by the engine when driving (much less heat when idling), hence the overheating while driving.
I hope this helps and good luck!

for the 2003 it sounds like maybe the tranny cooler is getting clogged.

yes a bad water pump can keep heat from getting to the inside of the car. it circulates the water through the engine

You need to replace the thermostat in the radiator, they are very inexpensive and most times you can replace it yourself, if that doesn't help, drain the radiator and buy a drain kit and radiator cleaner, it will remove rust corrosions and anything else blocking up the flow, replace fluids and check to see if it runs properly, worst case senario is that your water pump needs to be replace cause Nissans are notorious or I should say Older models are and water pump seems to be the thing that goes out before anything else

Electronic throttle assembly failure, which has throttle position sensor built into it, that is a sensor for the transmission and tells the computer where the throttle is to adjust/shift if needed. I would look into the throttle assembly.