Would this be a bad heater core. I have to tap(hit) on my heater core to get my heater to work and kick on. So, could it be that my heater core is going bad or what could the problem be.

 

how exactly are you hitting your heater core? it's pretty darn well covered up.... what are you actually hitting?

 

Bet your hitting the fan under dash on passenger side.

 

time for a new blower motor.
if you are handy you can sometimes fix a bad one by drilling into the end and spraying WD40 into there.

 

i used to hit on my dash to make my blower motor run and one day it didnt come on as i was hitting on the dash...so i ran to the JY and pulled the motor paid 10 buks came home installed and was enjoying my heater and A/C


so time for the new blower motor maximatag

 

im hitting a black circle thing. now thinking about it it is a blower motor. how hard is it to change one of those.

 

if you can see it, you can replace it.
Book time is .8 hrs

 

can you hear your your fan not working and then working after you hit it?

a little background for everybody else here 1993maximatag has been having problems with the engine temp going up and down. heater doesnt work when engine temp is high... which sounds to me like air in the cooling system correct?

The link below is his previous cooling system thread

http://forums.maxima.org/3rd-generat...ng-system.html

 

well it's probably that he needs to bleed the system but also replace the blower motor.

 

from what i understand from texting with him he heater works when the engine temp is normal but not when the temp gets high. what i am thinking is happening is air collects in the heater core causing fluid flow issues. I was thinking that when he hits the fan area under the dash it is causing enough vibration to cause the air to migrate elsewhere thus causing the heater to work

 

so you are thinking that he is "burping" the system when he hits it?
not the craziest thought I've ever heard.

 

i am just going to change the blower motor and get cooling system bled

 

Would like to ask for help regarding my Heater Core please call

 

there was JUST a thread on heatercore replacement within the last month. try searching.

 

hope I can make it to a jy today and see if I can find a cheap blower motor and change it out today

 

i changed the blower motor out in the parking lot of a junk yard and works fine so i hope i can get to changing the t-stat today because there is not air in my cooling system the t-stat is stuck open well i will let you all know when the issue is solve and fixed