So i replaced my heater core a week ago and my heater newer really blew hot air again after the heatercore replacement it blew warm but not hot so i decided while i was changing my oil today to flush the coolant again and get all the air bubbles out so it seems like i got all the air bubbles out and the heater is blowing hot but not as hot as my integra which makes you sweat and its a 94

so now the heater will start off hot/warm but that progressively keep getting colder and colder but newer cold air just slightly warm more cold... what could be the problem???? i got all the bubble out of my system seems like the coolant is fresh anything else i can think of is my t-stat

 

How did you bleed the system?

 

Put the front end in the air filled up the coolant container and radiator set the car down put.heater on warm so its open with the cap off squeezed the lower fax hose tobget big bubbles out started the car and let it run till got to operating temp and than reved it between 1.5-2k rpm every 30 sec or so after 20 mins there was no bubbles coming out anymore put the cap back on

 

u have a bad thermostat. change it and rebleed.

 

But wouldn't a bad tstat make my temp gauge not operate right but the tstat would make the most sense

 

Well actually looking at it now in my integra the temp gauge Jw normal even with it being cold outside the one in the civic seems low like at 1/4 instead of being before the half mark like my dc

 

It could be a bad thermostat.

 

ill go to honda on monday and buy a new tstat thanks guys

 

i think its a myth that honda tstats are better, i have used countless stant tstats with zero issue. obviously do what you want but its not necessary.