Engine runs hot after radiator and themostat replacement

mickey513 · 03-17-2004, 03:18 PM

For my 94 Integra gsr:

I notice my engine is running hotter than usual after replacing my radiator and themostat. I replaced my radiator with a aftermarket OEM style replacement and a 180 degree thermostat. Before replacing them, the most the guage will go up to will be about 1/3 on the temperature guage. Now it's like 2 dots before the middle...WTF happen? I observe my radiator fan and they are coming on.

Rory Breaker · 03-17-2004, 03:58 PM

Did you bleed the system?

631 Teggy · 03-17-2004, 04:02 PM

Check for bubbles... You may have an air pocket...

stasi · 03-17-2004, 04:03 PM

From what it sounds like the temp is at what it's supposed to be.
My temp gauge always stayed at 1/3 up until I replaced the thermostat.
Now it sits just before the 1/2 line. Accornding to my owner's manual
the needle should be just under the 1/2 way mark.

importdude2000 · 03-17-2004, 04:05 PM

same thing happen to me
use to be 1/3 now its freaking 2 dots before mid...
i think i have bubbles but dunno how to take em out GRR!

ThePro · 03-17-2004, 04:38 PM

I have that problem, when I first had my engine put in, it was a little below middle (where it should be) but now it barely gets two dots..

The culprit? A bad thermostat. My thermostat was stuck open, a quick replacement and it is back to normal.

sleepin91teg · 03-17-2004, 06:28 PM

If you have bubbles, then you need to bleed the system, in order to do this, you need to take a 12 mm box wrench, and put it on the bleeder screw located, where the radiator hose, comes to the front of the head (b18a) crack the screw open, let some coolant come out, tighten it back down....DONE

mickey513 · 03-18-2004, 01:19 AM

Quote:

Originally Posted by sleepin91teg

If you have bubbles, then you need to bleed the system, in order to do this, you need to take a 12 mm box wrench, and put it on the bleeder screw located, where the radiator hose, comes to the front of the head (b18a) crack the screw open, let some coolant come out, tighten it back down....DONE

There must be another way becuase only the 94/95 Integra gsr had the bleeder screw. The newer models didn't. I did it this way once and mange to crack the water outlet housing putting the screw back on. Went to buy a new one and they didn't have the screw anymore on them, it was sealed up now.

andrewM · 03-18-2004, 06:12 AM

just take the radiator cap off and run the engine for 15-20 min. then refill and replace the cap.

WRTEG · 03-18-2004, 06:18 AM

Quote:

Originally Posted by andrewM

just take the radiator cap off and run the engine for 15-20 min. then refill and replace the cap.

listen to this guy

, i'd check for leaks around your rad cap also, you can take out the tube going into the over fill and blow in it and look around the cap and make sure nothing is leaking from there, if it's leaking you'll see it spit out around the cap. mine just cracked on me today and i have to get it replaced.

03-17-2004, 03:18 PM	#1
mickey513 Honda-Tech Member Garage is empty, add now Join Date: Jun 2001 Location: Bay Area, CA Posts: 1,791 iTrader Rating: (0)	Engine runs hot after radiator and themostat replacement For my 94 Integra gsr: I notice my engine is running hotter than usual after replacing my radiator and themostat. I replaced my radiator with a aftermarket OEM style replacement and a 180 degree thermostat. Before replacing them, the most the guage will go up to will be about 1/3 on the temperature guage. Now it's like 2 dots before the middle...WTF happen? I observe my radiator fan and they are coming on.

03-17-2004, 03:58 PM	#2
Rory Breaker Honda-Tech Member Garage is empty, add now Join Date: Feb 2000 Posts: 7,808 iTrader Rating: (0)	Re: Engine runs hot after radiator and themostat replacement (mickey513) Did you bleed the system? __________________ Nick - Integra & Forced Induction Moderator <FONT SIZE="4">Are you a DC Sports fan? This is your off-season kool-aid!</FONT>

03-17-2004, 04:02 PM	#3
631 Teggy Honda-Tech Member Garage is empty, add now Join Date: Dec 2001 Location: Long Island, NY Posts: 1,899 iTrader Rating: (0)	Re: Engine runs hot after radiator and themostat replacement (newgsrdriver) Check for bubbles... You may have an air pocket... __________________ Integra GSR: Boosted Stock Engine - 325whp 245wtq. Fit Sport: DD

03-17-2004, 04:03 PM	#4
stasi Garage is empty, add now Join Date: Jan 2004 Location: Jax, FL, United States Posts: 471 iTrader Rating: (0)	Re: Engine runs hot after radiator and themostat replacement (newgsrdriver) From what it sounds like the temp is at what it's supposed to be. My temp gauge always stayed at 1/3 up until I replaced the thermostat. Now it sits just before the 1/2 line. Accornding to my owner's manual the needle should be just under the 1/2 way mark. __________________ 1992 Integra LS - 133,xxx miles Still drives like new!

03-17-2004, 04:05 PM	#5
importdude2000 Honda-Tech Member Garage is empty, add now Join Date: Oct 2003 Location: Nor Cal Posts: 3,414 iTrader Rating: (0)	same thing happen to me use to be 1/3 now its freaking 2 dots before mid... i think i have bubbles but dunno how to take em out GRR! __________________ built ka-t

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03-17-2004, 04:38 PM	#6
ThePro Honda-Tech Member Garage is empty, add now Join Date: Feb 2003 Location: Lacey, WA, USA Posts: 842 iTrader Rating: (0)	Re: (importdude2000) I have that problem, when I first had my engine put in, it was a little below middle (where it should be) but now it barely gets two dots.. The culprit? A bad thermostat. My thermostat was stuck open, a quick replacement and it is back to normal. __________________ Car Show Tips Thread

03-17-2004, 06:28 PM	#7
sleepin91teg Junior Member Garage is empty, add now Join Date: Dec 2003 Location: I had 1000 posts, Ohio, 45805 Posts: 124 iTrader Rating: (0)	Re: (importdude2000) If you have bubbles, then you need to bleed the system, in order to do this, you need to take a 12 mm box wrench, and put it on the bleeder screw located, where the radiator hose, comes to the front of the head (b18a) crack the screw open, let some coolant come out, tighten it back down....DONE __________________ God Created turbo lag, to give V8's a Chance

03-18-2004, 06:12 AM	#9
andrewM Garage is empty, add now Join Date: Oct 2002 Posts: 135 iTrader Rating: (0)	Re: (mickey513) just take the radiator cap off and run the engine for 15-20 min. then refill and replace the cap.

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Engine runs hot after radiator and themostat replacement