Weird Overheating Problem

bikerbum2004

New Member
Hello all!
I've been having a weird overheating problem with my girlfriend's 93 Integra. It would start up and run fine for the first 10 minutes or so at about 45% of the gauge and after that it will rise to about 80% of the gauge and then fall back down to 45%. It repeats this process until it boils out all of its water. She ended up running it hot and the radiator sprung a leak. I have replaced the leaking radiator and I also replaced the thermostat during the winter. Also since replacing the radiator it has had some trouble starting up. When it does start there is a big puff of white smoke so i'm thinking i'm going to have to replace the head gasket.

I ended up taking out the thermostat to see if that made a difference. It now takes a long time to reach operating temp, which I thought it would never reach operating temp, but when it does it doesn't fluctuate

I'm just trying to figure out what is causing such a problem so I can fix it all at one time.

It has a new radiator, thermostat, and I have bled air out of the system numerous times.
 

Fotop

New Member
blown motor?

I am having almost the same problem I have a 1990 integra 4 door with a 2000 b18b1 wiith a gsr 5spd tranny. it just started over heating on me for no reason in my eyes. while it was sitting still in my parking lot it over heated with both fans on ( they are rigged to stay on when ever the car is on). it doesnt smoke much than the normal tuner does with dcsports manifold on it. any ideas what it could be? btw it doesnt leak at all..
 

Ganyon

Active Member
You could have a bad headgasket. The car doesnt have to smoke for it to be bad. My car overheated, ended up being the fan switch, fixed that and it kept overheating, changed the headgasket and it stopped. Car never smoked or anything.
 


bikerbum2004

New Member
Ok, so I'm going to replace the head gasket. Is it also advisable to replace the water pump/timing belt while ive got it taken apart?
 


djzachtyler

Looking for my next Teg..
whoa whoa whoa... before you go and replace the headgasket... get a block & compression test done & post results here...

it could be a water pump issue if you have ruled out radiator, Thermostat, radiatr cap, and fans...

the 2 above tests will tell you if you have a bad HG. if you pass both of thse, do not have any other symptoms I'd focus on the water pump or other cooling components
 

BrokenTalon27

W.F.O
I'm with Zach on this one. Have you pressure tested the cooling system? You may have a heater hose leaking coolant or some other issue.
The compression test is a must before you start pulling shit apart.
Pull a the spark plugs and look down the tube with a flashlight(or preferably a boroscope) and see if the piston tops look clean or still dirty. If they look like they have been steam cleaned the headgasket leaking could be the cause.
Also, get a funnel that has the radiatior cap adapter for it. Fill it half way up the funnel. Turn the car on and let it come to operating temp. Rev the motor to about 3000rpms. If you see bubbles come up into the funnel, you have a blown headgasket.
Both tests help you to find out if you have a bad head gasket, the first is not conclusive on it's own though. The second isn't necessarily conclusive but I have yet to see one bubble that didn't have a bad HG.
 
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