1997 Acura Integra overheating

REPMYKE

MEMBER
1997 ACURA INTEGRA
4 CYL
2WD
AUTOMATIC
141,000 MILES

I'v replaced my thermostat, radiator with a duel core aluminum to keep it cooler. My fans turn on when the car starts to get hot. I'v even replaced the fans. I got no water in my oil and no oil in my radiator.

When I drive it for extensive amount of time. When at high speeds or constant acceleration over time it starts to overheat.

When at a light coming off the freeway it starts over heating but right when I start moving the the temp needle drops almost instantly but at the next light it over heats again.

Its not a instant overheat just after hard driving or a long period of maybe 20 minutes.

thanks (i think its water pump) but looking for maybe other ideas

4 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi repmyke,

Symptoms indicates inefficient cooling.

Did you check if the coolant level in radiator is full? After replacement of thermostat and radiator, if any air is trapped in system, it would cause the symptoms described. Bleeding has to be done to remove the air pockets.

If coolant level is correct with no coolant losses, then apart from the water pump, there could be restrictions in the coolant passages.

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Wednesday, August 4th, 2010 AT 12:53 PM

REPMYKE

MEMBER
3 POSTS

The post prior waas very helpful. I will check the coolent to maintain tempature. Before I changed my radiator the issues were the same with full fluids. But I never bleed the system so I can release the excess air. Where could possible restriction be in most case it not in top or bottom hoses i'v removed and inspected. Would any of the descriped be a water pump. I'v read pages and pages of overheating issues but non describe my exact issues showing water pump. I'v pinched and throttled but the flow is there which makes me believe that it functional

well I know time is money so any help is greatly appreciated

thanks

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Wednesday, August 4th, 2010 AT 2:05 PM

KHLOW2008

MECHANIC
41,815 POSTS

With cold engine, remove the radiator cap and check the coolant level. If it is at the neck, then it is good.

When water pump is weak, it would usually overheat when running at high speed as well. That is also true if it is a thermostat or radiator fault.

Do the cooling fans ever stops when the overheating occurs?
Are both fans working when the A/C is turned ON?
Does it overheat when the A/C is turned on?
Are the cooling fans air flow direction correct? Sometimes when cooling fans are replaced, the polarity is reversed and that would result in inefficient cooling when moving slowly.

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Wednesday, August 4th, 2010 AT 2:36 PM

REPMYKE

MEMBER
3 POSTS

There is a few questions that you asked that I will address after work to verify and get results. The fans do continue to run after the over heating. I bought aftermarket OEM fan for the a/c it pull air toward the motor. When ac is on both fans work.
Its does overheat when ac is off & when its on.

I'm going to try to bleed the radiator system as suggested.
After that ill do a test run let you know how fans are operating when ac is on if its both or one and whats happens after over heat.

I have no problem putting money into the vehicle as long as result come of it. But so far its a money pit. Lol like most cars

thanks alot

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Wednesday, August 4th, 2010 AT 3:07 PM