Diagnose a problem

carney91

New Member
I've got a 1990 Acura Integra LS with an 01 LS motor in it. I had a surging idle previously and replaced the iacv, the tps, tightened down the fitv (the cone thing) i believe is what it is called and this fixed my surging idle. I tightened down the tensioner for the ac because it was super loose and wouldn't blow cold. I went to pick my wife up with the car running great, sat in the parking lot for 20 minutes and the car overheated with the ac full blast, it lost a lot of coolant through broken hoses that i missed before. I put new coolant in it and the surging idle came back. I do have an oil leak where the valve cover is and the side plate, could this cause another surging idle or did i blow a head gasket? I tasted the oil in the pan and it wasn't sweet, it is still the consistency of oil and isn't milky, it shouldn't be after one day. I had the car towed home so I didn't mess anything up any further. Another mention, the heat no longer blows hot when switched on.

The car has a few issues that I knew were there before, the egr valve needs replacing and the fans are on from the moment you turn the car to the on position.

This is my first integra, and my first time posting on here.

Thanks in advanced.

Chris
 

carney91

New Member
osiris19 said:
Bleed the air out of your cooling system.
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I attempted to do this, I read that all i needed to do was open the radiator cap and let the car run until the fans kick on. Is this right or are there more things to do. My fans kick on immediately when the key is turned to the on position. I opened the radiator cap and let the car warm up and it stays stationary on the temp gauge about an 1/8th before middle. The car just continues to surge on its own.
 

osiris19

Active Member
To bleed your cooling system, remove the radiator cap and set it aside. Ensure you have proper fluid levels in both the reservoir and the radiator. Set your climate control to full heat, and full blower operation. Start the engine and let it warm up and idle. After it has warmed up, place a porous rag over the cap port to prevent spillage of coolant around the radiator. Hold the throttle at about 2000 RPMs for a few minutes to bleed any excess air. Confirm air is bled, and then shut the engine off and top off fluid if necessary.
 


carney91

New Member
osiris19 said:
To bleed your cooling system, remove the radiator cap and set it aside. Ensure you have proper fluid levels in both the reservoir and the radiator. Set your climate control to full heat, and full blower operation. Start the engine and let it warm up and idle. After it has warmed up, place a porous rag over the cap port to prevent spillage of coolant around the radiator. Hold the throttle at about 2000 RPMs for a few minutes to bleed any excess air. Confirm air is bled, and then shut the engine off and top off fluid if necessary.
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This kind of worked, it had poor idle, this fixed that issue, but still has a surging idle. There may be air in the iacv, how would I go about getting it out?
 

carney91

New Member
osiris19 said:
Air is trapped somewhere, or you have a vacuum leak. Check all your vacuum lines and make sure nothing is punctured or ripped.
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I'll double check my vacuum lines in the morning and post back. I might pull off the iacv and see if I cant get the air out of there somehow.

Thanks for your help
 

carney91

New Member
So I bled the air out and it's still surging. I can hear the either the iacv or the fitv sucking air from a hole in the throttle body. Not sure if it is supposed to do that.
 

carney91

New Member
I unplugged the vacuum hose the egr valve was hooked up to and the surge stopped. The vacuum hose has a oh so slight vacuum on it, so miniscule that I plugged it and there was no effect on the car.

That's where the vacuum hooked to the egr valve led to. Not sure what to do about the egr valve without a hose now.
 

96LSteg

Jemel
it wont affect the fuel mileage as far as i know. Its an emissions component. If you are in a location which does emissions testing the dont remove as you will fail.
 

carney91

New Member
96LSteg said:
it wont affect the fuel mileage as far as i know. Its an emissions component. If you are in a location which does emissions testing the don't remove as you will fail.
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I've heard mixed things (yes and no) about it affecting mpg, but I don't live in a place where emissions testing is necessary so I'll block it. Thanks for the input.
 
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