Need help with D15 motor
Guest
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I have a 95 civic DX. The motor runs perfect.
Until it gets to normal running temp.
After it reaches normal temp and you rev the motor.
The car starts idleing up & down. Doesnt stop until you shut off and turn the car back on.
Does anyone know what this could be?
Until it gets to normal running temp.
After it reaches normal temp and you rev the motor.
The car starts idleing up & down. Doesnt stop until you shut off and turn the car back on.
Does anyone know what this could be?
Eat My Ass With a Spoon
Joined: Aug 2000
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idle air control valve get a chiltons or helms and look it up and fix it yourself.
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Livin' in Seattle
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Sounds like youve got a vacuum leak and the IACV is trying to pull a shit load of air out of the system but unable to. Might want to check your vacuum lines and see if any are leaking or off. Also make sure you didnt do some of those dumbass free mods and set your throttle cable too tight or open up the idle set screw too much.
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you may be able to just clean the iac instead of replacing it just pull it off the back of the intake manifold and spray the screen with a carb cleaner or fi cleaner. You can also try to tighten the FITV its on teh bottom of the t-body and has a brass plate on each end. I cant remember which end you need to remove but when you take it off you should see a white piece of plastic in the middle and a big screw like piece on the outside of the plastic piece. You can push the plastic piece down and take a large screw driver or more likely a gasket scraper to tighten the screw like piece down. To detect a vacumn leak if you dont have a guage you can take a propance torch turn the propane on but dont light the torch then run the propane along your vacum lines if your idle goes up then youve found where the vacum leak is. Also you might have air in your coolant lines bleed your coolant. If you do have air in your line youll need to figure out how it got in there cause a blown head gasket could be a possibility. If you suspect a blown head gasket check your coolant if its milky (oil and coolant mix) then youve got a blown gasket. Honda idle problems are a bitch.
Robster
Robster
Livin' in Seattle
Joined: Nov 2000
Posts: 2,813
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Originally posted by "Someone"
Originally posted by Robster
you may be able to just clean the iac instead of replacing it just pull it off the back of the intake manifold and spray the screen with a carb cleaner or fi cleaner. You can also try to tighten the FITV its on teh bottom of the t-body and has a brass plate on each end. I cant remember which end you need to remove but when you take it off you should see a white piece of plastic in the middle and a big screw like piece on the outside of the plastic piece. You can push the plastic piece down and take a large screw driver or more likely a gasket scraper to tighten the screw like piece down. To detect a vacumn leak if you dont have a guage you can take a propance torch turn the propane on but dont light the torch then run the propane along your vacum lines if your idle goes up then youve found where the vacum leak is. Also you might have air in your coolant lines bleed your coolant. If you do have air in your line youll need to figure out how it got in there cause a blown head gasket could be a possibility. If you suspect a blown head gasket check your coolant if its milky (oil and coolant mix) then youve got a blown gasket. Honda idle problems are a bitch.
Robster
Originally posted by Robster
you may be able to just clean the iac instead of replacing it just pull it off the back of the intake manifold and spray the screen with a carb cleaner or fi cleaner. You can also try to tighten the FITV its on teh bottom of the t-body and has a brass plate on each end. I cant remember which end you need to remove but when you take it off you should see a white piece of plastic in the middle and a big screw like piece on the outside of the plastic piece. You can push the plastic piece down and take a large screw driver or more likely a gasket scraper to tighten the screw like piece down. To detect a vacumn leak if you dont have a guage you can take a propance torch turn the propane on but dont light the torch then run the propane along your vacum lines if your idle goes up then youve found where the vacum leak is. Also you might have air in your coolant lines bleed your coolant. If you do have air in your line youll need to figure out how it got in there cause a blown head gasket could be a possibility. If you suspect a blown head gasket check your coolant if its milky (oil and coolant mix) then youve got a blown gasket. Honda idle problems are a bitch.
Robster
As for checking it itself just remove the screws holding the plate down and pop your finger over the hole. If you feel suction (once the engine is warmed up) than youve found your problem since the valve is not fully closing.
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