98 Civic DX overheating
#1
98 Civic DX overheating
I DID do a search before posting this. However, if there's a post I missed with an easy fix or suggestion, by all means please link it. I promise not to be offended.
Car is a 98 Honda Civic DX 4-door manual transmission. 202,000 miles. Never given me a problem except usual wear and tear.
Recently I put an Injen cold-air intake on it just for the heck of it. I know it won't boost my measly 106 horsepower, but I was hoping to maybe squeeze a couple more MPGs out of it. Anyway, I like the sound better.
It didn't give me any problems during the first drive, but today it started overheating on the way home from work. I popped the hood and saw what looks like antifreeze/coolant spattered on the air intake where it attaches to the throttle body. It seemed to be leaking from the hose that goes from the heater breather to what Majestic Honda calls the Rotary Air Control Valve Inlet, and it seems to be leaking antifreeze/coolant (it's bright neon green). I checked the coolant reservoir and it was empty, and then I checked the radiator and it was also empty (there was no coolant at the filler neck as described in the manual). So I bought coolant and filled the reservoir and the radiator and continued home. But it still overheats. Any suggestions?
The Rotary Air Control Valve Inlet is item #5 in this picture, and that's where it seems to be leaking:
RACV
Car is a 98 Honda Civic DX 4-door manual transmission. 202,000 miles. Never given me a problem except usual wear and tear.
Recently I put an Injen cold-air intake on it just for the heck of it. I know it won't boost my measly 106 horsepower, but I was hoping to maybe squeeze a couple more MPGs out of it. Anyway, I like the sound better.
It didn't give me any problems during the first drive, but today it started overheating on the way home from work. I popped the hood and saw what looks like antifreeze/coolant spattered on the air intake where it attaches to the throttle body. It seemed to be leaking from the hose that goes from the heater breather to what Majestic Honda calls the Rotary Air Control Valve Inlet, and it seems to be leaking antifreeze/coolant (it's bright neon green). I checked the coolant reservoir and it was empty, and then I checked the radiator and it was also empty (there was no coolant at the filler neck as described in the manual). So I bought coolant and filled the reservoir and the radiator and continued home. But it still overheats. Any suggestions?
The Rotary Air Control Valve Inlet is item #5 in this picture, and that's where it seems to be leaking:
RACV
#2
Honda-Tech Member
Re: 98 Civic DX overheating
replace the hose no wonder you'r over heating you'r coolant is leaking how do you think the engine keeps "cool" hope you didn't run it for long whilst it was overheating.
#3
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#4
Re: 98 Civic DX overheating
Sorry, should've mentioned in the first post that the hose is brand new (the replacement that came with the intake kit). I do know what coolant does, and that leaking coolant = overheating engine. I tried re-seating the hose and the clip that holds it in place, that was my first fix before I checked the reservoir and the radiator. The hose doesn't seem to be split or have any holes in it or anything, and the connections are snug, and it's definitely still leaking somewhere because there's a small amount of coolant under my car this morning.
#5
I like the tuna here
Re: 98 Civic DX overheating
You need to get a towel or rag and dry off the entire area, then start the car and while its idling, watch the area and see EXACTLY where it's leaking from. Could be a gasket or something, it might not be that hose.
#6
Re: 98 Civic DX overheating
That part is called "IACV". Idle Air Control Valve. Check the Gasket on the IACV and Ryd2TheMax is correct check. Dry-it-Out first the. Check-it. Also as-far-as Your Coolant Reservoir it's not suppose to be full anyways it should have some kind of Coolant in there but not full because if You're engine is about to overheat all the fluids (Coolant) in Your Engine/Radiator will all go to the reservoir. Hope this helps You out a bit. GoodLuck!
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