Temp issues with my D16Z6

D15, D16, D17 and Mini-Me swaps
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By -paul
- Thu Sep 30, 2010 3:14 pm #216034 I've drained all the coolant out, there were no oily smears or anything, so it seems I haven't harmed the head gasket.

I re-filled it with fresh coolant and bled it all. Left it idling and the fan kicked in when it should, which was good.

Haven't had the chance of driving it since then though, I need to engage VTEC a few times and then stop and see what happens.

If it still persists, I might change all the rad hoses and the rad and change the thermostat.

By Butterzz
- Thu Sep 30, 2010 4:07 pm #216047 I got my slim fan in today. I'm going to wire it up to run constantly and I'll let you know what happens.
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By -paul
- Thu Sep 30, 2010 5:47 pm #216059 Yeah would interested to find out how you get on. Only thing is, why are you going to wire it to run constantly?

By Butterzz
- Fri Oct 01, 2010 3:40 am #216147 Alright so I wired it up off of my O2 sensor plug because my O2 sensor is disabled, and my car is still heating. I think my headgasket is bad..
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By ghskid06
- Fri Oct 01, 2010 7:52 am #216200 Butterzz-

Im not sure what kinda of course youve taken to determine this. Running your fan constantly will help delay your overheating problem, but your old fan was running when you would get hot, so that means its probably going to happen (even if the fan has been on the whole time) eventually with a constant fan. When troubleshooting its always easiest to start cheap and easy and work up. If you think your gasket is bad do a compression test and check your water for oil and oil for water etc. But also make sure everything is flowing as it should. Luckily if it is your headgasket our cars are super easy to work on :lol:

Good luck with your car.



iChrist-let us know :)

By Butterzz
- Sat Oct 02, 2010 6:58 pm #216448 My civic is boosted so I didn't have any fan before because the way my setup is put together, it won't fit. Which is why I bought a slim fan.

I didn't take any course, and i've flushed the cooling system several times. You can smell coolant in my exhaust. It's the headgasket.
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By -paul
- Sat Oct 02, 2010 7:09 pm #216451 Sorry to hear that man, but like someone stated earlier, good thing they're easy to work on :). The only hard bit is to find somewhere to get your head skimmed.

As for my situation, I drained the coolant completely and re-filled it with fresh coolant as you know. I've engaged VTEC a few times the other day, also driven through town and done a bit of shopping today...I've had no problems.

Bizarre how changing the coolant would solve this issue though? This is why I remain skeptical. I'm not going to get my hopes up, I'm still going to keep my eye on it, so fingers crossed. :thumb:

Hopefully soon I'll change the rad and hoses too.
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By ghskid06
- Sat Oct 02, 2010 7:25 pm #216455 hope that solves it, its possible it was just your coolant. Lets hope so.

By Butterzz
- Sun Oct 03, 2010 2:47 pm #216594 It wouldn't make sense for it to be "just your coolant". If I'm not mistaken, the only difference between coolant and water is it's ability to freeze. I'm willing to bet you had a blockage somewhere and by flushing it out, you removed it. That, or it was airlocked.

Either way, I'm happy to hear you're not having problems :)

And getting my head planed is easy around here. We have like 4 machine shops that do anything and everything. You just need to pay for it :P
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By -paul
- Mon Oct 04, 2010 5:37 pm #216776
Butterzz wrote:It wouldn't make sense for it to be "just your coolant". If I'm not mistaken, the only difference between coolant and water is it's ability to freeze. I'm willing to bet you had a blockage somewhere and by flushing it out, you removed it. That, or it was airlocked.

Either way, I'm happy to hear you're not having problems :)

And getting my head planed is easy around here. We have like 4 machine shops that do anything and everything. You just need to pay for it :P


Yeah hopefully man, with any luck they may of been it... we shall see.

Ah well that's awesome then, no probs. :thumb:
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By Eg6H2D
- Mon Oct 04, 2010 8:24 pm #216794 have you ever even thought about your ECT ( engine coolant temp sensor) it works the the fan switch to coordinate when the fan should kick in.
Again not all the time you will get the check engine light for it.

It's right next to your Dizzy closest to the upper radiator hose. you cant miss it..
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By -paul
- Sat Oct 23, 2010 10:56 pm #219606
EG6b20R wrote:have you ever even thought about your ECT ( engine coolant temp sensor) it works the the fan switch to coordinate when the fan should kick in.
Again not all the time you will get the check engine light for it.

It's right next to your Dizzy closest to the upper radiator hose. you cant miss it..


I've come back to bump this thread as I've got the problem again after going for a blast, first time it's happened since I last posted.

Luckily I did otherwise I wouldn't of seen your reply. I shall try and change that and see what happens.
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By OleFolk
- Mon Oct 25, 2010 1:32 am #219812 I have had this same exact problem with my car
Accept I had a leak now I most defiantly have this problem with a new radiator

I asked my one friend whos a honda tech
and the first thing he said is
"You have air in your system. "

I haven't really heard any way to tell if your head gasket is blown besides checking to see if your coolant is cloudy which im pretty sure is co2 in your coolant.

What are other ways of telling if your head gasket is blown?
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By -paul
- Tue Oct 26, 2010 11:15 pm #220163 The engine is freshly built and have bled the system.

The only time I get this prob is engaging vtec aggressively consistently when giving it the beans through some lanes. And the reason why it escalates when I stop is because the fan doesn't come on. Not because of air or gasket - otherwise if the fan was kicking in and the temp was still rising, then I would bleed the sys etc.

Since I've emptied the coolant and refilled it with fresh coolant, it's been ok until recently. I've confirmed the fan works, also have changed the fan switch to a new one. Only thing left is the ECT. If I change that and it still doesn't work, I'll be changing all hoses and rad. If that fails too, I'll be setting my car on fire ;).
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By Eg6H2D
- Thu Oct 28, 2010 8:36 pm #220535 Any update?. still doing the same thing?.
if it still does it after you change your ECT. then it has to be the relay on the relay over buy the Power steering resevoir. ..
here is what teh relay loooks like..


http://www.amazon.com/90-97-HONDA-CIVIC ... B001KUN3RQ


and to buy go here..


http://www.rockauto.com/catalog/raframe ... 54-1628194
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