Civic EG

So yesterday i was driving home and just as i was getting home i noticed that the temperature was above average but i was so close to home it didnt matter. I get home check everything no coolant in the oil everything checked out good. Today on the way to work about a 20-25 minute drive same thing happen as i get close to work i seen it creeping up again but i countinued to drive and then it started to drop back down to normal temp. and stayed there. Any idea on why this would happen? Maybe the thermostat is sticking?

Sounds like the fan ain't turning on...

Go out for a 20 min drive, pull over leave it idling an check if the fan turns on, if it doesn't then that is your problem, You can also check the fan motor by bridging the two pin fan switch with the ignition 'ON' If it doesn't turn on that means your motor or switch is broken, if it does turn on then I'd say it be a problem in the wires.

Why it started to drop back, is that since you were moving your getting the air into your radiator an it starts too cool it down, that's why you will notice it starts to overheat in city driving, and it stays fine when your up at speeds.

Check out my thread i made - http://civic-eg.com/viewtopic.php?t=17531&highlight=

Good info si-b16 i will try that asap. Thanks

All good, Let me know how it goes

^^ That and check the temp sensor on the side of the cylinder head, under the distributor. it's the small one wire sensor. There is only one. You can take it out (CAUTION: Coolant will leak out.) plug it back into the harness, and lay it so it can ground out. If you turn the key to the ON position, and get it to spark, it's good. If not, it's a bad sensor. That sensor is what controls the needle in the cluster.

^^^^ exactally what I was gonna say...

Thanks si-b16 I just went for a little drive to test out what you suggested and you were right the fan is shot. No biggie though gives me a reason to buy and super duper JDM/OEM/USDM/EDM slim fan!!!

don't rule out what flyinryan122 said it could be that too

Haha good luck with that mate

But until then do not get stuck in a traffic jam, it will do lots of damage to ya engine...

{ikon}EM1 wrote:don't rule out what flyinryan122 said it could be that too

I dont think is the temp sensor cause it seem to run hot right before i get to work or right about 20-25 mins of driving and the fan wont power up.

si-b16 wrote:Haha good luck with that mate

But until then do not get stuck in a traffic jam, it will do lots of damage to ya engine...

If thats the case i will shut it off and push it the rest of the way lol. and mean dam its light enough for me too

flyinryan122 wrote:^^ That and check the temp sensor on the side of the cylinder head, under the distributor. it's the small one wire sensor. There is only one. You can take it out (CAUTION: Coolant will leak out.) plug it back into the harness, and lay it so it can ground out. If you turn the key to the ON position, and get it to spark, it's good. If not, it's a bad sensor. That sensor is what controls the needle in the cluster.

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