Well I Changed the thermostat,the radiator twice. and I am still getting coolant loss at the bottom of the radiator. Hoses are new. The car only has 89,000 miles on it. A 2000 Honda Accord V-6 3.0 VTEC. What am I doing wrong??? I did bleed the system by running the car for 2 fan cycles and burped it a few times. The temp gauge does not go up too hot. The fans cycle at the same time if I rev it too 1500 rpm's after running it for a while. But only stay on for a few seconds and then shut off. When should they kick on? Good it be a bad coolant temp sensor? I am lost. Thanks for any help. Honda ride531.

 

Ok..So I thought. 2nd Radiator in and new thermostat. And the new ready rad brand radiator.. seems to be tripping a bit again. Am I not Bleeding the system right>? Or it it a bad temp. sensor.It seems after it gets up to operating temp both fans kick on at the same time then go off quick. No water in the oil and the car runs great. lOST...Send help please Mother Ship.

 

2000 Honda Accord EX 3.0 Vtec automatic trans. 89,000 miles. What shold I look for. I hate things Leaking. Thanks Again.

 

Have you used a pressure tester?

 

You really need to find out where the leak is at.

What brand and model # of radiator did you install?

 

I Installed a Ready Rad brand twice. It seams to be leaking right at the bottom of the radiator. Where the aluminum meets the plastic. I mean could I have gotten 2 bad radiators? Thanks again

 

The part number of the radiator is 431-457 Ready Rad is the brand.

 

If you can actually see it leaking down there where the plastic radiator tank meets the aluminum radiator core, then YES I guess you got 2 bad radiators.

But check to be sure it isn't leaking from where the lower hose clamps onto the radiator.

 

Is it possible wen I installed these 2 new radiators that I did not bleed the system right and it caused too much pressure and blew out the gaskets on the radiator. The 2nd new radiator is in and leaks very little. Seams mainly when it is cold and sat over night. After the first ride it seams to stop leaking. I am confused..Thanks again for all your help.

 

If the radiator cap is working properly, that will not allow pressure to build up. Got a new cap along with the new radiators?

Inside the cap there's a couple spring-loaded disks. Those have to work properly, not stuck & corroded into a solid lump, etc... Normally you'll at least give that stuff a glance to see if it's visually OK.

Also, if the pressure WAS too high, I'd expect a couple weak hoses somewhere (on a 12-year-old car) to start leaking before a new radiator.