Honda Car Forum

Honda Passport SUV overheating....I replaced the thermostat, still have excessive presure in the top hose. It tends to be more lickly to overheat at an idle as oposed to on the freeway, also it idles a little fast when it is overheating. any Ideas??

Is the fan working properly? Sounds like fan trouble if it doesn't overheat while traveling down the highway.

Yea it does sound like your fans arent working properly. At idle speed or city driving the fans should be on to cool your engine down. At highway speeds there are no use for fans since the speed that you are driving at is sufficient enough to cool the engine. Also when the thermostat was replaced did you make a small hole at the top of it? I know most part stores dont sell them with the hole already there. This allows air in the system to escape, preventing air pockets in the coolant.

Instead of trying to diagnose the problem yourself, wouldn't it be better to have a trained Honda technician do it? Get to know the your local Honda dealership - build a repoire with them by having your vehicle's maintenance and service done there regularly. If you do that the technicians would probably pick up on any problems before you do because they work on it.If you think that having your vehicle serviced at a Honda dealership's service centre is expensive, imagine the money you could save because they'll find a problem while it's still a small -saving you the money it would cost when it becomes a big problem.

either the fans, or more likely the engine coolant isnt full, you may have a radiator leak which is where the coolant would be going instead of going to the engine, so i would definitly check the coolant, and then check the radiator for leaks/anything else that looks odd.

Call all your friends. Ask who they trust to fix their cars. You can let the dealership fix your car, and they will probably do it just fine...but you pay through the nose for the privilege.Then, call the guy/gal that the majority of your friends recommend and let that person repair your Passport. Would you let your plumber fix your roof? No? Then don't be fooling around trying to fix your car.Thanks.

Best way to know is, Open the hood, Let your car idle, When you see the temperature gauge going past the half way mark, and starting to overheat,Look at the radiator fans, If the car is starting to overheat and the radiator fan does not turn on, you have an issue with the radiator fan system. If the fan comes on, use your hand, carefully grab the upper radiator hose and feel its temperature through you hand. It should be really hot. Now grab the lower hose, the temperature should be the same. If one is a lot cooler than the other, you may have a faulty thermostat.