Originally Posted by
civicsidude
Yes, I have tried the stock shroud and new clutch fan after replacing the thermostat and waterpump, the temps were within 5 degrees of the electric
the electrics are wired to relays and turn on at 160,, I had one of them set to turn on when the a/c goes on like factory but that did not help at the time either.
the thermostats are all nismo one with drilled top hole and one without. My first thermostat is a stock oem
My drive to work in the morning is 1hr each way and its all highway driving and does not go above 205 at the top hose without a/c.
City driving is 160 without a/c
The only idea i have left is to completly cut up the front bumper for some more air flow or get a aftermarket bumper with a bigger hole.
hhmm... odd...
good for you that you've already tried all of those things.
sucks that it didn't fix the problem.
as I understand it along with my experiences, cruising on the highway, you should have enough natural air flow to maintain the temps. Since you are getting hot when you are going slower, I really don't think it is an airflow problem. I would lean more towards a coolant flow problem. I'm assuming that through all of this you've probably burped the system 3.5 dozen times. So I doubt it is an air bubble that is steaming up, and locking up the coolant flow. You said you have a new water pump so it should be moving enough coolant.
have you tried a new radiator cap?
If the system isn't pressurizing properly, then the coolant won't circulate correctly, so at the higher RPMs the water pump will just spin the same little bit of coolant around and around. Then once the rpm's are lower, the coolant can make its way around the whole system.
Since it cools off when you slow down, I doubt it is a clogged radiator. Typically when that happens it will just eventually get hot, then stay hot until you shut it off and let it sit and cool.