mipinc wrote:I tired the a new radiator cap but no luck. When I push the gas, the fan speed goes up and the temperature go back to normal. I tried this by pulling the cable in the TB. Only if the temperature stay below 80 f, I wouldn't havee to worry about this issue
myother45isalesbaer wrote:Did you get this resolved. I am very interested in what the problem was.
mipinc wrote:In the last few days the temperature has not gone up to middel 80s where I see this problem. So far the temperature is staying in not namal range. I would agree on Nissan not displaying the correct information. My fuel level is messed-up like every one else but after couple of samll taps i goes back to normal level. The issue I see with the temperature is that it goes up and down much faster than the fule gauge so I am sure there is something gogin on radiator, fan, or something in the cooling system that brignthe temperatur down when the rpm is above 2000.
mipinc wrote:I have washed the radiator with no pressure and noticed black dirt lines in the water trail. Not sure if it was from radiator or engine cover. I will drive it tomorrow in the day to see if this also fix my problem. How did you wash the fan side of the radiator?
I’ve been trying to figure this out for awhile now. I’ll try washing down the radiator and condenser today. I hope it works for me.OPM45Owner wrote: ↑Wed Jun 23, 2010 2:12 pmHad the same problem of overheating, would return to normal once RPM went above 2000. Fushed radiator, still overheated. Changed Thermostat, still overheated. Spoke with two dealers who both said to clean the radiator and condencor that even a small amount of dirt could cause reduced airflow/overheating. Hosed down radiator and wiped down condensor. Car has not overheated since, have been running a week in 90 degrees and slow stop and go traffic. Mechanic still can't believe that that was the problem but it worked.
Please can you explain how you did the conversion of your hydraulic fan to the electric one here? Do you have pictures of some details to share? I have the same model of M45 2003 too.Reds12t wrote: ↑Thu May 27, 2010 5:02 pmIt is a strange set up for sure. These cars have a hydraulic pump that is built into the water pump, it drives a hydraulic motor that is attached to the fan shroud. There is also a small radiator mounted in front of the A/C condenser, you can see it through the grill. The hydraulic fluid reservoir is mounted on the drivers side cylinder head. If you take off the engine cover, you will see it, it is just the standard Nissan power steering reservoir.myother45isalesbaer wrote:Question....what is a hydraulic fan. I thought these were electric. Is it power by hydraulic pumps? I never heard of such a thing. Please explain. Are you just taking about a hydraulic clutch that kicks in as the heat goes up. This old dog needs and education on this one.
It is the brown reservoir in the bottom left of the picture. I ditched that whole set up for an electric fan, much simpler!