Leave your aircon switched on when doing extensive idling

[JohnBrowning]

My Father taught me that trick. He told me that if I ever had an over heating problem to turn my heat on full tilt and that it would buy me some time and might just get me home! It has helped a lot of my friends a time or too!

 

[Ken4]

quote:

---

Originally posted by car_junkie_moron:
I would like to know how do you keep it that clean?????

---

After nearly 4 years of filth, I decided to clean it up. Used a can of engine degreaser, a garden hose, and some elbow grease.

 

[VaderSS]

A lot of where a gauge reads is in the location of the sensor. Impala LT1s have their's located in a spot where the temp fluctuates wildly. The Vette has a combination sensor that puts the temp gauge sensor and PCM sensor in the same place. The Vettes gauge does not fluctuate nearly as much.

Also, most PCMs activate the fan just shy of the boiling point, when the A/C is off. When you turn the A/C on, it kicks at least one of the fans on, and keeps it on. The Impala PCM has a sensor in the high side of the A/C system and kicks one fan on at a certain pressure and the other one on a a higher pressure. That means that both fans turn off, if you are going fast enough, even when the A/C is on.

A trick I use, when in-between heats while racing, is to occasionally turn the air on until I hear the fan kick on, then turn it off, as there is a one minute delay before the fan kicks off. That way I am not adding heat upsteam of the radiator, but I've got the fan going. I also have the heat running full.

If you are in a true overheat condition, turning the A/C on is the WRONG thing to do, since it is heating the air upstream of the radiator. As is mentioned above, turning the heat on full, in effect adding another, small, radiator, is the better thing to do in that case, as the PCM will already have both fans on.

 

[car_junkie_moron]

quote:

---

Originally posted by Ken4:
Ever since installing a water temp gauge in my 4cyl camry, I discovered some interesting things.

http://web.singnet.com.sg/~kppjw/Oil_Gauges7.jpg

http://web.singnet.com.sg/~kppjw/Water_Temp_Sender.jpg

Water temps in general rise when idling (95C), when cruising (85C), when driving hard & fast (80C).

The stock OEM water gauge is kindof useless, the needle rises to the center of the gauge and just stays constant. For the last 4 years I had thought that water temp was always constant in my vehicle, but boy was I wrong.

The interesting thing is that with the aircon ON, the water temps never get past 95C when doing extensive idling. But when I switch OFF my aircon, the water temp soars to 102.5C when idling. The camry has two electric fans sitting behind the radiator, my guess is that with the aircon on, the fans kick in earlier. Or the aircon condensor coil mounted in front of the water radiator provides some cooling when the aircon is running.

---

not a right post to ask such a question but since you have your pics here, this car seems 1997 to 2001 family camry, dang the engine is way too clean how do you keep it clean like that? Mine needs to be cleaned and still thinking for a good procedure i should follow. I would like to know how do you keep it that clean?????

[ December 02, 2003, 01:29 PM: Message edited by: car_junkie_moron ]