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caddycav
Starting in the driveway
2 Posts
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 Posted - 28 Jan 2010 : 11:34:01 PM
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Ive got a commodore 1991 vn v6, its overheating but only seems to be when the aircon is switched on?
The fan is working fine and kicks in at half way, also we flushed out the radiator today and checked for air locks and bled the system but all that is fine now (the radiator looks new).
The thermostat is opening and working fine too.
Thinking of bypassing the temp sensor and keeping the fan runnin all the time (anyone know where the sensor is?)
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VNSVLE
Forum Moderator
1316 Posts
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Posted - 29 Jan 2010 : 12:37:09 AM
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Welcome to the family mate!!
What does the temp sit on usually without the A/C on??
Is it in traffic when it heats up or open road or both??
Where is the guage sitting when it is overheating?? |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
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caddycav
Starting in the driveway
2 Posts
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Posted - 29 Jan 2010 : 2:16:14 PM
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| the gauge sits at about one bar above half way when im driving on the freeway n then when i leave it runnin at home it drops to about half way. I just checked the thermostat and that wasnt opening at all which wont of been helping (they said theyd put a new one in at the garage?) so i left that out and ran it and it was running cooler but still up at above half way. Where abouts should the gauge be at? |
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Mechknight73
National Driver
1001 Posts
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Posted - 29 Jan 2010 : 9:59:32 PM
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My '89 VN runs at or just below the second bar on the highway, and about 3 bars around town. Haven't had the aircon running for quite a while, but do notice a slight difference in temp when the aircon is on. Remember, the car has to work a little harder to run it, both because it drives the compressor, and how often it kicks in and out on a hot day.
The "shorthand" way of temporarily fixing your thermostat, is to take it out, cut out the coil and plunger assembly from the middle, and put the outer ring back in. This will mean the thermostat won't restrict water flow at all, as if it were permanently open.
It also depends on your definition of "flush" Sticking a hose in and running the hose until the water coming out is clear isn't the proper way to do it. You usually need to run a chemical flush, and possibly even take off the tanks and rod out the cores on the radiator. I would also take out the radiator, and look at the fins on the front, between the radiator cores. There's some chance the fins may be rotten. Their sole purpose is to draw heat away from the cores, by sucking it out with airflow. If they're not there, the radiator isn't very efficient |
Edited by - Mechknight73 on 29 Jan 2010 10:01:16 PM |
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