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Leaks, et al Posted by Ari [Email] ![]() ![]() In Reply to: Leaking coolant/overheating (longish), Jan, Wed, 15 Aug 2001 12:38:45 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Is this a 900 or a 9000? I'm pretty sure only the 9000 comes as an Aero.
Coolant on the floor is a sign of a leaky heater valve in a 900. It could be a leaky heater core, but chances are good it's the valve. Now, if the shop replaced the valve and things are still leaking, I'm going to assume that they did a piss-poor job.
The 9000 doesn't have a heater valve - the heater core gets coolant all the time, and heat is controlled by mixing cool and hot air with a flap.
Now, the 900 heater valve is interesting, in that when it's closed it shunts coolant back to the engine. It doesn't just stop the flow. If the valve was installed wrong, or the valve is bad, it may not be shunting fluid back to the engine. With the flow wrong, this can't help your cooling issues.
The others are quite right - if your system isn't pressurizing correctly, the engine will run hotter. I'm also going to take a stab and assume it hasn't been bled properly, or if it has, it's got air in the system again from your leaks. Air does a poor job of cooling.
Fix the leak. Make sure you get heat when you want, and don't when you don't. Have the system bled (900 only - the 9000 system self-bleeds). Have you been running the AC? Make sure a fan comes on whenever the AC clutch pulls in. Turn the AC off, and be sure that the fan comes on when the temperature gauge creeps up - you don't want to confuse the AC turning the fans on with the thermoswitch turning the fans on.
With a decent baseline system (i.e. no puddles on the floor), if you're still overheating, then real troubleshooting can begin.
posted by 140.157....
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