Temp Fluxuation

[Mr. Pockets]

Originally posted by civic_slayer
Could it be evaporation caused by the temp and my driving habits?

Keith

What, exactly, do you mean by 'driving habits?'

[cbx-man]

Originally posted by halistan
Mine would do that as well. It started just like yours then evolved to getting hot anytime the car sat still for a few minutes, but would cool off after i got under way. I too asked the yahoo club and they said thermostat so i replaced that and did a flush too but it didn't help. Turned out that my water pump was going bad. Have you ever replaced the water pump? How many miles do you have on it?

~Ray

I will agree with this diagnosis ( I had the same problem). When the water pump starts to fail ( it starts to leak imperceptably out it's weep hole) it replaces the coolant with...AIR. Since the weep hole is higher than the t-stat the air bubbles rise (usually when it's not running) into the engine rather than the radiator and creates a hot spot and the temp spike. One quick *remedy* when it spikes is to turn your heater up to its hottest and might be able to blow that air through the system and into the radiator. Then refill the rad when it cools.

Good luck!

When you've had the disease, you recognize the symptoms