Recently my 2000 Civic (200,000 miles) has been running hot when the engine is idle. It runs at normal temps when moving AND also runs at normal temps while parked if I rev up the RPMs a little bit. Once hot, I can watch the temperature drop almost instantly when I rev up the engine a thousand RPMs or so.
I've also noticed a noise from the engine compartment lately, although I suspect it may not be related to the overheating. It sounds like rattling from a heatshield or bad bearings from something. It doesn't sound like it's coming from the water pump, although it's hard to tell.
Tuesday, April 24th, 2007 AT 8:33 AM