My 93 164 has been mostly flawless. It has 126,000 miles on the clock and has needed a tranny (auto) rebuild at 85,000 miles and steering rack redo. Last year I did the steppers and this year I'm afraid it's the heater core. Here's the story, left to idle in the driveway with the A/C on. Did some stuff in the house, went out no more that 10 minutes later and saw a horrific site. Coolant gushing out of the bottom of the engine bay, the temp way high, immediately jumped in and turned off the engine, and the smoke came gushing out of everywhere, the vents, the engine bay, the driver's and passengers' foot wells. Very disheartening. I was leaving for the weekend and could only push the car into the garage. Just got back from vacation and will have to work tomorrow, but I'm hoping to get under the car tomorrow to see what's what. A few theories, the fuse for the fans went and the car overheated popping a hose. This is a good explanation because it eliminates the heater core as the problem(?). Any other explanations? I know of the fuses by the driver's side foot well. Is the fuse for the fans located here? Are they in the engine bay? Thanks for any input.