I have a 1994 Chevy Suburban (5.7L V8) that’s occasionally overheating and I’m at a loss as to what the problem could be.
Now, before anyone tries to talk some sense into me with words like “sell,” “scrap,” and “take that pile of you-know-what to the junkyard,” I should point out that my parents bought this car new when I was 2 and it became my first car almost 10 years ago. I love this car. (But, just so you know I’m not completely impractical, I do have a 2014 Camry as my daily driver now.)
I’m handy but not an expert when it comes to car maintenance: I had no problem replacing my drum brakes using a Haynes manual, but diagnosing engine problems still scares me. So I’ve been bringing it to the repair shop when it overheats. The first time, it turned out to be a stuck thermostat. They replaced that and I was good to go for a few months, until it happened again. That time, it turned out the water pump gave up. One new water pump later, and I was back on the road. That was about a year and a half ago now (and when I bought the Camry).
It still overheats every so often. It’s hard to say exactly how often, since I only get a chance to drive it occasionally with my current job/living arrangement, but let’s say it goes a few months in between it happening. When it does, it’ll just be randomly in the middle of a drive, and if I’m lucky, the warning light will come on before the hose pops off the radiator and coolant spews everywhere. But here’s the weird part. Assuming the hoses did stay on, if I give it a little while to cool off, I can start driving again like nothing’s wrong. And the repair shop can never figure out what the problem is any more (I even let them drive it for 3 weeks once and took it to another place for a second opinion).
Any ideas what could be going on or what I could do about it?