I have a 2000 Plymouth Neon and today it broke down on the highway. The first thing I noticed (its cold out so I had the heat on low) was that my heat gauge was running high. (note that I just had the radiator and a rad hose and thermostat replaced just a few months ago), so to get it home I turned the heat on high and it dropped back where it was supposed to be nearly instantly. Then after a minute of turning the heat on high it started to make some strange noises so I turned off the heat and the radio to listen to the noise and it had gone away.
So, I turned the heat back on but on low and suddenly there was a loud thudding noise, all of the gauges started going haywire and it died. Not only that just a week ago the power steering ac belt tensioner had gone out and I had noticed some new squeaking in the serpentine belt just within the past few days. I didn't get a chance to look under the hood as it was dark and cold so I was more worried about getting home. Anyways, I also noticed a few days ago that there was oil in my coolant reservoir and I've been going through an awful lot of oil and I had been told by my regular mechanic that I am leaking oil but he couldn't find a source.
I know this car is pretty much worthless because it needs other work done as well (new crank shaft sensor, leaky transmission, strut mounts, ect.) but I just want some sort of answer to what could be going on. I'm rather broke at the moment so I can't really afford to take it to a mechanic but I'm just curious as to what could be the problem. (other than the cars junk and I got ripped off when I bought just this past February.)
thank you to anyone who can give me some insight of what could be going on. sarah