Car heats up after 30min long hwy drive, why?

Ok, so I have a car a 1999 Honda Civic DX Auto. It will run for days, weeks with no problem at all. Not a single overheat but when it's a cold morning. The gauge will not go anywhere near half way. It stays on C all through the cold day. Normal days its at half. After hitting the hwy at average 65mph for about 35min and letting off the gas. It will raise all the way to the H and start smoking. So i have to sit on the side for about 10min and put in more coolant. Its done that both times i did the long hwy drive.

1998 civic auto transmission problems 75k miles?

Bought it a year ago. About 2 months ago it started feel like a slight rumble when going about 35mph. Occur maybe once every two weeks. If I let off the gas for a second then continued driving it went away. Guessing this may be the torque converter

Now within the past couple weeks, sometimes when I first start it up and shift from "P" to "D4" the shift indicator light on the dash will disappear and when I try to accelerate it feels very glitchy, car doesn't want to move at first for a split second when i push the accelerator and then it'll start moving and then the light will illuminate on "D4" like its supposed to, then after a few seconds it'll act up again with the light flickering on when the car gets moving and off when the transmission isn't engaging. Then after driving for 15 seconds or so the transmission will stay in gear and the light stays illuminated. (the light isn't flashing as if showing a code, but just flickering on and off as the transmission catches and then slips)Seems to happen mostly when cold outside. Car is sluggish and is revving higher before shifting gears, this happens all during driving, whether cold or warm.

I did a 3 quart ATF change with honda fluid, but problems are still there. The check engine light isn't on. I've read of people who replaced their throttle postion sensor or shift solenoid and that cured their issues, could one of those be my problem even if check engine light isn't on? Any ideas what the issue could be?

I'm very interested in buying a Honda civic 2011 with 29k, for $11000, but it was in an accident?

The price is good, I trust the dealer, but he bought it from auction. A carfax report revealed that it was in an accident 2 years ago. No further details are available. I have a very trustworthy mechanic that will check out the car before I decide to buy it. The dealer is fine with me giving the car into my mechanic before I make any decisions. Should my mechanic feel that the car was well maintained and the body is fine and body work is fine. Should I purchase the car? It was not a total or a salvage and has a clean tittle.
I have bought a van in the past that carfax revealed the accident and have owned it for 7 years and is running great.

How much gas money should I ask for?

Two of my friends and I are going out on Friday but I need to drive 23 miles each way, so 46 total. How much gas money should I ask for each? They wanted me to drive bc I have a hybrid so it takes less gas. It's a honda civic to be exact.

2004 honda civic takes long time to start in cold weather?

So I'm a 17 year old boy and for my first car I got a 2004 Honda civic and its a really good car actually. But lately its been Really cold out. It sits outside at home and in the morning when I leave for school I can warm it up and all, but after I get out of school I come out and leave right away and sometimes it takes a little bit to turn over.

Whys is my car blowing out smoke?

I replaced the engine on the car about 5 month ago and recently is blowing out white smoke? It's a 1997 honda civic ex
It doesn't leak

Car stalls when clutch pushed in?

My car stalls once warm, I have a 2004 honda civic. It only stalls when I push in clutch & when I'm just sitting at a light in neutral with the clutch not pushed in at all, the low oil pressure light blinks. Go my Idle air control valve replaced. Still same problem. Could this be Because of the clutch?

Car has 130k miles