Car is overheating since it got tow, thermostad was change , it work fine for a day then it start again overheating. similar situation happen a year ago when my husband put a 87 gas, but then it fix itself after filled the tank with 93 gas, and a gas treatment. my husband just confess to fill the car with regular gas. could this be the reason the car is overheating?

indicates blown head gasket
do a compression test to confirm then replace head gaskets and have the head/s shaved as they will be warped

Check fuel pump relay behind the grove box. Had a similar issue and is an easy change. Brought mine new for ~$16.00 on ebay.

Hope this helps

Possible leaking head gasket, this will cause bubbles. Have pressure check done.

First place I would check are the battery terminals. Remove them and clean the posts, re-attach and tighten them. You can buy a tool for cleaning the posts at your local auto store.

I'm not sure of this, but my friend experienced similar situation.
He had a Kia Pride used for Taxi cab. He have replaced damaged parts, replaced freon for his aircon and overhauled the engine. The cab really runs smoothly and in good condition.
But from time to time, the engine stops. Just like you, everything is normal, but stops unexpectedly. We even have it checked from my friend mechanic and said that everything is normal. He gave up the car and he loosed around PhP50,000.00 at that time (enough to pay rent for a year. He later found out that the car runs OK again...
THE NEW OWNER HAVE THE WIRING AND ELECTRICAL CIRCUITS RENEWED!
And a car owner claims for the same problem, I said its ELECTRICAL CIRCUITS, it should be replaced. When she have it fixed, the mechanic have her car's wiring replaced. And it runs smoothly again.
Please try...

fuel filter ,vacuum lines, bad fuel pump ,Thermostat "

may be the alternator needs to be changed. when it goes then your car runs off the battery power. then the battery drains. will have enough juice to start again but it will happen again

IT'S NOT POSSIBLE FOR AN AIR BAG PROBLEM TO KEEP AN ENGINE FROM STARTING. IT QUITE POSSIBLE FOR YOU TO HAVE A SECURITY PROBLEM AS IT WILL SHUT DOWN THE FUEL PUMP. WATCH THE SECURITY LIGHT TO SEE IF IT STAYS ON SOLID OR FLASHES WHEN THIS HAPPENS AGAIN. DON'T GIVE UP YOUR 800 BUCKS UNLESS THEY CAN PROVE TO YOU THAT YOU DEFINITELY HAVE AN AIR BAG PROBLEM. YOU SHOULD HAVE A LIGHT ON FOR THAT ALSO.

You have a big problem! The head is shot! You will need to have it machined and checked for cracks. Overheating is a killer! Replace the cam belt at the same time. Frankster016

Did you ever sort this ? I've a similar overheating issue and just wondered ? Thanks ...