Q: Running really rough, not starting usually. Battery light came on. Car overheated. Headlights turn off when I put the high beams on.

asked by on

My car hasn't been starting, I thought it was because of the cold. And then I added gas Heet, antifreeze for the gas, 3 bottles, and car started running really rough. Then this morning not start. Finally got it to start this afternoon but was running really rough. Tonight it didn't want to start again but finally got it going. Then the battery light came on while driving and the car temp went all the way up as high as it could go but the heat was blowing out ice cold. I drove home like that. Also the lights turned completely off when I tried turning on the high beams. As long as I didn't turn on the high beams the lights stayed on. What do you thing is wrong??

My car has 210000 miles.
My car has an automatic transmission.

Hi there. With the information given, it sounds like you accidentally put 3 bottles of Gas Heet (water / antifreeze remover) into the gas tank. There is to be only 1 bottle of Gas Heet to a full fuel tank of fuel. The Gas Heet is heavier than fuel so it will mix with the water and go to the bottom of the fuel tank and block the fuel from entering the engine. When Gas Heet is in the fuel system, as the engine is started, the additives, methanol, water, and gasoline are consumed and burned. All of these combined will make the engine run very hot and unstable. Too much Gas Heet will make the engine run hotter than normal conditions and cause the engine to overheat. I suggest flushing out the fuel system and fuel tank. If you need further assistance with your engine overheating after putting in Gas Heet, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Running really rough, not starting usually. Battery light came on. Car overheated. Headlights turn off when I put the high beams on.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: overheating quickly, busted hose from coolant tank and will not hold antifreeze.

Hi. The usual cause of a hose to split like that is the hose being old and the rubber of the hose not holding the pressure of the coolant system causing it to split or buster. This hose is either...

Q: Headlights don't work on low beam

Hello. Other than what you've already checked on your 2002 Dodge Ram 1500, there are only a few things that could cause the issue you're having. A faulty multifunction switch in the steering column, a faulty body control module under...

Q: My SRS light is on on my dashboard how much is it going to cost to fix this problem?

There are two components to the repair cost: 1) the cost to diagnose the issue(s); and 2) the actual repair cost once the fault(s) is pinpointed. The former cost is fixed and you can obtain it by referring to YourMechanic's...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.