Tip & How-To about Dodge Ram 1500

Cheap coolant overflow cap

Contaminated coolant contributes to engine damage by clogging up the radiator, reducing efficiency of the coolant to remove engine heat. an uncapped overflow tank is a route for debris and contaminents to enter your cooling system and if ignored, circulate crud thoughout the system and clog your radiator. So if you have lost your coolant cap,(which is easy to do) dont just say "oh, well" there is a temporary fix that will keep your coolant clean until you can get to an auto parts store and replace your cap with the proper cap. all you will need is a plastic bottle, or container cap and some electric tape, or, yes, even duct tape. eyeball the approximate inside diameter of the radiator overflow tank fill hole. place the bottle cap over the fill hole, but dont let go of the cap. if the cap is smaller than the hole wrap electrical, or duct tape around the cap a few times and replace bottle cap over the fill hole. the cap should fit snug in the fill hole. make sure you dont press cap into the fill hole too deep that you cant pull it out with your fingers. if you do you can pull it out with needle nose pliers. this will keep your coolant clean until you can get to an auto parts store and replace the cap with a proper cap.

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2 Answers

Car overheating causing fluid to come out of the reservoir

Change your thermostat. Ensure that your radiator fan is running at idle. See if your heat blows warm or not when the engine is warmed. if the heat is clod, then you have no water circulation in your engine. either the thermostat isnt opening up, or there is a blockage in your cooling system.

Jan 11, 2017 | Cars & Trucks

1 Answer


can be a multi reasons so well go thru them-- low coolant level---radiator--leak,clogged,blocked---radiator fan--not working--hoses--leaking,collapsed--water pump--worn,damaged,clogged,belt slip ---thermostat--stuck shut,stuck open,clogged---engine damaged-head gasket -leaking --head ,warped,cracked--cylinder wall damaged---oil --no pressure,pump damaged these are causes of overheating

Jul 16, 2015 | Cars & Trucks

1 Answer

Heating system clogged up. Requires new radiator.

The radiator is in front of the vehicle. The dash doesn't have to be removed, unless you are confused and mean the heater core is clogged.

Jan 30, 2015 | 1998 Hyundai Atos

1 Answer

where is the thermostat located


Your engine must be cold before removing the thermostat.

Find the location of your thermostat by following the rubber hose located on bottom of your radiator (passenger side) to the point where it attaches to the engine. Remove the two bolts at that location and you'll find your thermostat nestled in there.

Be sure to place a pail under the car to contain the coolant.

Thermostat Operation:

00047_thermostat.jpgThe automotive thermostat is a temperature controlled on and off valve. When the temperature rises to a predetermined temperature, the thermostat opens up to allow the engine coolant to flow through the cylinder block and the radiator. This flow is crucial to maintain optimum operating temperature for fuel efficiency, enhanced driveability, and engine protection. The coolant flow is reduced when the engine is cold, and the flow is increased when the engine is hot. Contrary to popular opinion, operating the vehicle without the thermostat doesn't make the engine run cooler. It will actually run hotter because there isn't a thermostat to slow the coolant flow. This means the coolant doesn't stay in the radiator long enough to dissipate its heat.

All the best


May 24, 2011 | 1993 Cadillac DeVille

3 Answers

took out the thermostat, replaced the radiator, the water is circulating in the radiator but it is still running hot. what do i do next?

Overheating can seriously damage a car's engine if left unchecked. Although overheating simply means that a car's engine temperature exceeds normal operating temperatures, the causes of overheating are varied. What follows is a brief list of some of the most common causes of engine overheating.

    Faulty Radiator
  1. A car that overheats will often have a faulty radiator. A radiator is responsible for cooling hot engine coolant that picks up heat from inside a car's running engine. A radiator "radiates" the heat from engine coolant out into the outside air. A faulty radiator loses its "radiating" effects and allows engine coolant to become overheated, thus rendering it ineffective at adequately cooling and engine.
  2. Faulty Water Pump
  3. A faulty or malfunctioning water pump prevents adequate engine coolant flow and can cause a car to overheat. A water pump serves to pressurize and propel engine coolant throughout a car's engine and radiator to increase the heat-reducing capabilities of engine coolant. A faulty water pump loses its ability to adequately pump and propel engine coolant, and can cause a car to overheat.
  4. Coolant System Leaks
  5. A leaky engine coolant system reduces the level of circulating engine coolant, which increases engine temperature and leads to engine overheating. Radiators, water pumps, and coolant system hoses and seals--all of these coolant system parts can develop leaks, which can result in low coolant levels and engine overheating.
  6. Faulty Thermostat
  7. A car thermostat regulates the flow of engine coolant. A thermostat is a heat-sensitive valve that opens when a car engine reaches a set operating temperature and closes when a car engine is cold and warming up. If a thermostat gets stuck in the closed position, coolant will be prevented from reaching the engine, which will quickly lead to engine overheating and potential engine damage.
  8. Low Engine Oil Level
  9. Engine oil, in addition to lubricating an engine's internal parts, helps to keep engine operating temperatures reduced by eliminating friction within the engine. If engine oil levels are low, friction and heat build up inside an engine, a condition that causes increased engine operating temperatures and can lead to engine overheating.

Jan 15, 2011 | 1998 Isuzu Rodeo

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