Question about 1996 Isuzu Rodeo
Your thermostat is probably stuck shut. When the car is cold, open the radiator cap and fill the radiator to where you can see the coolant. Start the car and have a friend watch the gauge rise as you watch the coolant. At a little before or right at half way the thermostat should open and you should see the coolant drop. At this point the car should also have heat. If you can not see the coolant drop it can be one of 3 things.
Thermostat stuck shut water pump is bad blockage in radiator or cooling system.
Heres what I would do to rule out water pump 1st. Disconnect the line that goes from the water pump to the engine from either side, the pump or engine. back away and start the car. You should see coolant coming out of the water pump. if you dont try to put water into the hose to make sure the water pump has water in it. It could be empty if the pump is after the thermostat and it is stuck shut. If the water pump has water in it and nothing comes spraying out when you start the car, the pump is bad. If it does come out you need to remove the thermostat and push against the wafer in it on the opposite side of the spring and see if it moves. If it does not moves (wont be easy) the thermostat needs to be replaced.
Posted on Aug 25, 2010
Testimonial: "I thought it might be the Thermostat I just had the water pumped repleace not even six months ago..thank you sir for your expertise"
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Posted on Jan 02, 2017
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