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I have a 2000 Pontiac and my was doing the same thing. It turned out to be my heads were warped. You can smell it coming out of your tail pipe if it is your heads.

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Q: Why would a 1998 Pontiac Transport Montana over heat when stopped after the thermostat coolant sensor water pump radiator intake manifold gasket radiator cap and all of the lines have been changed?
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Related questions

Is a 195 degree thermostat on a 1998 Montana transport van?

Probably.


Is the thermostat housing where the upper hose meets block because it looks impossible to change without removing the throttle body and exhaust manifold on a 2004 Pontiac Montana?

The thermostat housing is dome shaped at the end of the radiator top hose on the block, and should be near the water pump which is on the front of the engine. Not looked at a Montana lay out so can't help further.. :)


Why would a 1998 Pontiac Transport Montana over heat after the thermostat and coolant sensor has been changed?

You more than likely have a bad water pump. With the car running, open your radiator cap and see if the water is circulating through the radiator. If not, then your water pump is bad. Hope that helps...


Where is the Location of temp sensor for 2001 Pontiac Montana?

The coolant temp sensor is located on the manifold, just to the left of the thermostat housing on the right side of the engine compartment. They are both located just under the air intake tube that attaches to the throttle body, and it has a small 2 wire connector attached to it. You can follow the upper radiator hose from the radiator to the thermostat housing to locate them. Good luck.


2003 Pontiac Montana thermostat removal?

Should be located at the engine end of the upper radiator hose in removable housing


How do you replace the thermostat located on a 2001 Pontiac Montana?

Begin by draining the coolant. Next, you have to remove the exhaust crossover pipe that runs around the rear of the engine, just over the transmission. This will require tilting the engine forward so you can reach the bolts on the rear manifold. Remove the upper radiator hose from the thermostat housing and then remove the bolts. The thermostat is in the recess in the intake manifold. Reverse the process to re-assemble. This little job took me about 4 hours to do. Good Luck and God Bless.


Why would a 2002 Pontiac Montana overheat while your idleing?

Low coolant Water pump not working properly Cooling fan not working Thermostat not opening fully Radiator plugged or dirty Check the radiator fan.


How do you change a radiator on a 2001 Pontiac Montana?

Before changing the radiator on a 2001 Pontiac Montana the coolant must first be drained. After the drain remove the radiator mounts, fans, and hoses. Pull the radiator upwards.


Why would a 2000 Pontiac Montana idle at a high temperature but go down while driving?

Check the coolant level. Not just the bottle but in the radiator too. The 3400 motor is known for leaking coolant at the intake manifold.


2001 Pontiac Montana Radiator?

yes it has one


Where is the thermostat located on the Montana?

On a 3.4L engine there is a metal adapter bolted to the engine that the upper radiator hose attaches to. It is on the right side and is a nightmare to get to. Many parts must be removed to get the adapter off. The thermostst is inside the adapter.


Can you replace radiator drain plug on Pontiac Montana Minivan?

If it is a plastic radiator and it is stripped, no, if it is metal yes.