answersLogoWhite

0


Best Answer

Hey Leonard, Either it is low on coolant or the sensor needs to be cleaned. GoodluckJoe Also it could be a leaking intake gasket. To check for this look at your oil cap and see if it is white and also checkjust below the valve covers to see if there is any coolent and or oil on the sides of the engine the light will come on when, rad. fluid is low due to a leak, )many causes.) due to a bad hose ,loose clamp,a leaking water pump, or you are loosing fluid into your engine. check you oil and look for rad coolant fluid in it. you may have a blown head gasket. i just went through the same thing with the only exception being when i did notice the temp gauge went up past the normal running range i immediatly pulled over waited for the motor to cool down. When the teardown was completed we found not only was the intake leaking but i had a blown head gasket as well, best of luck to you. With the closed pressurized systems, the coolant can boil off if the gasket on the radiator cap gets old and hard. Replacing the cap is inexpensive. If it doesn't solve the problem then further investigation is needed.

User Avatar

Wiki User

โˆ™ 2008-09-04 14:52:38
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides

๐Ÿ““
Create a Study Guide

Add your answer:

Earn +20 pts
Q: Why would the check coolant light come on in a 1999 Pontiac Montana?
Write your answer...
Submit
Related questions

Why does the low coolant light flash on 2002 Pontiac Montana?

The coolant level sensor in the coolant reservoir detects the coolant level is low. The coolant system must have a leak in it somewhere. Have a trusted mechanic diagnose it soon before you do damage to the engine.


Check engine coolant light stays on until engine heats up on 2002 Pontiac grand prix 3.8 liter engine?

Check the engine coolant... Is it full? yes coolant level is full


What causes the hot coolant temp light to come on the 2002 Pontiac Montana?

You are OVERHEATING. You most likely have an intake or Head gasket problem.


Pontiac G6 has check engine light with a wrench?

pontiac g6 check engine light car with wrench


Why is the low coolant light on in the 1997 Pontiac Transport?

1) You actually have a low coolant level. Top off your radiator, bleed out the air in the system, and check the LOW COOLANT light again. 2) The coolant level sensor, located on the coolant recovery tank, has gone bad or became disconnected. Check to see if it is connected. If it is disconnected, plug it in and check for the LOW COOLANT light. If it IS connected, disconnect it and verify that the LOW COOLANT light is still on. While you're in there, check the underside of the oil and radiator caps for sludging or a milky substance which may indicate the intake manifold gasket failure common to these vans equipped with the 3.4L engine.


My 1996 Pontiac sunfire low coolant light won't go off though the coolant is not low and every once and a while my check engine light come on and when that happens my ETS goes off what my problem?

both lights, the check engine and the low coolant light need to be reset and only a GM dealership can do that because they are the only ones that have the codes


What causes the check engine light to stay on in a 2002 Pontiac Montana?

Good Chance this is caused by a faulty O2 Sensor. I had the engine light stuck on in my 2002 Montana and replaced rear O2 sensor and it turned it off.


Large red circular warning light with red waves of fluid on 2001 pont Montana?

check coolant level in overflow reservoir


1999 Pontiac Montana brake light bulb replacement?

In order to change the brake light, check your manual for directions. You will need to remove the cover and replace the burnt out bulb.


How do you replace brake light on 2000 pontiac montana?

To replace the brake light on a 2000 Pontiac Montana open the trunk to reveal the housing units. Find the lights and pull the bulbs out. Replace the units.


How do you reset the low coolant lights on the dash on a 2003 Pontiac Grand Am?

usually when you add coolant light goes off Coolant sensor bad?


How do you reset the engine coolant light on Pontiac Sunfire?

Fill your coolant reservoir and the light should turn off. Do it soon or your engine may over heat.


What causes coolant light to flash on an off on a 97 Pontiac grand prix?

low antifreeze , or faulty coolant sensor .


Have a 1995 Chevy Monte Carlo and low coolant light is flashing?

Check your coolant level...


How to reset low coolant light in 1999 Pontiac trans am?

First check coolant levels, if they are correct. Try disconnecting the battery ground connection for 5 minutes to clear the prom, then reconnect and start the car. If the light is still on, then the sensor is bad, and must be replaced.


Coolant light comes on on 2007 yaris?

Check coolant level in coolant recovery tank and radiator


Will low coolant cause check engine light to light?

yes


How do you reset the low coolant light on 97 Pontiac grand prix?

there is no reset you have replace the low coolant sensor and flush cooling system and use dexcool coolant.


Why does low level coolant light stays on 1999 Chevy Malibu?

if coolant is ok!! then check coolant sensor.


What does the Check Coolant light mean on a 2000 S430 Mercedes?

Low coolant level.


How do you reset low coolant light on 1999 Pontiac?

Refill the reservoir with coolant and the light should go out unless the switch is broken. Where is the temperature sensor for motor? one for computer


Why is the low coolant light flashing in your 2000 Pontiac grand prix se if the coolant recovery tank and radiator are filled?

its a dance party


Low Coolant light on a 2003 Pontiac Grand Am GT?

after you fill the coolant bottle, tap on the side with a screw driver, your float is sticking, this also happens with the washer fluid bottle. if that don't work check your wires going to the bottle


Why would the 2002 Chevy Tahoe check coolant light come on?

Because the coolant is low.


Will the check engine light on a Toyota Highlander come on when the coolant level is low?

It is possible that a check engine light on a Toyota Highlander will come on if the coolant level is low. Usually, though, there is another light that will come on that says 'low coolant' on some older Toyota's.