Question about 2000 Pontiac Grand Prix
I have a 200 Grand Prix that continuously loses coolant. Not a lot of coolant but I seem to have to top it up every couple of weeks. When the coolant gets low, the temperature gauge acts erratic and goes very high then drops back to normal. I'm guessing that the sensor must be reading incorrectly because of the large swings in temperature - I can't see the coolant changing temperature this quickly. (Maybe the sensor is no longer in the coolant when it gets low?)
Coolant does not seem to be leaking into the cylinders as the oil does not appear cloudy and there are no indications of a coolant leak to the outside of the engine.
Can't smell coolant in the car so it doesn't seem like it's the heater core either.
Any ideas?? Where could the coolant be going?
Dennis is right on target. I had the same problem and had to change the intake manifold gasket. Sad thing pontiac knew this was a problem but did not recall. They had the cheap plastic gasket which is known to deteriorate. I replaced it with a copper gasket and problem solved. After you do this then add your coolant and don't forget to bleed the air out of the system or the temperature will climb. How do I know this? I fogot to bleed system and the car overheated. The bleed screw is on the top of the manifold and should be blue in color. Good luck
Posted on Apr 18, 2015
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 08, 2013 | 2004 Pontiac Grand Prix
May 26, 2012 | 2000 Pontiac Grand Prix
Jun 05, 2011 | 2000 Pontiac Grand Prix
Nov 19, 2009 | 2004 Pontiac Grand Prix
Sep 23, 2009 | 2000 Toyota Celica
May 24, 2009 | 2000 Pontiac Grand Prix
Mar 18, 2009 | 2006 Pontiac Grand Prix
Jan 04, 2009 | 1996 Pontiac Grand Prix
808 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: