Car Overheating! No heat either!! Help!!!
I already replaced radiator after overheating first time. After second time replaced thermostat, coolant sensor and had a heater core cleaning done that fixed both overheating and no heat issue.
Now, after going to the Nissan dealer recently for an oil change, I was told everything in car was fine. Then all of a sudden car started overheating again after being on and then driven for all together I would say 20-25 minutes or so. Didn’t experience that issue again the next few times but heat was still not coming. Just blowing that cool air. So, went back to mechanic that fixed it the second time hoping he needs to look at his work again. He tells me the horrible thing that I need the two head gaskets replaced. At this point I just don’t trust the mechanic and take the car back and find out the car keeps on overheating on the way home. Once I reach home, I open the hood and see the coolant overflowing from the reservoir and boiling. Sorry for this long post. I am just annoyed and worried and need some serious assistance. Thanks in advance! |
Take it to Nissan for a diagnostic, tell them you suspect blown head gaskets.
It'll cost you 1 hour of labor and you will have the answer. |
Normally what indicates blown head gasket, water in the oil or oil in the radiator along with a high possibility of water running out your exhaust tips. If you have none of the above, I doubt if your issue is blow head gaskets. I'd still have NISSAN check it out to pin point your problem or a radiator shop do a pressure check!
Gary |
Checked Motor Oil
Originally Posted by gary c
(Post 7165437)
Normally what indicates blown head gasket, water in the oil or oil in the radiator along with a high possibility of water running out your exhaust tips. If you have none of the above, I doubt if your issue is blow head gaskets. I'd still have NISSAN check it out to pin point your problem or a radiator shop do a pressure check!
Gary |
Thanks cleric670@gmail. I did call the Nissan dealer and was told they wouldn't diagnose an Infiniti and the Infiniti dealer near me told me that they would charge $150. That's pretty expensive just for a diagnosis. Anyway, I did do some diagnosing myself and found no white milky stuff on the motor oil. Doesn't look like a blown head gasket to me. What do you think?
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Open the radiator cap with a cold engine and start the motor, see if little bubbles come out over the course of about 10 minutes.
Head gaskets can fail in many ways. |
Tried it!
Originally Posted by cleric670@gmail
(Post 7165606)
Open the radiator cap with a cold engine and start the motor, see if little bubbles come out over the course of about 10 minutes.
Head gaskets can fail in many ways. |
To me this sounds like you have more air in the system. Our cars are notorious for being very hard to bleed at times ut there are a couple of things you can do at home to get more air out. If you have a set of jack stands lift the front of the car up and put it on jack stands. This helps encourage the air, if you have some, to rise to the highest point in the system being the radiator. Get the motor warmed up and massage the upper and lower radiator hoses to see if they both are/get hot, they should be. If they're not you have more air in the system. You want to really take your time next and locate the plastic bleed screw located at the back passenger side of the engine bay. You'll slowly unscrew the screw and are looking for air to come hissing out. Be careful though, the system is pressurized and go slow. What you are looking for is no air to hiss out and have a steady stream of coolant flowing. Look up the bleeding procedure on YouTube for a G35 to get a visual of what I'm talking about.
If all else fails the $150 spent to get a dealer to tell you what's wrong could turn out to be priceless. Don't ever continue to run the motor when the car overheats, it could destroy your motor. |
Nice Alternative
Originally Posted by Blue Dream
(Post 7165662)
To me this sounds like you have more air in the system. Our cars are notorious for being very hard to bleed at times ut there are a couple of things you can do at home to get more air out. If you have a set of jack stands lift the front of the car up and put it on jack stands. This helps encourage the air, if you have some, to rise to the highest point in the system being the radiator. Get the motor warmed up and massage the upper and lower radiator hoses to see if they both are/get hot, they should be. If they're not you have more air in the system. You want to really take your time next and locate the plastic bleed screw located at the back passenger side of the engine bay. You'll slowly unscrew the screw and are looking for air to come hissing out. Be careful though, the system is pressurized and go slow. What you are looking for is no air to hiss out and have a steady stream of coolant flowing. Look up the bleeding procedure on YouTube for a G35 to get a visual of what I'm talking about.
If all else fails the $150 spent to get a dealer to tell you what's wrong could turn out to be priceless. Don't ever continue to run the motor when the car overheats, it could destroy your motor. |
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DO NOT drive your vehicle. You're going to destroy your head gaskets if not already and possibly put a crack in the engine block.
You need to open your bleeder and let any air out. If there is no air try flushing the system again and follow the video above. There could be a possible blockage. I would go out and buy a "Combustion Leak Detector" It checks your head gasket, cylinder head, and engine block for any combustion gas leaks. |
Lisle makes some kick azz products, I've never even heard of this part. Good looking out IS44C.
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Originally Posted by Crankyg35driver
(Post 7165603)
I did call the Nissan dealer and was told they wouldn't diagnose an Infiniti and the Infiniti dealer near me told me that they would charge $150. That's pretty expensive just for a diagnosis. .... What do you think?
Telcoman |
Must be nice to be old and successful and not give a **** about money. One day.
The "bring it to the dealer" approach gets real expensive fast if it's your go-to solution to every problem... Now OP doesn't need to ever again for this issue on any car... |
Ran Diagnostics
Hello again all,
So, I went ahead and ran the diagnostics and they found out it was the water pump. Also not a cheap fix like the head gasket. |
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