04 g35 overheats on freeway. ..
#1
04 g35 overheats on freeway. ..
Hello im having this problem with my car. It's a sedan auto.
I already changed...
Fan clutch
Thermostat
Coolant sensor
Radiator cap
I did the bleed thing. Upper and lower hoses are hot after normal temp. Heater blows hot.
Car works fine on city ones I get on the freeway and after about 5 min of driving car starts to overheat. When this happens coolant it's not boiling or anything.
I dont know what the problem I'm out of clues.
I flushed the system with garden hose. I had no restrictions on engine or radiator. Please help!
I already changed...
Fan clutch
Thermostat
Coolant sensor
Radiator cap
I did the bleed thing. Upper and lower hoses are hot after normal temp. Heater blows hot.
Car works fine on city ones I get on the freeway and after about 5 min of driving car starts to overheat. When this happens coolant it's not boiling or anything.
I dont know what the problem I'm out of clues.
I flushed the system with garden hose. I had no restrictions on engine or radiator. Please help!
#2
Registered User
iTrader: (10)
If you're 100% sure you bled all the air out of the system here's one thing you need to check. Remove your thermostat, put it in a pot and bring to a boil making sure it opens all the way. I had a like issue with a GM car, they replaced everything you can imagine but failed to check the thermostat. It was only opening part way which worked fine around town, at freeway speed it heated up the system because of the restriction.
Good Luck with this...Gary
Good Luck with this...Gary
#3
#5
Registered User
iTrader: (10)
Your temp gauge should always be slightly lower than half, I'd be concerned if it was above half gauge indicating an issue existed! What does your gauge read at constant freeway speed? What did you do to remove the air from your radiator? You're supposed to use the valve in the front bottom of your radiator. This often takes 20 minutes of constantly running your G to remove all the air!
Gary
Gary
#6
#7
You're correct using the bleeder valve by the battery. If you're getting hot air from the heater and your lower radiator hose is hot when the engine is hot you should be good. Other than that is could be a heater core leak, a bad radiator cap or...head gasket. Have you pressure tested the system? What's the HOTTEST its ever reached on your guage?
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#8
Well cap it's new too, that's my next step do a pressure test... air blows hot at idle, upper and lower hoses are hot.
Just to be safe i replaced the water pump. It was a pretty easy job. Now I'm waiting for the coolant to settle I'm warming it and then waiting to cool down and adding more antifreeze. I hope this ends my problem, if not next step pressure test and from there I hope it's not the headgaskets....
Just to be safe i replaced the water pump. It was a pretty easy job. Now I'm waiting for the coolant to settle I'm warming it and then waiting to cool down and adding more antifreeze. I hope this ends my problem, if not next step pressure test and from there I hope it's not the headgaskets....
#9
#11
After more testing I came to the conclusion that my radiator it's clogged.
I did the test with the garden hose At The beginning of all this, but I guess it's clogged in some parts.
I let the car warm up to temperature and till the thermostat opened. Turn off the car and went and touch the radiator.
Had some parts hot and some parts cold so it has to be that. I basically changed everything already (8
I will change it til Saturday, so let you guys know what's up. But i feel positive that that's it....
I did the test with the garden hose At The beginning of all this, but I guess it's clogged in some parts.
I let the car warm up to temperature and till the thermostat opened. Turn off the car and went and touch the radiator.
Had some parts hot and some parts cold so it has to be that. I basically changed everything already (8
I will change it til Saturday, so let you guys know what's up. But i feel positive that that's it....
#12
After more testing I came to the conclusion that my radiator it's clogged.
I did the test with the garden hose At The beginning of all this, but I guess it's clogged in some parts.
I let the car warm up to temperature and till the thermostat opened. Turn off the car and went and touch the radiator.
Had some parts hot and some parts cold so it has to be that. I basically changed everything already (8
I will change it til Saturday, so let you guys know what's up. But i feel positive that that's it....
I did the test with the garden hose At The beginning of all this, but I guess it's clogged in some parts.
I let the car warm up to temperature and till the thermostat opened. Turn off the car and went and touch the radiator.
Had some parts hot and some parts cold so it has to be that. I basically changed everything already (8
I will change it til Saturday, so let you guys know what's up. But i feel positive that that's it....
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