Cooling system issues.
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UPDATE:
The shop replaced the water pump, flushed the radiator and heatercore. He told me they found a lot of dirt or a sorta sand type dirt inside the heatercore. He used the spill free funnel that screws into the radiator to bleed the air out. When I picked up the car there was heat on idle and everything seemed fine. The next day my heat started to only work while driving again and not on a stop. I checked the radiator when the car cooled down to see if the coolant level had gone down but it was full. And then the day after on my way to work the car started over heating again and there was no heat at all again not even while driving. The bottom hose of the radiator was cold like the previous time. I took it back to the shop and he told me that it’s probably the heatercore??
The shop replaced the water pump, flushed the radiator and heatercore. He told me they found a lot of dirt or a sorta sand type dirt inside the heatercore. He used the spill free funnel that screws into the radiator to bleed the air out. When I picked up the car there was heat on idle and everything seemed fine. The next day my heat started to only work while driving again and not on a stop. I checked the radiator when the car cooled down to see if the coolant level had gone down but it was full. And then the day after on my way to work the car started over heating again and there was no heat at all again not even while driving. The bottom hose of the radiator was cold like the previous time. I took it back to the shop and he told me that it’s probably the heatercore??
Last edited by M.h; Feb 24, 2018 at 10:01 PM.
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From: Washington State
Coupe 6MT Premium RAS
Possibly, does the vehicle maintain a stable operating temperature? Make sure you're checking the oil and coolant level (at the radiator cap, never go off just the overflow) to make sure something doesn't go wrong.
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The car stays stable for about a mile, maybe two and after that it starts to overheat (Not sure if that’s what you meant?). The shop did an oil change after they did the work. I haven’t checked the level though. And the coolant level on the overflow was normal and the the coolant level in the radiator was all the way to the top, it didn’t go down after the car cooled down.
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The G35 is the worst car I have ever tried to get the air out of. Volkswagon Jetta being the absolute easiest car to refill with coolant and remove the air. I will post a video of how it's done because the G is tricky and must have a lot of twists and turns where air can hide and mess-up your results. If you don't have ramps or a floor jack to raise the front of the vehicle, it may be impossible to rid the cooling system of air.
This is not the exact video I was looking for, but it should get it done:
This is not the exact video I was looking for, but it should get it done:
Last edited by superdenso; Mar 5, 2018 at 11:50 AM.
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Same thing happen to me I thought I have thermostat stuck open so i replaced the thermostat still no heat at idle. I bought the spill free funnel it took me almost 2 hours to bleed. Now so far its been 2 months and no problem.
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My mechanic was having trouble bleeding the air out after replacing my radiator. Dropped him off the lisle funnel and when I picked it up he had already ordered one of his own. The funnel is just as important as a hammer is to my tool collection
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