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Diagnostic help!
The problem:
I noticed I had intermittent heat (climate control) and so I thought I might have low coolant or a bubble in the system. I did have low coolant so I topped it off and that helped at first. Then it happened again so I looked into more. After some of the initial repairs I still had the same problem with the heat but noticed a bigger problem, the coolant had constant bubbles coming up through the coolant bleeder funnel I was using.
Things I’ve done so far:
-changed water pump
-changed thermostat
-flushed radiator, block, and heater core
-head gasket leak tester
None of these things have fixed the issue and with the head gasket leak test coming back negative it has left me stumped. I did do some research on here before posting and I found a post to where the guy had bubbling coolant but also had coolant sitting on top of the block (I do not have that issue) and it ended up being a seal on the intake. Idk if that would fix my issue. I really don’t want to waste more time replacing things that aren’t the issue. Hopefully this issue is very obvious to someone else, any help would be greatly appreciated. If any more information is needed let me know.
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