HE Fans

Riptide

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I was able to get something put together that works. Now I can't get the pump running. It makes a buzzing noise but no flow visible in the degas. System is full. I suspect air locked or bad pump. I tried pinching the hoses, doesn't help.

I'd like to eliminate air lock without having to drain the whole system again. At this point I'm not sure what I need to do next yet.
 

cidsamuth

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I was able to get something put together that works. Now I can't get the pump running. It makes a buzzing noise but no flow visible in the degas. System is full. I suspect air locked or bad pump. I tried pinching the hoses, doesn't help.

I'd like to eliminate air lock without having to drain the whole system again. At this point I'm not sure what I need to do next yet.

Are you 100% sure there is no flow?

I ask because I run the 13/14 GT500 pump with the bypass. Because my bypass is down low and the degas bottle up top, it creates a situation where virtually all flow bypasses the tank because it would have to fight gravity to flow up into the degas -- this creates a true "overflow" tank similar to the engine coolant bottle where you see no circulation. Instead, the degas just acts as a depository for the coolant when it expands with heat, again just like the engine coolant.

Last summer when I installed it, when I first started it up, I thought I had no flow, but it has cooled like a charm. It also contributed to my confusion that the GT500 pump is super quiet.
 

Riptide

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So update.

I have it working now. I drained a good portion of fluid out of the degas. To the point it was below the intake hose coming from the IC. I then blew into the degas and was able to clear the air. Pump now clearly is running good. I can see current in the degas.

Another problem though now. The act of draining, filling, and then putting a more powerful pump on the system must have dislodged some contaminants. It looks like tiny white specks almost like dust. I have a bunch of it floating around in the degas tank now. This wasn't there before and I used fresh antifreeze and distilled when I filled it today.

Plan now is to completely drain the system again (what a waste) and then fill back up with just water. Circulate it. Drain it again. And then refill and see if that clears most of that out.
 

biminiLX

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Probably very common buildup in the system the new more powerful pump has brought to your attention. A quick flush like you’re planning should do the trick. Glad you got the pump running, it’s a worthwhile upgrade.
-J
 

Riptide

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Well, I've filled up the system and dumped it several times now with tap water. Tried letting some vinegar and water sit in there for a while. Filled it up with distilled, run it, then dumped it.

I cannot get rid of what looks like tiny white specks/flecks in the system. Last time I drained it I put a glass underneath to catch some. When I look at it under normal room lighting you can't hardly see anything at all. Looks good enough to drink. When I shine a flashlight through it though, it's a different story. Some of this looks like micro bubbles. What kind of "clumps" together and floats on the surface though I'm not so sure about.

Kinda tired of fighting with it but not sure what else to do at this point.
 

Riptide

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Initial results after removing the fans and upgrading the pump are basically meh. At cruise, temperatures are slightly lower. As in about 2-4 degrees. At idle, they are higher by at least that much.

My temps are still not good. Cruise temps are easily 50 over ambient. At idle, can get close to 55-60. Car driven for a good 30 minutes and idled at lights, etc. for these values. Also, this is after refilling the system with an 80/20 water antifreeze mix. The system is primed, there is clearly circulation going on, as the mixture is moving in the degas.

I am beginning to suspect that part of this is due to a IAT2 sensor reading high from baseline. The car has always been this way since I installed the kit. I am considering replacing the sensor to eliminate that.
 

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