GT500 HE Pump Quits Flowing

[blackgt87]

I have a buddy with a 2010 GT500 and his pump for his HE keeps losing flow. It will run but not move any fluid, he said it doesn't leak anything from anywhere and none of the lines are kinked or bent hard enough to kink when hot. It will sometimes do it stone cold first thing in the morning, and sometimes stop flowing halfway through a drive after the car has already been hot and the pump was flowing while hot. As far as I know the only mod to the HE system is a dual fan AFCO HE.

I told him maybe the pump was just taking a shit so he took it off and took it apart and found a tiny piece of white plastic lodged in it. Drove it 2 more times with no problems, then the third trip it quit flowing again. He is taking the pump apart again to see if anything else is stick in it, still has no idea how plastic got in there.

Any ideas on what is causing this or how to fix it?

 

[stkjock]

Sound like he may have air in the system. Most common cause of flow issues.

Did he notice the issues shortly after the HE upgrade?

 

[blackgt87]

He has taken the hose off the pump and let it run until the water started circulating well, but I dont know if that's the right way to bleed air or not.

I dunno if it was shortly after or not, I don't think so

 

[908ssp]

This is one time when the factory got it wrong. The pump should be located directly under the reservoir. There should be no restriction the water should flow into the pump by gravity alone. Then the pump has to do all the work to push the water through the system. Sorry this is no help.

 

[blackgt87]

It seems like he can drive the car twice, and on the third time it quits. It takes a couple heat cycles to happen.

 

[908ssp]

I have seen cases where the intercooler water gets vaporized due to the excessive IAT put out by the blower. Usually comes when the blower pulley is smaller than normal so that the blower is spinning too fast creating heat rather than boost. If he is using a stock Eaton they are more susceptible to this than say a Whipple. An Eaton runs cool at low rpm where a Whipple runs hot and at high rpm the Whipple runs cool and the Eaton hot.

 

[blackgt87]

hmmmmm, made me think of something

 

[19COBRA93]

This is one time when the factory got it wrong. The pump should be located directly under the reservoir. There should be no restriction the water should flow into the pump by gravity alone. Then the pump has to do all the work to push the water through the system. Sorry this is no help.

The pump is pretty much right below the reservoir. It's on the other side of the radiator, but it's all pretty much downhill from it. Although, Some of the aftermarket h/e's replace the factory hose with something else, maybe there's a high point that's trapping air.

 

[twisted_GT500]

I had a problem with my pump as well after installing the AFCO HE. The problem ended up being the 'pigtail' that AFCO supplied. It's supposed to connect to the AFCO fans to the HE pump, but when it was crimped on, it ended up slicing all the way thru the wires. At first I didn't notice any problem, as it was working. After awhile my pump stopped, but the fans still worked. Basically it had cut the lines to the point it couldn't conduct enough electricity to run the pump, but could the fans. Found the problem after hours of searching, AND replacing the pump. Soldered everything together, heat shrink tubed it, then taped (better safe than sorry)...and haven't had a problem since!

 

[blackgt87]

I had a problem with my pump as well after installing the AFCO HE. The problem ended up being the 'pigtail' that AFCO supplied. It's supposed to connect to the AFCO fans to the HE pump, but when it was crimped on, it ended up slicing all the way thru the wires. At first I didn't notice any problem, as it was working. After awhile my pump stopped, but the fans still worked. Basically it had cut the lines to the point it couldn't conduct enough electricity to run the pump, but could the fans. Found the problem after hours of searching, AND replacing the pump. Soldered everything together, heat shrink tubed it, then taped (better safe than sorry)...and haven't had a problem since!

Thanks! I will let him know!