intercooler water pump wiring (guys that did it please read)

[Rendog]

Ok guys. I've reversed the wires on my pump, just like everyone else has. My question is to the people who claim they can see a difference in the flow via the filler tube. Several have said the could, others said they couldn't. I happen to be one that could not see any difference. So, I decided to investigate further. I removed the connector, and wired the pump to 12v with the engine off, looked at the filler tube, then reversed the polarity and looked again. Since the engine was not running, I could easily hear the pump run, but I could NOT see any flow difference. So, this is really just a reality check. I don't dispute that it was wired wrong, just couldn't personally see any visable difference. Comments welcome.
Rod

[Signals]

It probably depends on how full the filler tube is. If it's low enough, you will see the flow when wired correctly. But even when it's wired the correct way, the system only moves about 3 gallons per hour. Definitely better than the before which would pump less than 1 gallon per hour.

[Rendog]

Ok, so the guys the claim to see a definite difference in flow are seeing the difference in 1 gph vs. 3 gph, which is 0.036 oz/sec vs. 0.1 oz/sec. Hardly seems like this would be a visable difference. How did you come up with these flow rate numbers?

[kazkillinger]

what are u squirrels taLKIN about rewiring what?????????

[WopOnTour]

Originally Posted by Rendog

Ok guys. I've reversed the wires on my pump, just like everyone else has. My question is to the people who claim they can see a difference in the flow via the filler tube. Several have said the could, others said they couldn't. I happen to be one that could not see any difference. So, I decided to investigate further. I removed the connector, and wired the pump to 12v with the engine off, looked at the filler tube, then reversed the polarity and looked again. Since the engine was not running, I could easily hear the pump run, but I could NOT see any flow difference. So, this is really just a reality check. I don't dispute that it was wired wrong, just couldn't personally see any visable difference. Comments welcome.
Rod

It's more the DIRECTION of flow through the charge air cooler radiator (aftercooler) affecting it's transfer efficiency in removing heat from the air charge that makes the real difference. My discussions with Field Engineering has indicated that it could result in a 10-15 HP loss under high ambient conditions- (although I have yet to hear of anyone to actually "dyno test" to determine this.) Flow rate might be affected somewhat as of course the design engineer had a specific flow direction in mind, But whether a change in flow rate can be observed visually?... who cares!

JMO
WOT

[Rendog]

Originally Posted by WopOnTour

It's more the DIRECTION of flow through the charge air cooler radiator (aftercooler) affecting it's transfer efficiency in removing heat from the air charge that makes the real difference. My discussions with Field Engineering has indicated that it could result in a 10-15 HP loss under high ambient conditions- (although I have yet to hear of anyone to actually "dyno test" to determine this.) Flow rate might be affected somewhat as of course the design engineer had a specific flow direction in mind, But whether a change in flow rate can be observed visually?... who cares!

JMO
WOT

As far as who cares, I agree. I don't really care, it was more a curiousity that some people could apparently observe a definite difference and other (including myself) could see no difference. Noticing a definite flow increase would give a indication that it really was wired incorrectly to begin with. Thanks for you thoughts.

[jmichna]

Rendog,
In my case, I did not want to see that my intercooler was wired wrong.... had too much "faith" in Saturn. Prior to checking the wires, I had about 0.5 inch (10-15mm) rise of coolant in the vertical tube... with the engine at idle or brought up to 4K I could only see a slight "rise" of coolant toward one side of the vertical tube. It was very difficult to discern any coolant flow versus fluid "movement" just due to engine vibration.

After reversing the wires, so that (black) positive was to the + connector, and (black & white) wire was connected to the negative connector, I could see a "rush" of coolant flow, plus burbling up the vertical tube.

It sure seems to me to be definite difference.

Also, I just completed an (approx) 290 mile run from Skokie, IL to Southfield, MI, in a little more than 4 hours (albeit it was cool) and I did not see a drop in high end power after I exited the highway. Prior to exchanging the wire position, after making this drive, it seemed the engine would "bog" a bit on hard excelleration on 12 Mile Road.

[kazkillinger]

ok i did it to and i drove 40 miles (1p.m. 89 F) and no bog or hesitation since i did it yesterday

[Rendog]

Originally Posted by jmichna

After reversing the wires, so that (black) positive was to the + connector, and (black & white) wire was connected to the negative connector, I could see a "rush" of coolant flow, plus burbling up the vertical tube.

What do you mean by a "rush" of coolant flow, and when did you see this "rush"?
I observed absolutely no difference with regard to the vertical tube. As far as performance goes, I haven't driven my car enough to know if it made any difference. I'm not disputing that it was wired incorrectly, just the observable results.

[The Duke]

Just look under my car today, and notice the wiring is inverted to.
Is anybody report that to a dealer and did they correct that?