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So I have been building a Single Turbo R32GTR from a car i found buried under junk in a shed for over 3 years with a blown up head gasket. http://forums.gtrcanada.com/gt-r-pro...r-r32-gtr.html
So since buying the car, I have had one persistent issue that I may have figured out finally. Since running, I have had a bucking/surging when under WOT in 4WD. I figured out by accident one day that if i pull the 4WD fuse, the car doesn't do it at all, but when in 4WD is bucks violently, and chirps the tires around corners, and just basically acts like an asshole.
So last night I said **** it, and started looking into ****, begining with checking the Atessa for codes, and none flashed, then the G sensor, and its good, calibrated correctly (tested pots all 2.50v), and then tested outputs at g sensor and atessa, all good. Then i bled the atessa system and put in new fluid, everything seemed to work good, until i noticed that the atessa pump didn't pump continuously, but instead little blurps for 1/2sec at a time. You could hear a relay click and it would pump for a second, then shut off, then click and pump again, over and over. I didn't think anything of it, until i though about hose it surges the same way. So when I checked with a few locals, when they bled, their pump turned on continuously when bleeding, like a fuel pump would.
So this being said, I understand the ETS pump on top of the rear diff works like a jet pump in your house, has a pressure switch which in my case i believe to be reading wrong, thinking its full pressure right away and turning off, then back on again, over and over. My question is if the ETS pump has to be replaced, or is their an external pressure switch I can replace first. And does anyone have one i can have cheap lol
So since buying the car, I have had one persistent issue that I may have figured out finally. Since running, I have had a bucking/surging when under WOT in 4WD. I figured out by accident one day that if i pull the 4WD fuse, the car doesn't do it at all, but when in 4WD is bucks violently, and chirps the tires around corners, and just basically acts like an asshole.
So last night I said **** it, and started looking into ****, begining with checking the Atessa for codes, and none flashed, then the G sensor, and its good, calibrated correctly (tested pots all 2.50v), and then tested outputs at g sensor and atessa, all good. Then i bled the atessa system and put in new fluid, everything seemed to work good, until i noticed that the atessa pump didn't pump continuously, but instead little blurps for 1/2sec at a time. You could hear a relay click and it would pump for a second, then shut off, then click and pump again, over and over. I didn't think anything of it, until i though about hose it surges the same way. So when I checked with a few locals, when they bled, their pump turned on continuously when bleeding, like a fuel pump would.
So this being said, I understand the ETS pump on top of the rear diff works like a jet pump in your house, has a pressure switch which in my case i believe to be reading wrong, thinking its full pressure right away and turning off, then back on again, over and over. My question is if the ETS pump has to be replaced, or is their an external pressure switch I can replace first. And does anyone have one i can have cheap lol
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