Hey everyone,



I finally got my car running tonight after almost a year. I have replaced my AST with a Bypass kit that I bought from Mazda, it is for the radiator on the FC models. Same as M2's kit. My question is this....the kit I got from Mazda came with a pressureized cap, and our cars use a regular cap. I was using the pressurized cap since it came with the kit, but my car keeps overheating, so I have to pop the cap, get some fresh water in the neck and let it cool down, I put the cap back on and it starts to overheat again....could the cap be my problem, or is there something else going wrong?



Does anyone have the M2 AST Bypass kit and know what their cap looks like that came with it?



I am having some other problems as well with all the changes my car overtook.



My coolant light comes on and beeps, could be that cap as well though.



My oil light comes on, but the oil is full, the pressure gauge reads fine, I am assuming it may be my oil sensor in the pan. I am going to check it out as well.



My Overheat Exhaust System light stays on.....don't know why? What causes it to go off? The O2 sensor? I have an exhaust leak in my DP where I used to have an EGT gauge mounted, but now I just have a bolt in it and it is leaking around it. That will be fixed, but the overheat light going off is my question.



The car seemed to idle ok, outside of the searching for a new idle, but it ran fine, then it started to overheat.....I am hoping it was that cap.



Oh....one more thing. My fans are not coming on with the car running....but once I shut the car off, they come on and work fine. They are setup to come on at 83'C via the PFC. They don't....but they do stay running until it drops back down to 82'C then they shut off....so they work right when the car is off, but when it is running, they don't come on at all. Why might that be?



For the record my car has recieved a new BNR ported motor, new T78 turbo kit, huge fuel system, HKS Twin Power, Greddy 3 row FMIC, AST Bypass kit, Hyperground ground straps, removed ABS, PS, and AC.



I have a loose ground on the started side of the wiring harness....it is a thick 2-4 gauge Black wire w/ a yellow stripe. I think it used to ground my PS, but now it is not grounded.....did it ground more than just the PS? I tried to find a place to ground it, but I couldn't. Does it do anything?



Sorry for the long post.



Thanks,

Scott

If you remove the ast you should use a pressurized cap on the filler neck.



Do you happen to have the part number for the filler cap? I'm going to order one from malloy this week.

That black ground wire with the yellow stripe goes to the motor. There should be a hole on the bottom of the driver's side for a bolt. Thats where it goes.