the water/coolant has not been returning back to the radiator...i changed my water pump, filler neck, filler neck cap....can a thermostat cause this? my car is not overheating though the stock temp gauge is 1/4 up normal i guess and the AUTOMETER temp gauge is alil under 180....the add coolant light keeps coming on but when i go up to 3500rpm it goes away when i slow down the light comes back on.....i bleed the cooling system 4 times since i change all that i mention...and also my when i turn the wheel the idle drops til it dies out sometime

 

do you have power steering? related to the turning the wheel and idle drop problem...

 

You have a leak in the cooling system. When the system heats, it expands into the overflow tank. When the coolant cools, it contracts, creating a small vacuum that pulls the coolant back into the radiator. You have a leak that allows air to be pulled back in under vacuum instead of the coolant from the tank.

This can easily be caused by leak stop plugging the return in the radiator cap.

Also, if you did not change your radiator hoses and you are using the oem hose clamps, it is important to make sure the clamps are exactly in the old indentions in the hose. If the clamps are not in the old indentions they will leak.

https://www.rx7club.com/showpost.php...7&postcount=11

And search, there are lots of threads going about this same exact problems right now.


Good luck

 

replace the hose that goes from the cap that goes to the overflow tank.