So I have a 92 jdm pretty much stock, pfc cai cat back, relocated battery. So I started my cat up one morning and beeeeeeeeeeeep! My coolent light came on so I shut my car off and look in my water pump cap and there was no coolent or very little, my resavor was almost empty... No puddles under my car and no coolent in my oil, it still looks good. So I filled it up and bleed as much air out as I could then ran it for a while and check it, looked all fine... Few days go by and no problem still full no movement of levels.... About 3 weeks go by and started my car up in the morning and beeeeeeeeeeeep so I shut it off again and check. My res tank was full but in the water pump was low so I filled it up and no problems since.... Any ideas? I'm going to out my aluminum rad in soon and redo my all the hoses and get a aftermarket ast...

 

if u have no leaking issues, then you did not burp the air right.

cuz when u have air in it, it burps the cool"a"nt out more than it should.

 

You're not smoking crazy thick white smoke right? Grab a coolant pressure tester and pressurize the system. Ensure there is no leakdown after several hours [some people go as long as 24 hours]. Did you recently do any cooling system maintenance? New radiator perhaps? When trying to bleed the air, remove the throttle body coolant line and fill her up. Put the line back on and run it for a bit. When it cools down, top it off. Everyday before you start her up, check your coolant level and the level at the filler neck. top her off until the level no longer drops.

Matt

 

I'll do that maybe I didn't bleed it good enough, and no I never did anything to the cooling system. And only small smoke on start up goes away after 5mins so that's all good. No smoke when driving or boosting

 

^this

When coolant is emptied and refilled, pockets of air form in the various bends of the coolant path. These "bubbles" might not move without serious agitation, and could take time to work their way out of the track. Once those bubbles work their way out, the coolant replaces the space of the bubble, and your coolant level is now low. You may have to top off several times after changing coolant if you fail to bleed all of the air out of the system. It never hurts to pressurize the system and check for leaks though, if for nothing but peace of mind. If the pressure checks out with no leaks, then it also wouldn't hurt to burp your coolant again. There are several threads on the process, a quick search will turn quite a few of them up.

 

So I did some digging and my tb coolant hose the 90 was junk! The pinch clamps all worn out and the hose was not the correct one so I changed it topped my coolant off and bleed any air out that I could and burped the system about 10 times. Also filled the tb coolant line up and bleed it, so let's see if this solves it, thanks for the replys