3rd and final 7

iTrader: (9)

for some reason when i let the car sit over night after i get done driving the coolant from the overflow doesnt get sucked back in to the radiator and the water in the t-stat housing is low and it doesnt open the the t-stat. so what i do is crack the housing and the water gets high enough to open the t-stat and it works fine. im not losing any water until i crack the housing. i pour what is in hte overflow tank in to the radiator and its good to go. why is this happpening can someone pls help me pls.

thank you
charles

3rd and final 7

iTrader: (9)

some thing that i forgot to add is that it depressurizes pretty quickly and im also using an overflow tank from a geo metro and it has a hose to bleed off extra coolant when it gets too full.

gsl-se addict

iTrader: (3)

You may have a hole in the overflow line or the overflow tank. As the coolant cools, a vacuum is created and sucks the coolant in the overflow back into the rad. If there is a hole in the line, it cannot do it.

3rd and final 7

iTrader: (9)

ok cool i ll check that out i think i got a spare one sitting around i also read on this link post 13 by wackeyracer below that if my overflow tank is always full and does overflow that my rad cap is bad so im going to stwich back over to my other one bc i didnt have this problem that or get a new oem one.

https://www.rx7club.com/showthread.p...ht=overheating

zduford

Yah i would say most likely that rad cap, if thats all it is fairly cheepo fix!

3rd and final 7

iTrader: (9)

when i drive the temp goes to about 1/2 way but as soon as i slow down or come to a stop it goes down to about 1/3 of the way what could this be? i been searching around there are so many different answers i about fried my brain trying to figure out the solution to this!

zduford

does it happen under WOT at half, then ya slow down to reg speed it go to half....or just regular driving, and AS ur slowing down it goes to half?

and does it happen instantly...or slowly....

Just an idea....check and see if your rad is blocked in the front i know it shouldnt make a difference... but ya neva know.

Is your thermostat working properly ????

3rd and final 7

iTrader: (9)

it starts to happen while i speed up from a stop it stay low for a few seconds and then it goes up to about half way. when i got the car it didnt have any of the shrouds i ll take a pic on the fone today. once i get going the needle levels out a bit and it stays just below half way.

the t-stat is in good working order its not but a month old!

zduford

You said it didnt have the shourd, so does that mean it still doesnt have it ? do you have your oil cooler hooked up still?

3rd and final 7

iTrader: (9)

the oilcooler is hooker up i dont have a fan shroud bc i have an eletric fan that is flush with the rad. i dont have a top shroud but i did make one today, i think i lost about a pint of blood cutting that damn tin with tin snips. all i got to due is take in with me to work tomorrow and have the airframe guys drill 4 holes for me to mount it. while im doing that im going to make a bottom one that i can attach to my my tow hoks that drops low enough to froce air to my oil cooler and radiator. i just got to get some 1/8 in aluminum, cut and shape it and i should be good and i ll see where that get me.

edit: i aslo got a 16lbs stant rad cap to get me by for a few days and it seems to be holding pressure better now and the tank isnt always full

3rd and final 7

iTrader: (9)

heres a pic of the top radiator that i make but not finished yet. nice blood stains! i beleive out blood, sweat and tears into what you got to make you love it more!
i took it for a drive after i made this i used an old shirt that i use for a rag to hold it in place while i drove and the needle still move up and down but while driving it didnt go up as much as b4, so i think that once i make the bottom peice and change the water pump i ll be good. ( crossing fingers) i hope so that is!

zduford

Yeha...blood stains is right!! thats sick man! lol your not dizzy are ya ??? lol

fan shroud on the fan side of the rad is what ya should be trying to find......cause other wise the fan is just going to be putting air from all over, and not nessicarily through the rad......

You want to pull the airthrough as much as you want to force it.

3rd and final 7

iTrader: (9)

yeah you gotta love blood man. if your not bloody your not workin hard enough! LOL!!! when i can get to the junk yard inm going to get a taurus e-fan that fits the radiator. im not able to get the holes and everything drilled bc we have a G.I. party in the B's today so im SOL right so its cool i ll see if i can borrow a drill or something to get it put in place and im going to work on the bottom shroud when i can get the time too. im changing my water pump for ***** and giggles too im gettin t-stat housing to block gasket tomorrow so i ll be able to start on that wensday!

zduford

Lol all right man, let me know how it all goes.!