Cooling system issue Need help ASAP
07-11-11, 05:28 PM
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Cooling system issue Need help ASAP
Hey guys I have a really weird cooling system issue. My temps are reaching 95-109 deg celsius when cruising which is too hot. the weird thing is that when I idle the temps drop constantly back to within the 70's . Also the coolant is being forced to the overflow bottle untill it is full. i have no leaks. some body help me please.
07-12-11, 08:50 AM
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the fan is shrouded but your saying the shrouding may be preventing the air from flowing through freely? i dont have the undertray on at the moment
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07-12-11, 09:35 AM
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Air pocket?
when the engine is cool and rad. cap off, try squezing the rad. hoses by hand and see if you get a "burp" from the rad. maybe air could be blocking coolant flow.
07-12-11, 02:28 PM
#11
the setup is a 87 TII with
- aftermarket 3 core aluminum rad
- electric fan from a mercury villager https://www.rx7club.com/forum/showthread.php?t=895916
-BNR stage 4 turbo
-aftermarket intercooler
-megasquirt ecu
need to know anything else?
- aftermarket 3 core aluminum rad
- electric fan from a mercury villager https://www.rx7club.com/forum/showthread.php?t=895916
-BNR stage 4 turbo
-aftermarket intercooler
-megasquirt ecu
need to know anything else?
07-12-11, 03:48 PM
#12
aftermarket FMIC and a 3" radiator?
do you still have ac condenser in the car?
my opinion is you either need a water pump because its not pumping properly, or I really think the radiator is too thick when combined with the FMIC and even worse if there is a AC condenser still in the car
also- what kind of shroud do you have around the radiator? does it cover the entire radiator?
do you still have ac condenser in the car?
my opinion is you either need a water pump because its not pumping properly, or I really think the radiator is too thick when combined with the FMIC and even worse if there is a AC condenser still in the car
also- what kind of shroud do you have around the radiator? does it cover the entire radiator?
07-12-11, 04:52 PM
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ok So I was driving it today and I really think it is a blown seal because when im driving after it warms up the temps climb steadily but once i get off the throttle and coast or sit at a light the temps drop. I think when on the gas I have a bad seal and that the exhaust gasses are entering the coolant and heating it up. only thing is that i dont have any white smoke coming out the back. ....
I dont have an ac condenser im running rad in stock location with stock intercooler to figure this issue out.
I dont have an ac condenser im running rad in stock location with stock intercooler to figure this issue out.
07-12-11, 05:39 PM
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no i had a v-mount setup with the stock rad, but when i got a new rad i put the stock intercooler on and put the new rad in the OEM location to figure out what was causing the cooling problems.
Thinking it might be a bad coolant seal, but i don't have any white smoke??
Thinking it might be a bad coolant seal, but i don't have any white smoke??
07-12-11, 06:21 PM
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hook up the fan to HI Speed.
I have the same fan on my car with a FMIC and the car would get up to 190's and up on LOW.
I switched it to HI and I sit at 176 degrees.
I have the same fan on my car with a FMIC and the car would get up to 190's and up on LOW.
I switched it to HI and I sit at 176 degrees.
07-12-11, 06:27 PM
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i've got it hooked up on high speed. If i'm correct it's the BLUE/RED wire on the fan.
The condition of the pump seemed to be fine, came off a spare engine a couple of days ago because my pump started to leak from the weep holes.
The condition of the pump seemed to be fine, came off a spare engine a couple of days ago because my pump started to leak from the weep holes.
07-12-11, 06:33 PM
#22
this is the EXACT same thing that happened to me. i would get into the 200's while cruising and then suddenly lower when i would stop the car. it puzzled me. but for hsits and giggles, i got an undertray. BLAMO, problem went away.
btw, corksport rad, fanshroud, and using the stock fan.
btw, corksport rad, fanshroud, and using the stock fan.
07-12-11, 06:49 PM
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this is the EXACT same thing that happened to me. i would get into the 200's while cruising and then suddenly lower when i would stop the car. it puzzled me. but for hsits and giggles, i got an undertray. BLAMO, problem went away.
btw, corksport rad, fanshroud, and using the stock fan.
btw, corksport rad, fanshroud, and using the stock fan.