Cooling Issue. WTF?
#1
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Hi- 1990 miata, FM Vodoo II. NewKoyorad radiator. NEw T-stat- New Cap - ( new means 6 months old or less). About 3 weeks ago, one of the cooling lines coming off the turbo failed. Luckily, it failed coming down my block so there was no extended driving with the leak or insufficient coolant. The failure was that the hose tore at the make barb where it attaches to the turbo. I repaired the hose, made sure the hoses were not up against anything hot ( manifold, etc), put some heat shield tape loosely around those hoses, and refilled the radiator, burped it etc.
Car would run hot (i.e temp gauge clearly to the right of center) after using boost on the highway or if the car was sitting on my driveway idleing. At low driving speeds of say 35-40mph, the temp would be fine. I confirmed that my fans are both turning on.
I pulled the thermostate out and the car seems to run somewhat cooler, but it not back to just slightly left of center on the temp gauge, and I do see the temp rise after coming off the parkway.
Prior to the hose failing, the temp was rock steady just left of the center of the temp gauge regardless of how hard I ran/how much boost I use etc.
I am almost out of ideas here. I freak out when the temp gauge starts to move to the left of center. Turning on the Heater or the AC on "hot" bring the temp back to where it belongs in fast order.
Any ideas?
Car would run hot (i.e temp gauge clearly to the right of center) after using boost on the highway or if the car was sitting on my driveway idleing. At low driving speeds of say 35-40mph, the temp would be fine. I confirmed that my fans are both turning on.
I pulled the thermostate out and the car seems to run somewhat cooler, but it not back to just slightly left of center on the temp gauge, and I do see the temp rise after coming off the parkway.
Prior to the hose failing, the temp was rock steady just left of the center of the temp gauge regardless of how hard I ran/how much boost I use etc.
I am almost out of ideas here. I freak out when the temp gauge starts to move to the left of center. Turning on the Heater or the AC on "hot" bring the temp back to where it belongs in fast order.
Any ideas?
#4
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Hi- yes I burped it. The radiator is an aluminum Koyorad. Weird thing is everything ( temp) was 100% fine for 8-9 months before the before the hose repair even on the hottest day.
Right now I have 100% water in the radiator. No coolant. Is that a problem? Should I go back to 70/30 water/coolant? thanks
Right now I have 100% water in the radiator. No coolant. Is that a problem? Should I go back to 70/30 water/coolant? thanks
#12
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Post pics of ducting between mouth and front of radiator.
8 Months ago, it was the end of October, now it's the end of June, your car is starting to see actual heat for the first time, and you're not getting enough air "through" your radiator since cutting the big hole for your new intercooler.
8 Months ago, it was the end of October, now it's the end of June, your car is starting to see actual heat for the first time, and you're not getting enough air "through" your radiator since cutting the big hole for your new intercooler.
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