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Fox Body Engine Water Temp
Question guys. New to me Cobra that used a 93 Fox Body donor. It’s got the speed hut gauges. Either My gauge seems to read artificially high, or my car is running hot. The gauge regularly see 120-140 degrees Celsius. Generally speaking it is 120-130.
Any ideas on where to start?
Today I’m going to let it warm up and take a temp gun and shoot a few areas to see if it is gauge issue or if it really is a heat issue. Seems to me that if it had got that hot, I’d have some obvious issues.
Are there any known “gotchas” with the cooling system that I should look for?
Thanks,
X
Last edited by Xkuzme1; 09-26-2019 at 08:01 AM.
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Senior Member
140 c would be like 284 F I am pretty sure that would smoke the head gaskets if you were really seeing that kind of temp.
Richard
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Senior Member
New problem? First start? What did your heat gun show at the thermostat?
Steve
Texas Cobra Club-Austin
July 2009 FFCars Picture of the Month
FFR3542K, 347 C.I., EFI, T-5, 3-Link, Miata Front Sway Bar, Red with White Stripes
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Senior Member
What is the starting temp of the gauge? If it's higher than ambient you may want to check the water temp sender. I ran into an issue with "overheating" temps being reported as well.
My manifold has two sensors, one for the Holly sniper and one for the gauge. I got them mixed up and while my temp gauge was not even registering 70f, my sniper was showing it jumping to 220f and still climbing higher if I would have ran it for longer. Swapped sensors and they both are now reading fine. My clue was that the sniper was showing 150f as soon as I started it. Different sensors have different resistance, which was causing my issues.
Mk IV base kit #9273 Delivered 1/29/2018
3-link Moser 8.8 3.55
TKO 600
427w by Fordstrokers w/Holly sniper efi/hyperspark distro and ignition
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Ok, went on a long drive. Temperature gauge reads about 25-30 high. I went on a nice long drive, and shot the in/out radiator hose and temps were right where I’d like to see them. I ordered a new sending unit. Hopefully that fixes the problem.
Thanks for your help and ideas.
x
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