Lower Thermostat ECU Problems?
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Senior Member
Joined: Dec 2004
Posts: 909
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From: New York
Car: 91 Firebird
Engine: 3.1 V6
Transmission: TH-700-R4
Lower Thermostat ECU Problems?
Ive heard that with lower temp thermos, computer problems can arise.What kind of problems and how can they be fixed?
Supreme Member
Joined: Dec 2000
Posts: 2,375
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
at a specific temperature threshold (155 on my LO3, for instance), the TCC will no longer lock. This *can* lead to transmission overheating and failure. Other concerns include the same minimum-temperature criteria for closed loop operation, which will severely degrade fuel economy. As long as you don't go with a thermostat under 170 degrees, you should be fine. (Recently had to ditch my 160 because it was overcooling in winter and dipping below 155 on the highway)
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