Original throttle body coolant setup.
03-28-2011, 05:50 PM
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Car: 1990 Firebird Formula
Engine: LB9 - 5.0 TPI
Transmission: 700R4
Axle/Gears: 2.73, LSD
Original throttle body coolant setup.
Can anyone provide pictures or a diagram of the original setup for the throttle body coolant lines used to prevent freezing of the throttle plates? Based on what I was told the SI at the dealer only dates back to 1996 and I can't seem to find anything in my Chilton. Thanks.
03-28-2011, 06:04 PM
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Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Original throttle body coolant setup.
The water inlet on the front of the TB needs a little "U" shaped rubber hose that connects to a fitting on the front of the intake manifold.
The water outlet on the TPS side of the TB has a short hose running to the heater bypass valve, located right at the front of the bank #2 valve cover.
I think my description is better than the picture.
The water outlet on the TPS side of the TB has a short hose running to the heater bypass valve, located right at the front of the bank #2 valve cover.
I think my description is better than the picture.
Last edited by eseibel67; 03-28-2011 at 06:09 PM.
Awesome! 
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