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Ive found my leak , just under the supercharger is a L shape black hose , seem hard to the touch, has no clamps on it an about 3 inches, i dont know how they installed it with no clampls tho , but mine leaks at hi speeds , having it replaced Monday, try looking there
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How do you flush the radiator in a 1999 Pontiac Grand Prix?
The radiator on a 1999 Pontiac Grand Prix is flushed by draining the coolant, filling the system with water, adding a liquid flush to the system, and running it for a few minutes. The system is then drained, flushed with fresh water, and refilled with coolant.
Where is the radiator cap on a 1999 Pontiac Grand Am?
You don't have a cap on the radiator. The cap is located directly on the coolant bottle
Replacing 1999 Pontiac Grand Am MAP sensor?
were is my 1999 pontiac grand am map sensor location
How much to fix a ignition on a Pontiac grand am 1999?
how much to insall a ignition to a pontiac grand am se 1999?
How do you remove a engine in a 1999 Pontiac grand prix 3.8L?
how to remove a engine in a 1999 Pontiac grand prix 3.8L
Can you show you a diagram for a water pump on a 1999 Pontiac Grand Am?
need to know where the water pump in at on a 1999 Pontiac grand am
Will a headlight from a 1999 Pontiac Grand Prix fit a 2003 Pontiac Grand Prix?
yes
Where is the coolant temperature sensor located in a Pontiac Grand AM 2002?
i have a 1999 grand am se with a 3400 sfi and it's under air intake on the thermostat bellhousing hope this help you out. good luck
How do you change fuel filter on a 1999 Pontiac Grand Am?
how do i chanfe the fule filter on a 99 Pontiac grand am
Why does coolant leak when the engine is off on 99 grand am?
why does the coolant only leak when engine is off on my 1999 grand am?
Why does the Pontiac Grand Prix 1999 continues to over heat?
Could be a multitude of reasons: Low coolant, defective radiator, leaky hoses, blown head gasket...
What is the average lifetime mileage of a Pontiac?
My 1999 Pontiac Grand Am has over 180k
