Coolant Leak

[9934alero]

I have a coolant leak, in my 3.4. There's no coolant in the oil, and i see no sings of it being burnt. What are some other possible causes?
TIA
-Trav

[JTrujillo86]

Its probably the intake manifold gasket leaking. Sometimes it doesn't show in the oil, but its still possible its leaking.

- Jeremy

[9934alero]

Since I posted last, I went and looked under my car too see if I could find a leak from a hose, and i never found it still, but did notice that the leak is coming from the passenger side of the car (thats where the puddle is) If that is any indication of the problem your imput is appreciated
-Trav

[skrizan]

Passenger side could still be the intake gasket, water pump, coolant reservoir or hoses.

[BNaylor]

Originally Posted by skrizan

Passenger side could still be the intake gasket, water pump, coolant reservoir or hoses.

I agree. I'd check out the plastic reservoir area. There is an overflow hose which will drip out coolant is there is a problem or if overfilled. Also, the cap is pretty flaky so check to make sure it is tight. In order for coolant to come out the overflow the cooling system pressure has to exceed 15 psi which is the rating on the cap.

[9934alero]

I have checked all the hoses and the resivoir, no leak. My resivoir was empty so i'm assuming the fluid didn't come from the overflow tube. I have noticed that the leak seems to be coming from the more front portion of the side. I can "see" no leak from the water pump, but its hard to see from all the congestion. It seems wet underneath it, I can defenantly see some wetness on the top of the part of the air conditioning pully. Does coolant run through that part? Thanks again for all the imput.
-Trav

[BNaylor]

Originally Posted by 9934alero

I have checked all the hoses and the resivoir, no leak. My resivoir was empty so i'm assuming the fluid didn't come from the overflow tube. I have noticed that the leak seems to be coming from the more front portion of the side. I can "see" no leak from the water pump, but its hard to see from all the congestion. It seems wet underneath it, I can defenantly see some wetness on the top of the part of the air conditioning pully. Does coolant run through that part? Thanks again for all the imput.
-Trav

If it is wet underneath the water pump I think you found your problem. It has a weep hole. When the seals on the impellor shaft get bad then it will leak out coolant. Seems too far away from the intake manifold. The AC compressor is right underneath the waterpump so it is catching what is dripping from the water pump.

There is no coolant flow through the pulley for the AC compressor and clutch.

Also, the waterpump has gaskets where it connects to the engine block.

[9934alero]

right on, Is that at DIY or not. new water pump or just gasket?
-trav

[BNaylor]

Originally Posted by 9934alero

right on, Is that at DIY or not. new water pump or just gasket?
-trav

Yes, DIY. I'd get the complete water pump. The biggest part of removing the water pump is getting the serpentine drive belt loosened, then you'll access the bolts on the left hand side by moving the power steering pulley to where the holes line up to access the pump bolts, undo lower radiator hose, remove the black heater return line at top of water pump, and then removing the pump pulley because the new one probably will not come with one. Good luck!

[9934alero]

alright, thanks alot man. much appreciated
-trav