Can't find coolant leak

[brianstarr58]

I have a 95 vert 3.4 dohc with 126,xxx. When I first start it up, it leaks coolant, but I can't tell where it 's coming from. Then after it warms up, it doesn't leak anymore. The coolant is visible on the ground and appears to coming from the drivers side somewhere but I can't tell. It leaks about 4 to 8 ounces. I let the car sit for 20 minutes and no leaks. But once it's cold...it leaks. Also the temp gauge seems low...around 120 degrees. Any ideas?

[bodeen2007]

my 3.1l lumina was doing that . It was pissing me off cause i couldn't find any sign of a leak. I found out that it was my water pump it was leaking out of the little hole that are on the front but the only way i found that out was taking the water pump pulley off. I would try there .

[Crazy K]

probably time to do your full intake gaskets. there are water passages that could leak in that area, and it would be a driver's area leak.

[White93z34]

I'd say most likely it is that heater core pipe that runs into the side of the intake manifold. Remove the airbox and watch it with a flashlight when the car is cold

[94GPGTP]

The o-ring between the UIM and LIM??

[brianstarr58]

Found coolant leak...it was the intake manifold gasket. That explains why it would stop leaking when the car warmed up. The shop where I took it charged me $250. Was that a good price?

[Crazy K]

that seems average.

 

You could have done it yourself, with a little help from your friends. that gasket is not that hard to do.