Coolant leak

buick
lesabre

#1

My 2003 Buick leasable has a liquid on top on engine I think is antifreeze and I recently got a code on the liquid coolant sending unit. I have to add coolant, but car has never been real low of fluid or hot. What do you think is this a common problem with this car? Where is the coolant sending unit?


#2

The most common cause for coolant on top of the engine on your vehicle are failed intake manifold gaskets. Have you checked the condition of the engine oil?

Tester


#3

Have oil changed at local garage and never noticed and sign of water in oil, no milkey look. What do you think about coolant sealer?


#4

i have a 2004 Buick lesabre that smelled for quite a while of coolant smell. i finally noticed that it was leaking slightly from the intake manifold gasket. a usual problem for this car. some blamed dex cool-- some said no. it really did not leak much---- but the smell ( not inside) but when you got out of the car was brutal. i had it fixed by my mechanic. so far so good. i was worried it would some how ruin my engine if the leak got worse. i think it cost between 300 to 400 to get it fixed. i had a couple of new tires put on so i don’t remember the exact cost just for the gasket fix. but it’s close. i love my car so it was worth it. good luck


#5

Don’t know where your thermostat is located at but if its mounted on top of the engine you might check to see if the thermostat houseing or hose is leaking.