Coolant Disappearing

[I call it maize!]

2000 has been overheating...took it in and the shop put a new water pump on it...now a few weeks later truck is back overheating and apparently "drinking" coolant....no visable leaking but I am having to add coolant...any suggestions?

[chubbybubba1]

When I was loosing coolant, my leak was at the intake manifold. Hard to spot, but it would leak when it was cold, but after coming to normal operating temp., it would seal up and "cook" off any puddles resting in the manifold valley. Warranty at that time, thank GOD. It was leaking near the thermostat housing. Look closely with a flash light way down in there.

[davex28277]

Mine did the same thing. It was the throttlebody leaking from a crack that I couldn't see. I found out by filling the radiator...then running the car hot (full AC) and then watching for leaks...if you don't see it while the engine is hot, check as soon as you turn it off. Mine used to puddle a bit right under the throttlebody (telltale white residue). If it turns out to be the throttlebody--DO NOT have Nissan fix it unless you are under warranty--they will charge around $700. I got a used throttlebody on EBay for $150 and installed it myself (takes 30 minutes to do the job). If you want to email me you can.