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Old 11-27-2011, 04:08 PM   #1
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Default coolant blowing up through throttle body

I have a 99 chevy suburban k1500 5.7 vortec that has coolant coming up through the throttle body as steam. This happened shortly after stepping on the gas to pass another vehicle. I don't know how the coolant runs and have no idea where to start looking. Any help is appreciated.
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Old 11-27-2011, 04:23 PM   #2
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just checked the oil and it does notb look good, coolant in the motor oil.
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Old 11-27-2011, 07:09 PM   #3
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Start with pulling the throttle body. I believe you have coolant passages that enter the TB. You may have blown the throttle body gasket.
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Old 11-28-2011, 07:50 AM   #4
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if you have coolant in the oil its likely head gaskets. those engines are notorious for intake gaskets and water pump gaskets. so i would change the water pump while its down if you havent yet
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Old 11-28-2011, 07:57 PM   #5
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funny you mention the water pump, replaced that about three weeks ago. Does removing the intake also call for removing the distributor and what do you think I would be looking at ($) to have the work done.

Thanks for the replies.

Trying to decide if it is worth saving since I also have that notorious hard shift from 1st to 2nd when the transmission gets warmed up but drives fine until then. Funny that when you turn off the engine for a few minutes that it goes away for a little while.

But mainly focussing on getting it running again.
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Old 11-29-2011, 07:18 AM   #6
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the heads are going to have to come off so everything on top of the engine will have to be removed. i cant say how much it will be i do all my own work. if you dont feel you can do it get several estimates
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Old 11-29-2011, 03:07 PM   #7
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i would charge about 250-300 do do something like that but im usually alot cheaper than other shops..So hopefully that gives you a low end ball park on having it done
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Old 11-29-2011, 05:54 PM   #8
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thanks for the replies, now I need to decide what to do. Again thanks.
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