Water in exhaust

Asked by Jul 22, 2015 at 09:50 PM about the 2013 Jeep Grand Cherokee Laredo 4WD

Question type: Maintenance & Repair

I live in a small northern community where it gets very cold in the winter. As such we
have to start our  2013 Jeep Grand Cherokee up to warm it up. No issues. then we
drive it a short distance to the store or work. Less than a km. We do this 2 - 3 times.
Next time we go to start it just turns over but wont catch. I take into my work garage
and let it thaw out to which it starts. One time i tried to start it in the garage and heard
a big bang from the exhaust. I look and a big black greasy snowball had blown out. In
the summer i can hear the water gurgling in the pipe. I have spoken to the dealership
and customer service with no success. It appears and excess amount of water is
being created then freezes blocking the exhaust. No solutions and winter is 8months
long.

1 Answer

254,245

To tell you the truth, letting it sit idling and driving it less than a km in the winter is slowly killing your Jeep. You need to start it and let it run for no more than a minute and drive off, and drive at least till it gets to operating temperature, usually 5-10mins of driving and a couple miles. Water condensates in the exhaust when you drive it like you do and you found it then freezes in the exhaust. This will also rust out the exhaust quicker and you putting more wear on the engine. You probably should use a block heater in the winter, so your engine oil is nice and toasty when you go to start it. But maybe just find an alternative to the Jeep get to the store or work. (If it's really less than a km.)

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