Question about 2006 Pontiac Grand Prix
I bought the car used last yr with 28xxx and every morning last year when it was cold the pump was really loud for a few mins and fade away slowly. Now the po411 code is coming up and now I'm not hearing the pump this year at all when it is cold, think the pump is not working. Is it normal for the pump to be so loud like that or was something going out then??? Now with this code on the Auto Start does not work and that is a bummer. Is this something that a "shade tree" repair person can tackle??? LOL Thank in advance for any help with solving this problem.
The pump should be fairly quiet. There not too hard to replace, just a hose and a power connection. Check the fuse that works the pump first. If it is blown you will probably need a new pump.
Posted on Dec 01, 2008
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Posted on Jan 02, 2017
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Dec 29, 2015 | Cars & Trucks
Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold.You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather.
Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures.
Re ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.
All three of these problems can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm.
i hope it was convince answers
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