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Is the water pump bad?

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New User

Jun 4, 2016, 7:56 AM

Post #1 of 3 (680 views)
post icon Is the water pump bad? Sign In

Hello all
I am driving a 2006 Hyundai Elantra GLS with an automatic transmission
yesterday I just replaced the radiator, thermostat and gasket, as well as the upper and lower hoses and clamps.
strangely enough however, I only have heat if I drive the car or I have been driving for awhile (like down the highway) even when idling at operating temps

I don't see any leaks.
The only thing that seems to stick out is the lack of heat.
I popped the cover off again and checked the fluid levels/released air and topped off the reservoir

The top radiator hose is hot but the bottom is cold and almost seems to be lacking pressure, or had a lot less pressure than the top.

Could this be the water pump??? The is no whining noise or leaking. Is the a way to treat the water b pump without having to unbury the thermostat and take it out

Looking forward to your replies

Ultimate Carjunky / Moderator
Discretesignals profile image

Jun 4, 2016, 8:10 AM

Post #2 of 3 (676 views)
Re: Is the water pump bad? Sign In

What was the condition of the coolant before your repairs? Did it have heat before you did your repairs? Are the heater core inlet and outlet hoses hot when the engine is at operating temperature?

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Jun 4, 2016, 8:10 AM)

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jun 4, 2016, 8:26 AM

Post #3 of 3 (670 views)
Re: Is the water pump bad? Sign In

Huh? How can you have less pressure in one hose than another unless wildly revving it up they are all the same. Of course it's cooler on the bottom - that's what a radiator does is cool hot coolant.

Add to questions by DS above: You may not be really full of coolant at all. Feel inlet and outlet hose of heater for the same temp or real close hot to touch - careful. Liquid coolant will not lose that much heat in a heater just some but if air in it would be cold coming out strongly suggests either clogged or air/vapor in system for any reason,


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