Question about 2001 Chevrolet Blazer

1 Answer

Blazer running hot. Antifreeze level low cause of leak somewhere. Antifreeze is showing up on top of motor. Seems like pump needs replacing, but coul dbe another problem. How do I tell?

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 218 Answers

If you are seeing coolant on the top side of your engine, it sounds to me like it may be the intake manifold gasket. Does this have the 4.3L engine? If so, this is a common problem with these engines. If the leak is severe enough, the cooling system will not build up the pressure it needs and this will cause it to run hot. Hope this helps.

Posted on Mar 13, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

2001 Blazer Replaced heater core now water pump is squealing and seems like low circulation

my 98 Blazer I had to replace radiator water pump heatercore and hoses. Had head gasket go. Once that happens air and dexcool corrode cooling system. Do you smell antifreeze? Are you loosing antifreeze? Check oil see if its another color not clear or black but i think light brown. Have you flushed out system?

Jan 31, 2013 | 2001 Chevrolet Blazer

1 Answer

Car is running hot I think it's my water pump .

The most likely causes of a hot running engine are the following:

1. low antifreeze level in the radiator and cooling system.
2. fan not turning on at operating temperature.
3. restrictions in the cooling system such as sediment build up.

Water pumps usually leak when they are bad, and can cause an overheat because of low coolant level.
Check whether the water pump is leaking after topping off the coolant level and running at operating temperature, and then shutting off the car's engine.

Jan 14, 2011 | 1995 Ford Taurus

1 Answer

Hi i have a 94 misubishi exspress van 2.0litre motor i brought it with a blown head gasket i had a mechanis pull head off had it tested and ithe head was no good now replaced with brand new head mechanic...

Yes, it sounds like the water pump or radiator is bad. And the car overheated in the first place, which warped the head on it. It is an aluminum head and if it gets too hot for very long then it will give somewhere. And that is what you bought. Or when the head warped, the engine did to. Or it cracked, and the antifreeze leaked into the cylinder and you leaked antifreeze there and overheated now. But it should have had steam coming out of exaust. Or running bad, missing? Did yoy have the water pump replaced?

Or he could have put the gasket on backwards and it blocked off one or two holes that the antifreeze travels through to cool that head and the intake.

I hope this helps.

Dec 17, 2010 | Mitsubishi Expo Cars & Trucks

1 Answer

Heater blows hot air while car is moving but cold air while idling. The intake manifold was changed last spring, the thermostat has been changed 3 times and the temperature sending unit has been changed....

That sounds like the coolant level is low. If it is not the use of "stop leak" has probably caused a partial clog which restricts the flow of water unless the vehicle is turning higher RPMS. While sitting still raise the RPMS to about 2000 and see if the heater blows hot air to see if the above mentioned problems are fact.

Nov 21, 2010 | 2002 Chevrolet Impala

1 Answer

My Malibu is running hot while still, but when I get going the temperature seems to go back down. I can smell, like a burning antifreeze. Could this be the fan not turning on when standing still?

More likely is you have low coolant levels. If you can smell it, it means it is probably leak somewhere. Check your coolant level. If it is low, I would look under the car for antifreeze somewhere on the engine or engine compartment. Most likely you will just need to replace a loose hose or a hose with a hole in it. It should be an easy and cheap fix.

Oct 21, 2010 | 1999 Chevrolet Malibu

2 Answers

Ford Escape 2003. Engine suddenly overheat.

Engine over heating can be caused by a number of things. When you say the water pump and radiator appear to be ok I am also guessing that you checked the coolant level to make sure it is normal.

If the level is low then you obviously have a leak. Insufficient coolant circulating will not cool the motor properly because it won't be able to draw enough heat out. If the level is normal then you need to check the thermostat to make sure it is opening properly. To do this, run the motor to temperature and check the top and bottom hoses. They should both be hot and firrm once the thermostat opens meaning the circulation loop is operating properly. If the top is hot and firm and the bottom is cold/soft or collapsed then the thermostat isn't opening.

If the thermostat is operating properly then you ned to look for some other obstruction or cause for coolant loss. Check the head/intake gaskets, hose connections, hoses, over flow tank, radiator fins, radiator side tanks etc..

Good luck.

Jun 10, 2010 | 2003 Ford Escape

1 Answer

I have a 2003 Dodge stratus (2.4L), the car runs fine in the mornings, but later in the day, I'm smelling oil and the car idles rough and jerks, has cut off a couple of times, but after engine cools off,...

Your cooking the oil in the engine ( getting to hot/possible oil leak on top of engine). Check the front of the radiator for anything that will cause air not pass through the radiator.If you find any bugs/trash/or a build-up dust or dirt clean it out. Next check to see if the radiator and coolant recovery jug has any antifreeze in it. If not refill each to proper levels with a 50/50 mix antifreeze. Then if all is good run the car in the morning and as it is worming up put your hand on the upper radiator hose to feel if it is hot or cold. If the hose is hot and you can feel the antifreeze moving through the hose then the pump is working correctly. If not and the hose feels luke warm with no movement of fluid then the thermostat is stuck closed and will need to be replaced. Also you need to replace the engine coolant temperature sensor (ect) on engine. Hope this will help you.

May 26, 2010 | 2003 Dodge Stratus

1 Answer

Won't blow out heat while sitting still, but will generate heat while riding along

Most likely causes of this is either low coolant level or a plugged heater core, of which, I'd lean towards the low coolant. Rarer causes would be a slipping drive belt for your water pump, or a dying water pump.

Check the coolant level in the coolant bottle and top off with a 50/50 mixture of antifreeze and water if it is low. There should be markings on the side of the bottle to let you know the proper level; markings for both a cold engine and a hot engine.

If the level is low, you might want to have the vehicle checked to make sure that there isn't a leak somewhere.

Jan 07, 2010 | 2003 Chrysler Town & Country

3 Answers

My truck was running hot and when i put my heater on it was blowing cold air then it got hot and then cold

more than likely with those symptoms you are low in coolant, you have sticking thermastat, a bad radiator cap not alowing the system to pressurise, or the worse case senerio is a blown head gasket. hope this helped

Oct 17, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Antifreeze leaking and noisy belt

when you replace anti freeze you should check and tighten all clips etc as the anti freeze is thinner

Nov 23, 2008 | 1992 Oldsmobile Ninety Eight Regency

Not finding what you are looking for?
2001 Chevrolet Blazer Logo

Related Topics:

292 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

78257 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides