Question about 2002 Chevrolet Impala

3 Answers

2002 Chevy Impala low coolant light is on constantly. Even when car first starts and stays on. After about 10 miles car shows the water gage moving up to overheat. When I turn on the heater siometimes it blows out cold air. It overheated once but did not show any leaks. I have already replaced most of the hoses.

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 4 Answers

I had this same problem with my 2002 3.4L engine impala. Unfortunately, there was a coolant leak at the lower-intake manifold, caused by a cracked gasket. I replaced the gasket, water pump, thermostat, spark plugs and wires and flushed out the heater coil. Didn't find out what it was until after spending 100s on Dex-Cool. I kept refilling it for months until I got a good mechanic to fix the problem whom told me that this is a common repair on older impalas and GM vehicles with 3.4 and 3.1 engines.

Posted on Jul 30, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 80 Answers

This is usually the lower intake manifold gasket. The problem you are describing is due to a large air gap/bubble in your cooling line. This usually happens when the manifold gasket begins to fail.

You can add coolant, and bleed the coolant system (make sure to get out all the air to eliminate the no heat/overheat problem), but unless the lower intake manifold is fixed, it will probably contunue to leak (it can be a very very hard to detect leak). There are UV dyes u can add to the aNTIFREEZE TO CHECK FOR LEAKS THAT AREN'T OBVIOUS. But the worst case for this is that coolant gets in to the oil, and can ruin your engine. Check your dipstick for milky, creamy oil, a sign that there is coolant in the oil. Get it fixed immediately if this is the case, or you will ruin the engine.

There's info online about doing it yourself, but it's a bit invlved if you are not a mechanic. Expect to pay from 800 to 1200 to get it fixed at dealer or mechanic.

Posted on Jun 12, 2009

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 32 Answers

Make sure coolant level is where is suppose to be. take of radiator cap let engine run. might be air bound. if still doing it might have waterpump problems. but it sounds like air in system.

Posted on Aug 09, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Replacing water pump on 2001 chevy impala


That is good bet but you should see some spotting from coolant under the car. There is a weep hole on the water pump and what happens with age is that the bushing in the pump on the shaft gets worn and coolant starts to drip out.

Feb 10, 2014 | 2001 Chevrolet Impala

1 Answer

What does it mean the check gages light comes on in a chevy trailbrazer 2002


Hello: It means to look at the gages, Low oil pressure, high coolant temp, low fuel, low voltage. Basically to get your attention to check the gages.

Jul 22, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

Faulty warning light


You will see a switch with a wiring connector plugged into the radiators side tank at the right side. That is the low coolant switch

Apr 03, 2010 | 2000 Chevrolet Impala

2 Answers

2003 impala temp. gage goes high & low and no heat comes out of heater. it continues to cycle like this as I drive. When temp. gage goes up the heater quites.


Have u checked the coolant level? this type of problem useualy indicates the coolant is low, if it is low you need to have the engine cooling system tested for a leak, the coolant goes out somewhere.

Jan 29, 2010 | 2003 Chevrolet Impala

2 Answers

In my chevy impala i have no hot air comming out of the vents. The temperture gage reads at about half and then will fluctuate. What could be the problem?


Check your coolant level. When the level goes down, the heater is usually the first unit to show the lack of coolant (no heat). As the coolant decreases, eventually the temperature sensor is intermittently 'out of the water' and can't indicate water temperature, causing the fluctuation. If your coolant is low, find and repair the leak.

Jan 27, 2010 | 2003 Chevrolet Impala

1 Answer

What is the check gauges light


CHECK GAGES light (1) indicates a potential engine failure(low oil pressure, low coolant, coolant overheating) has occurred.
· Check gages and shut down engine. Gages should read as follows: Oil pressure 5 to 10 psi (34 to 69 kPa) at idle; Water Temp gage below 230 degrees (110 C).
· Check engine oil level (Para 2-11) if OIL PRESS gage indicates low reading. Check coolant level (Para 2-11) if Water Temp gage indicates high reading. Notify Unit Maintenance if levels are low.

If CHECK ENGINE light (2) is on, check engine oil pressure gage (3) and water temperature gage (4). If both indicate normal, proceed with mission and then notify Unit Maintenance. If either one does not indicate normal, stop engine immediately and notify Unit Maintenance


Oct 16, 2009 | 1999 GMC Jimmy

Not finding what you are looking for?
2002 Chevrolet Impala Logo

3,179 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75051 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7726 Answers

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

Answer questions

Manuals & User Guides

Loading...