Question about 2003 Chevrolet Impala

2 Answers

I have a 2003 Chevy Impala. I ran my car with no oil and now I'm hearing a loud ticking/knocking noise coming from under my valve cover. I added 2 bottles of oil after finding out that I didnt have any and my car sounded and ran just fine. It wasnt until like 2/3 weeks later that I started to hear the ticking/knocking noise. It was quiet and came and went until i drove it once more, now it ticks all the time and its somewhat loud. Can anyone help me please and let me know what you think it may be? Again the noise is coming from right under the valve cover and i havent had an oil change for quite a minute. I dont want to move my car because it sounds like a helicopter going down the street everytime I push on the gas and I dont want to do anymore damage. Thanks!

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 706 Answers

Might be the valves have been damaged running without oil
- or the crankshaft / camshaft / main bearings
most probably you have to let the engine be rebuilt by a mechanic
(expect cost of more than US$ 2.000)
or get another (used) engine at a scrapyard I have a 2003 Chevy - 2003-chevy-wutfveiel3ypko01ydor435x-5-0.jpg

Posted on Dec 06, 2014

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,793 Answers

Try this to see if it makes it better,drain all the oil,replace the filter ,then top up with 20/50 oil,if the noise goes away you have been lucky,if not, its gonna cost ya..... so you can decide what the noise could be,constant "tapping" .....cam followers....."tapping" when engine slows,small ends....."knocking", when engine slows,
big end bearings.(engine revved up/no load.)knocking when accelerating under load NEW engine.......

Posted on Sep 14, 2010

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

2004 chevy impala problems


Assuming the engine oil level is normal, knocking would be lack of oil on the bearings and ticking would be lack of oil for the lifters and valves. I would be checking oil pressure next.

Feb 03, 2014 | Cars & Trucks

1 Answer

Tick in motor with a lot of blowback coming from oil cap has started making a whining noise. not the knock sensor. could it be the oil pump?


The ticking may be coming from the valves, and or, the rocker arms, and or, the lifters. I have a 1996 Chevy Cavalier that has valve train noise and has 230,000 miles on it and is still going. If you are taking the oil cap off when the engine is running, you will see oil spitting out of it, since the engine is lubing the top end. Most vehicles have a pressure gauge on the instrument panel, and or, an oil light, which would show pressure problems. Try to isolate where the ticking is coming from by using a mechanics stethoscope, or a screw driver to your ear. The handle part of the screw driver goes to your ear of course. Place the scope or screw driver blade close to where the tick is coming from and you will hear the ticking get louder the closer you get to it.

Oct 14, 2013 | 2007 Chevrolet Chevrolet Cobalt LS

2 Answers

Motor sounds like a bunch of Indians trying to get out.


sounds to me like you could have damaged the oil pump, running low on oil can cause numerous things to fail.. possibly spun the rod bearings and they are beating on the crank. I wouldn't start it, but if the noise is in the bottom I would drop the oil pan.

Apr 03, 2013 | 1993 Ford Crown Victoria

1 Answer

2003 impala LS making loud ticking noise on cold starts, subsides when warm


yes chevys 3.4 and 3.5 have common lifter noise, have you checked the oil level. I would a better oil ,and I put lucas oil treat in my customers cars after oil changes

Nov 11, 2012 | 2003 Chevrolet Impala

1 Answer

2009 Ford Flex when started first thing on a cold morning it ticks/knocs really really loud, once it warms up the ticking goes away to a very light tick. The dealership ruled out an exhaust manifold leak....


It does sound like a valve lifter problem to me also. It should be covered under warranty. It's a mechanical failure of a component of the drivetrain. Ask them to show you the specific exclusion if they say it's not a warranty problem.Powertrain warranty is 60 months/60,000 miles ( which ever comes first).

Mar 30, 2011 | 2009 Ford Flex

1 Answer

I took the car for repair and they fixed my oil pan valve cover gasket and the oil pan gasket. they put the knock sensor wire direct to the knock sensor since they didnt have a connector. i drove off and...


the knock sensor changes the timing of the motor when it senses knock ,it sounds like the wire may have come off ,it sounds as if when you press the gas the timing should advance and it sounds as if its not advancing thats why you are hearing a clattering noise on accelerating.if you keep driving it like that you can do engine damage

Mar 03, 2011 | Toyota Tercel Cars & Trucks

2 Answers

MAKING NOISE AT CENTER OF TOP ENGINE UNDER MANIFOLD LOUD NOISE


Is it a ticking or knocking noise? or does it sound like something is leaking could be a bad manifold gasket which would be better than a ticking or knocking.

Jul 08, 2009 | 2005 Jaguar XJ-Series

2 Answers

Loud knocking or tapping sound when engine is cold


THIS NOISE IS PISTON SLAP..MOST NEONS HAVE THIS NOISE..HAVE SEEN THEM LAST FOR A LONG TIME..AS LONG AS IT GOES AWAY,IT SHOULD BE FINE

Mar 08, 2009 | 1998 Dodge Neon

3 Answers

Knocking under valve cover on cold starts


Is there any smoke when you first start it? what is happening is the valve seals are probably worn and letting the oil seep past them. when your engine is first started it has no oil or very little oil at the top of the engine, thus causing the knocking noise. could be more but this is a most likely answer. oh and is you haven't changed your oil every 3,000 miles you had beeter start doing it.... answer knocking sounds usually come from bottom of engine try a better quality and correct viscosity oil

Nov 17, 2008 | Hyundai Motor 2002 Elantra

Not finding what you are looking for?
2003 Chevrolet Impala Logo

981 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

74945 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7697 Answers

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

Answer questions

Manuals & User Guides

Loading...