2003 Impala 3.4L 3400 W/159,000 miles has engine chatter.
-
- Posts: 2
- Joined: Fri Apr 05, 2013 10:02 am
2003 Impala 3.4L 3400 W/159,000 miles has engine chatter.
Car has a bad chatter in engine valve train sometimes when driving about 20 miles or more. When car is turned off for about 10 min or morning start up there is no engine chatter. Oil & oil level is good, Engine is not running hot. What could be causing this problem?
Re: 2003 Impala 3.4L 3400 W/159,000 miles has engine chatter
Sounds like you have a very common upper end noise. Pretty much every 3.4 during those years and every variety of that engine, develops a valvetrain noise with normal wear and tear and/or a lot of miles or lack of maintenance. Usually this noise is in the valve lifter area, but sometimes it can come from the rocker arms if they become loose/worn/broken.
This would require the intake manifold and associated parts to be removed if you plan to change the lifters, which is most likely your noise issue. Since it seems to come and go with driving it's probably an oiling issue getting to the lifters (the lifters not staying pumped up), so they would need replaced. Very, very common problem on those engines.
This would require the intake manifold and associated parts to be removed if you plan to change the lifters, which is most likely your noise issue. Since it seems to come and go with driving it's probably an oiling issue getting to the lifters (the lifters not staying pumped up), so they would need replaced. Very, very common problem on those engines.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Posts: 2
- Joined: Fri Apr 05, 2013 10:02 am
Re: 2003 Impala 3.4L 3400 W/159,000 miles has engine chatter
Thanks you for your answer to this problem. That's what I was planning on doing is replacing the hydraulic lifters and checking the rocker arm assembly for any worn or broken parts.
Thank you very much, for your certified ASAE mechanic information .
Thank you very much, for your certified ASAE mechanic information .
-
- Similar Topics
- Replies
- Views
- Last post
-
- 1 Replies
- 16244 Views
-
Last post by carriedi
Sat Sep 16, 2017 2:57 am
-
- 1 Replies
- 567 Views
-
Last post by carriedi
Thu Feb 29, 2024 1:57 am
-
-
New post flaahing check engine light 2004 impala?
by madgam » Sun May 18, 2014 1:46 pm » in Chevy Cars - 3 Replies
- 30571 Views
-
Last post by carriedi
Wed Jan 28, 2015 3:20 am
-
-
-
New post 2007 chevy impala check engine lite? Back again:(
by Lesfry86 » Thu Nov 06, 2014 12:59 pm » in Chevy Cars - 8 Replies
- 56017 Views
-
Last post by carriedi
Fri Jul 17, 2015 11:15 pm
-
-
- 7 Replies
- 9770 Views
-
Last post by carriedi
Thu Aug 07, 2014 10:54 pm