Go Back  Scionlife.com > Scion tC First Gen > Scion tC 1G Owners Lounge > Scion tC 1G Drivetrain & Power
Reload this Page >

2008 2AZ-FE rougher, throatier idle; and growl on heavy accel out of sharp turn

Notices
Scion tC 1G Drivetrain & Power Engine and transmission discussions...

2008 2AZ-FE rougher, throatier idle; and growl on heavy accel out of sharp turn

Old 07-05-2015, 11:44 PM
  #1  
Senior Member
5 Year Member
SL Member
Thread Starter
 
Join Date: Mar 2010
Posts: 116
Default 2008 2AZ-FE rougher, throatier idle; and growl on heavy accel out of sharp turn

I have a MT Scion TC.

Key detail on the heavy acceleration out of sharp turn is this usually only happens when I've been engine braking into the turn, and not every time. I'm not certain on the rougher/throatier idle, but I do think it's there.

AFR is fine and so far I'm not throwing any codes.

I have not yet done any engine valve clearance. There is no actual shimming on this engine, just swapping out lifters.

What else could this be? Timing chain? I do drive this car very hard. 130k miles. What kind of shop should I take it to to have look at it?

I can inspect muffler, but don't think I'm going to find any holes. On second though, perhaps one of the connections is a bit loose? Eh, the growl goes away soon as I let off on the throttle, and doesn't return, even if I step on it again immediately.
rancur3p1c is offline  
Old 07-12-2015, 07:59 PM
  #2  
Senior Member
10 Year Member
5 Year Member
SL Member

 
Join Date: Jul 2004
Location: Michigan
Posts: 3,900
Default

do you have a CAI (cold air intake)? Check all the connections for the air intake tube. Also when is the last time you replaced your spark plugs? I had denso brand in mine that made it growl and rough idle, replaced them with NGK's and no more issue.. (part 4589, laser iridium). Also when's the last time you cleaned your MAF sensor? Throttle body?
sciontc_mich is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
stillcole
Scion tC 2G ICE & Interior
6
06-14-2015 09:19 PM
Marvelicious
Scion tC 1G Drivetrain & Power
8
05-01-2015 08:00 PM
setpol
Scion tC 1G Owners Lounge
0
02-17-2015 11:33 PM
carid
Exclusive Sponsored Sales
0
01-08-2015 11:33 AM
cid_mcdp
Maintenance & Car Care
4
01-05-2015 02:45 PM


Thread Tools
Search this Thread
Quick Reply: 2008 2AZ-FE rougher, throatier idle; and growl on heavy accel out of sharp turn


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.