Timing Advance!!!!>???? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-02-2004, 02:52 AM   #1
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jan 2003
Posts: 1,250
Thanks: 0
Thanked 0 Times in 0 Posts
bmsgaffer86 is on a distinguished road
Default Timing Advance!!!!>????

Ok i was reading my monitor program
and the last few days my average spark advance was like 40* !!! Is that considered a bad thing... at WOT it went down a little but still stayed around the 20-30* mark
bmsgaffer86 is offline   Reply With Quote
Old 01-02-2004, 04:12 AM   #2
Senior Member
True Car Nut
 
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Thanks: 0
Thanked 0 Times in 0 Posts
TrueWildMan is on a distinguished road
Default

That is quite a bit of advance...notice any undetected pinging or detonation??
TrueWildMan is offline   Reply With Quote
Old 01-02-2004, 01:13 PM   #3
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jan 2003
Posts: 1,250
Thanks: 0
Thanked 0 Times in 0 Posts
bmsgaffer86 is on a distinguished road
Default

Nope i cant seem to hear anything wrong. My car runs excelent minus some lower engine knocking (sound like something rubber hiting something metal) that gets worse as the engine and trans warm up and is only noticable at idle.....
bmsgaffer86 is offline   Reply With Quote
Old 01-03-2004, 01:07 AM   #4
Senior Member
Posts like a Turbo
 
Join Date: May 2003
Location: San Diego, CA
Posts: 203
Thanks: 0
Thanked 0 Times in 0 Posts
grey3800 is on a distinguished road
Default

Quote:
Originally Posted by bmsgaffer86
Nope i cant seem to hear anything wrong. My car runs excelent minus some lower engine knocking (sound like something rubber hiting something metal) that gets worse as the engine and trans warm up and is only noticable at idle.....
i doubt this is the case but ill say it anyways, rubber hitting metal is exactly what my broken harmonic balancer sounded like at idle. wounldnt hurt to have a look-see
grey3800 is offline   Reply With Quote
Old 01-03-2004, 01:09 AM   #5
Senior Member
True Car Nut
 
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Thanks: 0
Thanked 0 Times in 0 Posts
TrueWildMan is on a distinguished road
Default

Quote:
Originally Posted by grey3800
Quote:
Originally Posted by bmsgaffer86
Nope i cant seem to hear anything wrong. My car runs excelent minus some lower engine knocking (sound like something rubber hiting something metal) that gets worse as the engine and trans warm up and is only noticable at idle.....
i doubt this is the case but ill say it anyways, rubber hitting metal is exactly what my broken harmonic balancer sounded like at idle. wounldnt hurt to have a look-see
Actually that sounds about right. There'* rubber around the harmonic balancer.
TrueWildMan is offline   Reply With Quote
Old 01-03-2004, 01:32 AM   #6
Member
Posts like a V-Tak
 
Join Date: Dec 2003
Location: round lake beach illinois
Posts: 38
Thanks: 0
Thanked 0 Times in 0 Posts
superman013 is on a distinguished road
Default thats definately it

i though it was my supercharger, so i changed it. $1500 dollars later. i found out it was my harmonic balancer. but needed a new sc anyways. look for a small ripp or tear mark around the outer part of the puley. if this is the problem, make sure to change the crank sensor also. the rubbing metal noise could mean the pulley is shifting hitting the sensor. Need instructions, let me know.
superman013 is offline   Reply With Quote
Old 01-03-2004, 01:37 AM   #7
Senior Member
Posts like a Turbo
 
Join Date: May 2003
Location: San Diego, CA
Posts: 203
Thanks: 0
Thanked 0 Times in 0 Posts
grey3800 is on a distinguished road
Default

Quote:
Originally Posted by TrueWildMan
Quote:
Originally Posted by grey3800
Quote:
Originally Posted by bmsgaffer86
Nope i cant seem to hear anything wrong. My car runs excelent minus some lower engine knocking (sound like something rubber hiting something metal) that gets worse as the engine and trans warm up and is only noticable at idle.....
i doubt this is the case but ill say it anyways, rubber hitting metal is exactly what my broken harmonic balancer sounded like at idle. wounldnt hurt to have a look-see
Actually that sounds about right. There'* rubber around the harmonic balancer.
On a lighter note, the way i discovered it was the harmonic balancer making the noise was i asked my dad to "show me how strong he was by turning the crank" (the serpintine was off at the time and we were spinning the pullies and using a mechanics stethiscope) and he put his hands down to the crank and BOOM! he could turn the balancer and the crank remained stationary.
grey3800 is offline   Reply With Quote
Old 01-03-2004, 02:21 AM   #8
Senior Member
Posts like a Corvette
Thread Starter
 
Join Date: Jan 2003
Posts: 1,250
Thanks: 0
Thanked 0 Times in 0 Posts
bmsgaffer86 is on a distinguished road
Default

Yes... I would really like to fix this.. If you could post a quick summary of the process (ichiltons will help me the rest of the way) and how much its ooking to get a new one would be GREAT...!!! thanks for the help!
~B
bmsgaffer86 is offline   Reply With Quote
Old 01-03-2004, 01:33 PM   #9
Senior Member
True Car Nut
 
Join Date: Sep 2002
Posts: 3,392
Thanks: 0
Thanked 0 Times in 0 Posts
fuddyduddy121 is on a distinguished road
Default

Right, if you can turn the pulleys by hand back and forth when the engine is off, then your harmonic balancer is probably shot.

http://www.bonnevilleclub.com/forum/...pic.php?t=7890
fuddyduddy121 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Lack of Timing Advance...Lots of KR...Slow - UPDATE 9-9-07 Hans 2000-2005 23 09-11-2007 01:14 AM
-15 to -35 Timing Advance WTF?! dillcc Performance, Brainstorming & Tuning 17 10-23-2006 06:13 AM
max timing advance at WOT maybe2fast 1987-1991 5 02-09-2006 04:55 PM
96+ L36 equipped cars, stock timing advance @ WOT? 95naSTA 1992-1999 0 09-15-2005 11:35 PM
Timing Advance do anything? Allmachtige 1992-1999 4 10-20-2002 04:16 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:56 AM.


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.