Go Back   LS1TECH > CHASSIS, SUSPENSION, APPEARANCE > General Maintenance & Repairs
Sign in using an external account
Register Forgot Password?
Search

General Maintenance & Repairs
Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by
Gearstar Performance Transmissions

engine shakes just above

Reply
 
Thread Tools Search this Thread
Old 01-16-2010, 03:11 PM   #1
TECH Regular
 
Trader Rating: 0
Join Date: Jan 2004
Location: GARDEN GROVE, CA
Posts: 496
Default engine shakes just above

Idle to about 2k rpm then it's smooth.
__________________
02 Z28, thrown rod. No ride for 14 months.
Salvaged 01 ls1 going in. Lid, powerstick muffler, bbk 85mm throttle body, ported ls6 intake inlet, competition stage 1 clutch, bilstein shocks, lakewood lca's, pro5.0 shifter, rear hose mod
rich Z is offline   Reply With Quote
Old 01-16-2010, 06:12 PM   #2
On The Tree
 
6.0 silverado's Avatar
 
Trader Rating: 2
Join Date: Sep 2009
Posts: 179
Default

Quote:
Originally Posted by rich Z View Post
Idle to about 2k rpm then it's smooth.
Good luck. Took me a good few months to chase down a vibration.
__________________
2001 Camaro SS M6... H/C/I/E. Spray waiting in the garage. Tick built trans, MWC built rear.
2009 Mercury Mariner (wifes)... stock as a rock
2005 Dodge Ram 2500 4x4 A4 Cummins... Some extra fuel and some extra air
6.0 silverado is offline   Reply With Quote
Old 01-16-2010, 06:16 PM   #3
TECH Enthusiast
 
Breathing Fire's Avatar
 
Trader Rating: 0
Join Date: Apr 2009
Location: Pocatello Idaho
Posts: 534
Default

Sounds like a weak coil. Sounds like once output increases above 2k rpms it is smoothing out because the coil is catching up.
__________________
99 NBM TransAm M6.
Typhoon 85/85, SLP Lid, SLP 85mm MAF, SLP 25% underdrive, $80 shorty's, MAC ORY, SLP LM2.
UMI 2pt Weld-in SFC's. UMI upper and lower CM adjustable A-Arms. UMI Panhard relocation. UMI adjustable Panhard bar. UMI adjustable CM rear trailing arms. UMI 35mm front bar and 22mm rear bar. Srano's on SLP Bilstein shocks.
Breathing Fire is offline   Reply With Quote
Old 01-17-2010, 01:12 AM   #4
TECH Junkie
 
ae13291's Avatar
 
Trader Rating: 8
Join Date: Jun 2007
Location: san fernando valley, california
Posts: 3,058
Send a message via AIM to ae13291
Default

how bad is the vibration? is it only on idle? mine slightly shakes on the steering wheel at 2k rpms but thats cuz of the poly engine and tranny mounts
__________________
'99 Camaro Z28 M6 SOLD!
ae13291 is offline   Reply With Quote
Old 01-17-2010, 01:51 AM   #5
TECH Regular
 
Trader Rating: 0
Join Date: Jan 2004
Location: GARDEN GROVE, CA
Posts: 496
Default

It's only at idle. The car in general isn't running right. The fuel trims have leaned out some over time and power and mileage have fallen a lot.
__________________
02 Z28, thrown rod. No ride for 14 months.
Salvaged 01 ls1 going in. Lid, powerstick muffler, bbk 85mm throttle body, ported ls6 intake inlet, competition stage 1 clutch, bilstein shocks, lakewood lca's, pro5.0 shifter, rear hose mod
rich Z is offline   Reply With Quote
Old 01-17-2010, 07:31 AM   #6
...with cheese.
 
Armageddon's Avatar
 
Trader Rating: 41
Join Date: Jul 2004
Location: Madison, AL
Posts: 1,856
Default

no codes?
Armageddon is offline   Reply With Quote
Old 01-17-2010, 03:31 PM   #7
TECH Regular
 
Trader Rating: 0
Join Date: Jan 2004
Location: GARDEN GROVE, CA
Posts: 496
Default

No codes and have checked about everything. Cleaned maf, tried another maf, tested tps sensor, checked for vacuum leaks, tried seafoam in the gas, tested fuel pressure, replaced fuel filter. The plugs are showing a little lean the 02 sensors are switching good. They were replaced a couple yrs ago. The exhaust has weird noise at times.
__________________
02 Z28, thrown rod. No ride for 14 months.
Salvaged 01 ls1 going in. Lid, powerstick muffler, bbk 85mm throttle body, ported ls6 intake inlet, competition stage 1 clutch, bilstein shocks, lakewood lca's, pro5.0 shifter, rear hose mod
rich Z is offline   Reply With Quote
Old 01-19-2010, 12:12 PM   #8
TECH Regular
 
gm02ceta's Avatar
 
Trader Rating: 8
Join Date: Nov 2009
Location: The 3rd world of SFV,California
Posts: 404
Default

Did you inspect all your plug wires and their connection to the coils and spark plugs?
__________________
2002 Collector Edition Trans Am
2001 Tahoe LS 4wd 5.3L
2011 Cadillac CTS-V A6 sedan
gm02ceta is offline   Reply With Quote
Old 01-19-2010, 12:12 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply


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 On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 04:30 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details