New LS1 Owners - Newbie Tech Basic Technical Questions & Advice
Sponsored by:
Sponsored by:

strange, help!!!

Thread Tools
 
Search this Thread
 
Old 02-15-2007, 06:08 PM
  #1  
TECH Resident
Thread Starter
iTrader: (4)
 
styoung's Avatar
 
Join Date: Jan 2007
Location: Mass
Posts: 753
Likes: 0
Received 0 Likes on 0 Posts
Default strange, help!!!

i just left to go to the store less than 1/8th mile there and back. when i got out of the store i started my car, a 2002 z28 w/ 49000mi, it started and the rpms droped below 500 and than jumped to 900 and back below 500 and almost stalled. this dosent seem right to me. the car was up to temp also. im just wondering if anyone knows what could of caused this. id like to find out so i can bring it back to the dealer if somethings wrong. thanks in advance.
Old 02-15-2007, 06:33 PM
  #2  
TECH Senior Member
iTrader: (8)
 
staringback05's Avatar
 
Join Date: Apr 2006
Posts: 6,695
Likes: 0
Received 2 Likes on 2 Posts
Default

not throwing any codes?...gimme some info on your car?, and watch it over the next few days see if it does it again
Old 02-15-2007, 06:36 PM
  #3  
TECH Resident
iTrader: (16)
 
NoGamesLS1's Avatar
 
Join Date: Jul 2005
Posts: 800
Likes: 0
Received 0 Likes on 0 Posts

Default

If its jumping around in idle you should check you maf. For over heating make sure that your radiator is full.
Old 02-15-2007, 06:37 PM
  #4  
TECH Resident
Thread Starter
iTrader: (4)
 
styoung's Avatar
 
Join Date: Jan 2007
Location: Mass
Posts: 753
Likes: 0
Received 0 Likes on 0 Posts
Default

there was no check engine light or anything like that. its got a m6 what else would you like to know????
Old 02-15-2007, 06:40 PM
  #5  
TECH Resident
Thread Starter
iTrader: (4)
 
styoung's Avatar
 
Join Date: Jan 2007
Location: Mass
Posts: 753
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by NoGamesLS1
If its jumping around in idle you should check you maf. For over heating make sure that your radiator is full.
its not over heating and sence ive got it it never has. and as far as i know the maf is fine i just installed a slp lid 1 week ago and it looked fine. any other thoughts. thanks to those who have replyed
Old 02-15-2007, 06:48 PM
  #6  
TECH Senior Member
iTrader: (8)
 
staringback05's Avatar
 
Join Date: Apr 2006
Posts: 6,695
Likes: 0
Received 2 Likes on 2 Posts
Default

o2 sensor or sensor in the throttle body
Old 02-15-2007, 06:50 PM
  #7  
TECH Addict
iTrader: (12)
 
02silvaZ's Avatar
 
Join Date: Jun 2006
Location: Jacksonville, FL
Posts: 2,594
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by staringback05
o2 sensor or sensor in the throttle body
+1, maybe a sensor on MAF or T/B is loose
Old 02-15-2007, 08:02 PM
  #8  
TECH Resident
Thread Starter
iTrader: (4)
 
styoung's Avatar
 
Join Date: Jan 2007
Location: Mass
Posts: 753
Likes: 0
Received 0 Likes on 0 Posts
Default

ill chech those tommrrow. thanks, maybe there a little loose???
Old 02-15-2007, 09:57 PM
  #9  
TECH Senior Member
 
JD_AMG's Avatar
 
Join Date: Jan 2004
Location: St.Charles MO
Posts: 5,801
Likes: 0
Received 16 Likes on 15 Posts

Default

Check battery connection, see if there is any corrosion.
Old 02-15-2007, 10:49 PM
  #10  
TECH Resident
iTrader: (16)
 
NoGamesLS1's Avatar
 
Join Date: Jul 2005
Posts: 800
Likes: 0
Received 0 Likes on 0 Posts

Default

If you installed a lid with a reusable filter the oil from the filter will sometimes get on the maf and screw with it
Old 02-15-2007, 11:03 PM
  #11  
TECH Senior Member
iTrader: (8)
 
staringback05's Avatar
 
Join Date: Apr 2006
Posts: 6,695
Likes: 0
Received 2 Likes on 2 Posts
Default

^^^not wrong,...... but damn that was from left field....
Old 02-15-2007, 11:10 PM
  #12  
10 Second Club
iTrader: (3)
 
waterbug1999's Avatar
 
Join Date: Jun 2003
Location: Minnesota
Posts: 4,282
Likes: 0
Received 1 Like on 1 Post

Default

Originally Posted by NoGamesLS1
If you installed a lid with a reusable filter the oil from the filter will sometimes get on the maf and screw with it
Good possibility...
Old 02-15-2007, 11:17 PM
  #13  
TECH Regular
iTrader: (11)
 
rickyracer25's Avatar
 
Join Date: Dec 2005
Posts: 443
Likes: 0
Received 0 Likes on 0 Posts
Default

When you did the lid did you put a fernco (smooth below)... cause if it didn't seal on the TB all the way then you would be getting unmetered air and sometimes that will cause your car to surge like you described...
Old 02-16-2007, 02:58 AM
  #14  
TECH Resident
iTrader: (16)
 
NoGamesLS1's Avatar
 
Join Date: Jul 2005
Posts: 800
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by rickyracer25
When you did the lid did you put a fernco (smooth below)... cause if it didn't seal on the TB all the way then you would be getting unmetered air and sometimes that will cause your car to surge like you described...
This post reminded me that I had the same problem as you a while ago. It was a vacuum leak between the maf and the throttlebody.
Old 02-16-2007, 03:56 PM
  #15  
TECH Resident
Thread Starter
iTrader: (4)
 
styoung's Avatar
 
Join Date: Jan 2007
Location: Mass
Posts: 753
Likes: 0
Received 0 Likes on 0 Posts
Default

thanks for all the good thoughts. i will check tommorrow when its not 0 with the wind chill




All times are GMT -5. The time now is 05:21 PM.