2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Problems with start and idle.

Thread Tools
 
Search this Thread
 
Old 01-27-2008, 01:27 AM
  #1  
Junior Member
Thread Starter
 
Raintrain34's Avatar
 
Join Date: Jan 2008
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Raintrain34 is on a distinguished road
Default Problems with start and idle.

My car has just over 80,000 miles on it. Just recently, when I would start it, the RPMs would drop to about 200 then go up to 1300, then back down to 400 then up 1100, then it would settle in at a regular idle of 800-900 rpm. Or, it would be difficult to start. Even more recently, on one occassion, the rpm'* dropped while waiting at a stop light. Can someone help me out with this? My friend has been telling me to come to this site for years, so I figured I'd finally give it a shot.
Old 01-27-2008, 10:45 AM
  #2  
jdq
Senior Member
Posts like a Corvette
 
jdq's Avatar
 
Join Date: Nov 2005
Location: Hamilton, Ontario , Canada
Posts: 1,201
Likes: 0
Received 0 Likes on 0 Posts
jdq is on a distinguished road
Default

Is your SES light on to retrieve a code.My car would stall if it went below 400rpm.Could be vacuum leak.When was last time you changed plugs and wires.Also could try cleaning IAC and throttle body and EGR.When mine did this it was the maf sensor but it would pull a code.
Old 01-27-2008, 07:07 PM
  #3  
Senior Member
True Car Nut
 
PontiacDad's Avatar
 
Join Date: Jun 2003
Location: Purgatory
Posts: 6,313
Likes: 0
Received 0 Likes on 0 Posts
PontiacDad is on a distinguished road
Default

When was your last tune up including plugs?
Could be a vacum leak from the stalling?
As stated is there a service engine soon light on?
Old 01-27-2008, 07:34 PM
  #4  
Senior Member
Certified GM nut
 
SSEBONNE4EVA's Avatar
 
Join Date: Feb 2004
Location: CT
Posts: 2,099
Likes: 0
Received 1 Like on 1 Post
SSEBONNE4EVA is on a distinguished road
Default idle

There are many causes of you problem some of which include, vacuum leaks, water in the fuel, a faulty TPS, for starters. Clogged injectors are also possible.

get it scanned for codes and see if anything comes up.
Old 01-27-2008, 10:16 PM
  #5  
Senior Member
Certified GM nut
 
GXP_Vince's Avatar
 
Join Date: Mar 2007
Location: Yuma, AZ.
Posts: 1,937
Likes: 0
Received 0 Likes on 0 Posts
GXP_Vince is on a distinguished road
Default

We will hit it up this week Matt and check it out.
Old 01-28-2008, 05:03 AM
  #6  
Junior Member
Thread Starter
 
Raintrain34's Avatar
 
Join Date: Jan 2008
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Raintrain34 is on a distinguished road
Default Thanks

Just wanted to say thanks to everyone for the quick response. We'll run through the suggestions and figure it out...FYI, no service engine light came on...scanned it anyway because a scanner was nearby...thanks.
Old 01-28-2008, 09:32 AM
  #7  
Senior Member
True Car Nut
 
PontiacDad's Avatar
 
Join Date: Jun 2003
Location: Purgatory
Posts: 6,313
Likes: 0
Received 0 Likes on 0 Posts
PontiacDad is on a distinguished road
Default

Things like Maf, cam sensor, crank sensor will usually throw a code.
Vacum leak or minor mis fires, water in fuel, no code unless you leave it to long.
Old 02-04-2008, 05:16 PM
  #8  
Senior Member
Certified GM nut
 
GXP_Vince's Avatar
 
Join Date: Mar 2007
Location: Yuma, AZ.
Posts: 1,937
Likes: 0
Received 0 Likes on 0 Posts
GXP_Vince is on a distinguished road
Default

So we did basic things for about an hour one night. We cleaned the TB somewhat, we seafoamed it, and change his air filter not really much more didnt help either but needed to be done nonetheless, this weekend I am taking the 95 sc "SE" and his 01 SE to the shop on base so we can work on Them. We will be doing the basic tune-up stuff to his(he has dex cool in it also) and doing alot on my 95 to get it rolling better. BTW started back up without a problem last night after 2 months of sitting.
Old 02-07-2008, 04:54 PM
  #9  
Senior Member
Certified GM nut
 
GXP_Vince's Avatar
 
Join Date: Mar 2007
Location: Yuma, AZ.
Posts: 1,937
Likes: 0
Received 0 Likes on 0 Posts
GXP_Vince is on a distinguished road
Default

Okay so his Service engine soon light came on scanned it and it said engine was running to lean. Where do we start?

o2sensor?
Old 02-07-2008, 06:25 PM
  #10  
Senior Member
Posts like a Northstar
 
slick94prix's Avatar
 
Join Date: Mar 2007
Location: Maumee, OH
Posts: 529
Likes: 0
Received 0 Likes on 0 Posts
slick94prix is on a distinguished road
Default

O2 would be a good culprit, but generally would say a bank is too lean. Knowing the bank may give you a better idea as to which O2 to replace.


Quick Reply: Problems with start and idle.



All times are GMT -4. The time now is 09:18 AM.