Hesitation - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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.

Reply
 
 
 
Thread Tools Search this Thread
Old 12-11-2009, 11:51 AM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
michael69 is on a distinguished road
Default Hesitation

My 2000 Bonneville SSEI hesitates at around 1500 to 1700 rpms, no matter what the speed. can anyone help with this. i have tried cleaning the fuel system, to no avail. it helps a bit then does it again.
michael69 is offline   Reply With Quote
Old 12-11-2009, 05:25 PM   #2
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

Get your DTC'* (diagnostic trouble codes) pulled. If you don't have access to a code scanner, Autozone will do it for free. You may have a misfire, which would lead to plugs, wires and coils as a start. Did you change the fuel filter. Could also be a fuel pump issue, but the first step is to pull codes.

Let us know what codes show up.
2kg4u is offline   Reply With Quote
Old 12-11-2009, 06:01 PM   #3
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
michael69 is on a distinguished road
Default

I changed the filter, cleaned the fuel injection system. it has been doing this off and on for about 5 years. my scanner doesn't pick up any codes, but i'll have them do it at autozone. i think it might be my fuel pressure regulator. i had to have a coil replace but this is different. it seems to not be getting any fuel. thanks for the assist.
michael69 is offline   Reply With Quote
Old 12-11-2009, 08:35 PM   #4
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

Quote:
Originally Posted by michael69 View Post
I changed the filter, cleaned the fuel injection system. it has been doing this off and on for about 5 years. my scanner doesn't pick up any codes, but i'll have them do it at autozone. i think it might be my fuel pressure regulator. i had to have a coil replace but this is different. it seems to not be getting any fuel. thanks for the assist.
Do a pressure check on the fuel system. You should be between 48-55 lbs.
Purplehazeir is offline   Reply With Quote
Old 12-14-2009, 09:29 AM   #5
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
michael69 is on a distinguished road
Default

I'll give that a try.
michael69 is offline   Reply With Quote
Old 12-14-2009, 09:48 AM   #6
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

In reality though, I've yet to see one register 48-55psi. I usually find the 00+'* at about 40 and with a new pressure regulator about 44psi.

I doubt you are having a fueling issue at 1500-1700 rpm. When was the last time you changed the plugs and wires, checked the coils for any corrosion on the tower posts?

Usually a stumble at this rpm is high load low rpm based. aka ignition.
BillBoost37 is offline   Reply With Quote
Old 12-14-2009, 11:00 AM   #7
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
michael69 is on a distinguished road
Default

the wires are original, and i had 1 coil replaced. I'll check them.
michael69 is offline   Reply With Quote
Old 12-14-2009, 11:16 AM   #8
Senior Member
Posts like a Northstar
 
Nobotada84's Avatar
 
Join Date: Apr 2009
Location: Indianapolis, Indiana
Posts: 699
Thanks: 0
Thanked 0 Times in 0 Posts
Nobotada84 is on a distinguished road
Default

I second the suggestion to check coils, wires and plugs. Also are u using premium fuel?
Nobotada84 is offline   Reply With Quote
Old 12-14-2009, 11:27 AM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

About how many miles on the wires and ... plugs?
BillBoost37 is offline   Reply With Quote
Old 12-14-2009, 01:28 PM   #10
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Dec 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
michael69 is on a distinguished road
Default

175k on the wires, 75k on the plugs.
michael69 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Hesitation while turning dguff 1992-1999 19 12-21-2006 08:42 AM
Engine Hesitation at 4000 rpm when not in gear StoopidSavant 1992-1999 7 12-29-2002 10:29 PM
surging, hesitation only when cold oldfrt46 1992-1999 6 11-07-2002 04:25 PM
Is this the hesitation everyone talks about?? Daron97SSE 1992-1999 5 10-04-2002 10:49 PM
hesitation from 3rd to 4th gear ?? Drifter420 1992-1999 10 08-14-2002 08:24 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 05:44 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.