92 Bonneville - bouncy idle and won't go into closed loop - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 10-13-2005, 10:40 PM   #1
Junior Member
Thread Starter
 
Join Date: Oct 2005
Location: Kalamazoo, MI
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
DarrenG is on a distinguished road
Default 92 Bonneville - bouncy idle and won't go into closed loop

Hey, first off, I appreciate anyone willing to help me here. This is my first post on this board, as I don't own the bonnie in question, my gf does. If you have a Jeep or a Diesel, I can help you. But I'm at a loss here. I've searched the forums and google but have found nothing to help yet. Sooo....here we go..

1. Idle bounces between 600 to 1000 at idle. I have replaced the fuel pressure regulator, and the vacuum line (two different size nipples?!), but i don't guarantee there is no vacuum leak.

2. Tranny shifts into 2nd early, it just jumps right in. Hits 3rd too soon as well. Is now starting to hunt for gears on the highway. It locks and unlocks the t.c. in 4th every 20 to 30 seconds.

3. Won't go into open loop, it complains about a faulty o2 circuit. The o2 sensor is brand new. The exhaust smells terrible, rotten egg style, but the cat is new. It is running rich.

What I've replaced:
o2 sensor
spark plugs
throttle position sensor
fuel pressure regulator
2 of the rubber adapters for the vacuum line. The two nipples off the front of the vacuum distribution block
catalytic converter

So, if anyone can offer some advice. What to check, where to look, I'd grealy appreciate it.
DarrenG is offline   Reply With Quote
Old 10-13-2005, 11:16 PM   #2
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

Darren.. click Techinfo at the top of the page and use the procedure to pull your codes.

You mention an O2 code..I'm wondering if theres any others as well. Expect 58? the standard known bug.

During all of this work have you unplugged the battery for 1/2 hour and then reconnected?

Primarily I'm gathering info for the guys with more experience on your year.
BillBoost37 is offline   Reply With Quote
Old 10-14-2005, 01:35 AM   #3
Senior Member
Posts like a Turbo
 
Join Date: Feb 2005
Location: Toronto, Canada
Posts: 363
Thanks: 0
Thanked 0 Times in 0 Posts
Dutch2005 is on a distinguished road
Default

I had a similar problem.............I changed the O2 & MAP sensors and the idle stablized, but I did not have any problems with my tranny, that might be a seperate problem.

Good luck,
Dutch
Dutch2005 is offline   Reply With Quote
Old 10-14-2005, 02:43 AM   #4
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

I'm thinking it might be the MAF sensor? I know it'* a variable for load which tells the trans when to shift.
95naSTA is offline   Reply With Quote
Old 10-14-2005, 03:25 AM   #5
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Mostly guesswork here without a scan, but unless your car is Supercharged, you can forget the MAP sensor. Only supercharged models got one.

My first guess with a wandering idle would be a dirty TB. I suggest pulling it, cleaning it thoroughly with all sensors removed, and reinstalling with a fresh gasket. They typically like their first cleaning (particularly the IAC passage) at 60k miles or so.
willwren is offline   Reply With Quote
Old 10-14-2005, 11:45 AM   #6
Junior Member
Thread Starter
 
Join Date: Oct 2005
Location: Kalamazoo, MI
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
DarrenG is on a distinguished road
Default

The car isn't supercharged, it comes equipped with 182k miles.

The TB gasket was fine when I took it off. The IAC, I think, got a healthy dose of brake cleaner already. Is there a way to check if the mass airflow sensor is bad?

I ran a scan w/ the scan tool, and got the bad o2 circuit message. Last time I ran tried to run the scan the computer wouldn't connect to the scan tool.

Does the vacuum distributor go bad on these cars?

I really appreciate any input & help.
DarrenG is offline   Reply With Quote
Old 10-14-2005, 12:29 PM   #7
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

Brake cleaner??? It'* a throttle body, TB cleaner contains cleaners and lubricants for air only areas. I hope the brake clean didn't wipe out any of the sensors.

There is no vacuum distributor to say. The vacuum rubber fittings and rubber connecting pieces do dry rot and go bad. I've replaced most on my 97 out of necessity.
BillBoost37 is offline   Reply With Quote
Old 10-14-2005, 01:18 PM   #8
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Brake cleaner is absolutely the worst solvent you can use on anything other than brakes. You may have damaged your MAF, O2, IAC, or TPS with it. Even if they were off, the residue may have still been there when the sensors were reinstalled. Use a cleaner labeled as 'intake' or 'sensor safe'. And don't get anything on your MAF sensor other than rubbing alcohol and a q-tip.
willwren is offline   Reply With Quote
Old 10-14-2005, 03:28 PM   #9
Junior Member
Thread Starter
 
Join Date: Oct 2005
Location: Kalamazoo, MI
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
DarrenG is on a distinguished road
Default

well, nothing has gotten any worse since the cleaning so I'm giong to assume little to no damage was done, for now. I've never seen a bottle of 'sensor safe' cleaner. Guess I'll need to look harder.
DarrenG is offline   Reply With Quote
Old 10-14-2005, 04:52 PM   #10
Senior Member
Posts like a Camaro
 
Join Date: Apr 2005
Location: Grand Rapids,MI
Posts: 981
Thanks: 0
Thanked 0 Times in 0 Posts
Masterbm is on a distinguished road
Default

IF you want come into gr sunday. I will be at the meet would be happy to look at with u> I am not is skilled is Willren or billboost. I do have some left hose when I replace my vacum line stuff is cheap thought. I have about 1 foot 1.5 left. Of course they will be others to that I am sure would help look to. I will take it with me and replace what lines look bad. I always have handful of tools in my car at all times
http://www.bonnevilleclub.com/forum/...ic.php?t=41336
Masterbm is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OBD1 Closed Loop Puzzle hastobe Oldsmobile 33 06-03-2013 10:43 AM
1999 Bonneville arm rest won't stay closed DaveyBoy 1992-1999 3 08-01-2010 07:02 PM
1992 3.8 Bonnie dies when switching to "Closed Loop". HELP diskman 1992-1999 13 09-19-2009 04:04 PM
Closed loop PontiacDad General GM Chat 1 03-19-2006 05:44 PM
Exactly what triggers closed loop status? jachin General GM Chat 15 03-12-2005 07:23 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 09:52 PM.


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.