1987 Bonnie LE misfire

Parley with regards to your 1987 to 1991 Bonneville, Olds 88, Olds 98 86-90 or Buick Le Sabre, Le Sabre T-Type and Park Avenue 85-90 . Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
Post Reply
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

1987 Bonnie LE misfire

Post by Djkthegame »

i just picked up and 87 LE this week with only 74k original miles, it was running rough at first so i changed what i could afford after all the fee's and insurance.
I replaced the air filter (old one was black lol) changed all the plugs and put it autolite 605's gapped to .045 which is what is says under the hood, put on napa belden 8mm wires (the blue ones), and changed the fuel filter. It made a dramatic difference, i can feel that the pick up is alot faster than it was. it is running a hell of alot better, but it still has a slight misfire and its burning more gas than my 2000 SSEi i am going to replace the coil pack next when i get paid. any advice on where i can search next and a recommended brand of coil pack for that year?
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
00Beast
Retired Site Developer
Retired Site Developer
Posts: 20960
Joined: Tue May 27, 2008 10:30 pm
Year and Trim: '17 Silverado 1500
Location: MN/IA
Contact:

Re: 1987 Bonnie LE misfire

Post by 00Beast »

Go to a junkyard and get the ignition control module (what the coils bolt to) and coils from a Series I or II v6 car, I don't believe it matters which car it is from. This is a direct bolt in and has hotter spark and more accurate ignition, IIRC. If it is indeed your coil, it will fix that issue, as well as slightly improving throttle response and power from stock.
Bye Bye:
Image
RIP sandrock
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
User avatar
Mechanical Mike
Retired Gearhead
Retired Gearhead
Posts: 3606
Joined: Tue May 20, 2008 4:34 pm
Year and Trim: 99 SSEi
Location: Buffalo New York

Re: 1987 Bonnie LE misfire

Post by Mechanical Mike »

You'll also need the mounting plate. viewtopic.php?f=44&t=1684

I have everything you need, send me a PM if you're interested.
2006 Chevy Monte Carlo SS
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

i got one from a 94 buick with the tuned port 3800 with the 8th vin "L" but the connector from the old magnavox module dont quite fit, some of the ribs are in the way, is this actually going to work when i install it?
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

my old coil pack is mounted above the firewall side valve cover does this matter?
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
00Beast
Retired Site Developer
Retired Site Developer
Posts: 20960
Joined: Tue May 27, 2008 10:30 pm
Year and Trim: '17 Silverado 1500
Location: MN/IA
Contact:

Re: 1987 Bonnie LE misfire

Post by 00Beast »

Can you get some pictures of everything you have?
Bye Bye:
Image
RIP sandrock
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

i dont have a camera unfortunately, that why i dont have pic in my signature lol. im just finishing eating some mc donalds and then im going to finish the install...
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

i got it wired up... no start
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
myfirstbonnie
Resident Gearhead
Resident Gearhead
Posts: 5530
Joined: Mon May 19, 2008 10:19 pm
Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS
Location: Hillsboro, Oregon

Re: 1987 Bonnie LE misfire

Post by myfirstbonnie »

Are you sure you got an ignition module from a 3800? The coils are all the same connection wise, but the modules are different. Look at the pins. The 3800 uses all of them and the 3100 does not use the space on the far left of the connector (it will have a hole in the rubber insulator and no pin if it is from a 3100).

I know this because I have one from a 3100 sitting here in my garage that I got when I did my swap.
00Beast
Retired Site Developer
Retired Site Developer
Posts: 20960
Joined: Tue May 27, 2008 10:30 pm
Year and Trim: '17 Silverado 1500
Location: MN/IA
Contact:

Re: 1987 Bonnie LE misfire

Post by 00Beast »

Talking in chat, Don thinks he needs a 3300 ICM.
Bye Bye:
Image
RIP sandrock
Sirius wrote:Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

im going back to the junkyard tomorrow to get a 3300 module, and well see if that does it
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
User avatar
spidey3479
Posts like an L27
Posts like an L27
Posts: 673
Joined: Thu May 22, 2008 3:20 am
Year and Trim: 2001 SSEI, 2004 SLE
Location: Lancaster, SC

Re: 1987 Bonnie LE misfire

Post by spidey3479 »

IIRC this was an easy swap on my 88 SSE. Is there a difference in that one year?
1988 SSE-Gone but not forgotten.
2001 SSEI-304,572 miles, 3.5 Pulley, Intense PCM, Intense FWI Spectre filter, 160 tstat, ngk iridiums, belden wires, Silverstars-high and low beam, rebuilt tranny, shift kit, cooler, Dex VI fluid, replace the rear compressor and lines and level sensor, Monroe air shocks in back, FE5 struts and Moog strut mounts, Moog stabilizer bars, AC\Delco control arms.

2004 SLE-Stock, 195,000 miles,oldest son's baby now

2000 Ford Ranger-Stock, 352,000 hard, pizza delivery miles, new control arms (upper and lower), new(used) tranny
Jrs3800
Retired Admin/Techinfo Admin
Retired Admin/Techinfo Admin
Posts: 26009
Joined: Mon May 19, 2008 2:08 pm
Year and Trim: 03 SLE, 95 SE, 95 TS SE
Location: Space Coast, or at least it used to be

Re: 1987 Bonnie LE misfire

Post by Jrs3800 »

Yes there is a difference :wink:
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

i went back today i got the module out of a 90 buick century 3300, i had to switch the position of the 1/4 and 6/3 coils and i started right up.. no more misfire!!!
ISSUE RESOLVED THANKS TO JRS3800 YOU ARE THE MAN!!!!!
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
myfirstbonnie
Resident Gearhead
Resident Gearhead
Posts: 5530
Joined: Mon May 19, 2008 10:19 pm
Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS
Location: Hillsboro, Oregon

Re: 1987 Bonnie LE misfire

Post by myfirstbonnie »

We have been saying that for years. Glad you got it up and running.

Now............................how about some pictures posted in your rides area.
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

no camera :sad:
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
User avatar
spidey3479
Posts like an L27
Posts like an L27
Posts: 673
Joined: Thu May 22, 2008 3:20 am
Year and Trim: 2001 SSEI, 2004 SLE
Location: Lancaster, SC

Re: 1987 Bonnie LE misfire

Post by spidey3479 »

Yay for you!!! Yes, Don is the man.
1988 SSE-Gone but not forgotten.
2001 SSEI-304,572 miles, 3.5 Pulley, Intense PCM, Intense FWI Spectre filter, 160 tstat, ngk iridiums, belden wires, Silverstars-high and low beam, rebuilt tranny, shift kit, cooler, Dex VI fluid, replace the rear compressor and lines and level sensor, Monroe air shocks in back, FE5 struts and Moog strut mounts, Moog stabilizer bars, AC\Delco control arms.

2004 SLE-Stock, 195,000 miles,oldest son's baby now

2000 Ford Ranger-Stock, 352,000 hard, pizza delivery miles, new control arms (upper and lower), new(used) tranny
Djkthegame
GXP Member
GXP Member
Posts: 248
Joined: Tue Jun 01, 2010 10:41 am
Year and Trim: 2000 Bonneville SSEi
1987 Bonneville LE
Location: Lockport, IL

Re: 1987 Bonnie LE misfire

Post by Djkthegame »

Oh no, the misfire is back. i grounded the diagnostic terminal and got a code 12 which means no stored codes lol... so im not sure where to go from here?
"CERTIFIED BONNIEHOLIC"
B I-1999 Bonneville SE -My First Bonnie- gone forever
B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
B III-1987 Bonneville LE (burgundy) 7/22/10 -- Gone to Heaven
B IV-1991 Bonneville LE (black) 12/6/12 Parts Car -- Gone!
B V-1998 Bonneville SE (green) 9/11/13 -- 270,000+ and going strong! -- gone 287k+
B VI-1989 Bonneville SSE(gray)9/23/15
Image
Post Reply