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PostPosted: Sat Nov 22, 2008 5:34 am 
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Certified Bonneville Nut
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Joined: Thu May 22, 2008 12:27 am
Posts: 5090
Location: Oklahoma City, OK
Year and Trim: '07 F150 | '13 Acura TL
Well I replaced the plugs and wires, cleaned the TB and all the sensors thoroughly on my 88 le sabre.

It still had a weird miss which happened occasionally. Sudden throttle bursts would cause a put put put, then normal performance. I guess it was more of a delay than anything.

I headed to the junkyard yesterday to find a Series 1 L27 motor in the "dead motor" part of the junkyard. Found a 94 buick park ave and grabbed the ICM mounting plate, ICM and coils. I tested the coils with a multi-meter and 2 read 5.7 and the other was a 5.8. I forget what ohms setting I was on. Either way, good to go. Popped the new ICM and coils on the car and boom, the car is smoother than my SSEi. Its amazing actually.

Moral of the story. If you have any misfire or weird ignition/performance problems with your 88-91 bonnie or whatever car with the 3.8, try popping in the newer Delco style coils and ICM, it cost me $20 for the whole set. Its so easy to convert it to the new system, all you need is the mounting plate, 15 minutes of time, the bolts, ICM, and the coils.


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PostPosted: Sat Nov 22, 2008 10:06 am 
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2007 Fusion SEL
It definitely seems we're lacking the same lot of 87-91s we had..and the ones we do have are mainly owned by people that know everything they need to know...quite unfortunate.

But yes, awesome to be reminded what a simple dump of the magnavox coils can do for a good ole' LN3.

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Now: '11 Ford Fusion SEL | 240hp Gen II VVT Duratec 3.0 V6 | Ingot Silver Metallic | 84k
Now: '07 Ford Fusion SEL | 221hp Gen I VVT Duratec 3.0 V6 | Tungsten Silver Metallic | 113k
Then: '96 Buick Park Avenue Ultra | 240hp Series II L67 | Medium Dark Lichen | 2.93:1 | Bought: JAN 11 @ 135k | Accident: FEB 3 '12 | Crushed: MAR 1 '13 @ 153K
Then: '98 Pontiac Bonneville SSE | 205hp Series II 3800 L36 | Topaz Firemist | 3.05:1 | Bought: NOV '09 @ 74k | Accident: MAY 28 '10 | Crushed: MAR 15 '11 @ 84k
Then: '93 Pontiac Bonneville SE | 170hp Series I 3800 L27 | Dark Yellow Green | 3.06:1 | Bought: JULY '07 @ 92k | Sold: JULY '12 @ 118k
Then: '89 Pontiac Bonneville LE | 165hp Pre-Series I 3800 LN3 | Medium Garnet Red | 2.84:1 | Bought: JAN '05 @ 117k | Sold: SEP 30 '07 @ 152k


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PostPosted: Sat Nov 22, 2008 2:45 pm 
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Retired Admin/Techinfo Admin
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Joined: Mon May 19, 2008 2:08 pm
Posts: 25709
Location: Space Coast, or at least it used to be
Year and Trim: 03 SLE, 95 SE, 95 TS SE
wjcollier07 wrote:
It definitely seems we're lacking the same lot of 87-91s we had..and the ones we do have are mainly owned by people that know everything they need to know...quite unfortunate.

But yes, awesome to be reminded what a simple dump of the magnavox coils can do for a good ole' LN3.



I agree with this... Forgot to tell you guys I had done the swap on the LE.... Nothing like Type II coils and TR55 plugs in an LN3...lol

Yeah Hans those magnavox systems get to be an issue when the years pile up.. I'll take a guess and say the system was Oozing too?


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PostPosted: Sun Nov 23, 2008 4:57 pm 
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Posts like an L27
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Joined: Wed May 21, 2008 10:01 pm
Posts: 670
Location: Pittsburg, KS 6662
Year and Trim: '89 LeSabre T Type
I hate it when the magnavox coils leak out that goo... its such a pain to clean it up. Acetone helps to clean it up though.

On every LN3 that I've owned one of the first things I do is swap in a Delco setup. Its just too easy and it makes the car run a bit better.

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-Eric
"Energy and Persistence Conquer all Things" --Benjamin Franklin
-1989 Buick LeSabre T Type: 220k miles
-1987 Fiero GT: 224k miles
-2012 Honda Civic (boring, but its a good DD)


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PostPosted: Sun Nov 23, 2008 7:08 pm 
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Retired Admin/Techinfo Admin
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Joined: Mon May 19, 2008 2:08 pm
Posts: 25709
Location: Space Coast, or at least it used to be
Year and Trim: 03 SLE, 95 SE, 95 TS SE
Yeah I love the Type II as well... It just looks right at home and clean with the 93 Wires....lol
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PostPosted: Mon Dec 01, 2008 2:15 am 
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Posts like an L27
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Joined: Fri May 30, 2008 2:40 pm
Posts: 639
Location: Des Plaines, IL 60018
Year and Trim: 1988 and 1987 Buick Lesabre T-Type
yea my 4 door Lesabre probably needs this swap but it still runs just misses under throttle and i dont drive it anyway. Its not plated or insured.

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~~~Freddy~~~ Wyotech Graduate, Future RCSAMS student
Pandora 1988 Lesabre T-Type 259000 miles
Darlington 1987 Lesabre T-Type 115000 miles
Cream Puff 1988 Lesabre T-Type 194500 miles
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PostPosted: Wed Dec 03, 2008 9:47 pm 
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Posts like an L67
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Joined: Thu May 22, 2008 12:17 am
Posts: 1257
Location: Winnipeg, Canada
Year and Trim: 2005 Grand Prix GTP CompG
I used to drive an '89 SSE. This was the first mod I did. Prior to the swap the thing would crank for 20 seconds before starting if it were cold or raining out. After the swap it started instantaneously every time. Worked amazingly well.

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2005 Pontiac Grand Prix GTP Competition Group - 43, 000km - L32 3800 - 3.29 Final Gear Ratio - 20% Tint All Around, Machine & Painted Pontiac 17" 10 Spoke Alloys
1996 Pontiac Bonneville SSEi - 203, 000km- L67 3800 - 2.93 Final Gear Ratio - RETIRED
1989 Pontiac Bonneville SSE - 222, 000KM - LN3 3800 - 2.97 Final Gear Ratio - RETIRED


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