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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.

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Old 01-27-2003, 04:02 PM   #1
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Well i have a 92 bonneville SE and it started to get some hesitation from the start. and when i am driving along sometimes there is a bad hesitation. it got really bad and i checked the spark plugs and they were burnt. i changed them and it made a huge difference. but getting bad again. i am thinking it is the fuel pump or the coils. just wondering what you think it is.
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Old 01-27-2003, 04:15 PM   #2
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Welcome to the Club!

Did you change the plug wires? When was the last time they were changed? This type of hesitation is typical for plugs/wires. Before you mess around with the fuel system, change the wires. I recommend the Taylor 8 mm Spiro Pros. You can get them from Angry Duck Tofu Racing. I got mine from the GP Store before ADTR started carrying them. They are reasonable yet performance oreinted and they come in different colors. ADTR has a link in the links section and Hector (the owner) is a member here.

Good Luck.

BTW, I had the same symptoms until i changed out my plugs and wires. It is amazing what a little maintenance will do for your ride.
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Old 01-31-2003, 02:46 PM   #3
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i changed my plugs and wires when i got it. becuase it was incredible slow when i got the bonnie. and that was only 7 months ago. and then a week ago i changed the plugs, and the problem is happening again already. my dad went and talked to this guy that is really good with cars. he said the O2 sensor. i am changing that today to see.

another question just wondering, my gradma has a 98 SE, why does it have way more acceleration, and should it. i know it will have more but it is alot. i only have 25,000 more miles than her.
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Old 01-31-2003, 03:27 PM   #4
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Ok, you have one of the classic oddballs. 92 was an EGR-less year. And the only one. This may be part of the reason you're frying plugs. I'd pull a couple and inspect them.

Your car came with 170hp stock, and isn't running well. Hers came with 205 hp is probably running well. Even 35 horsepower is EASY to feel. It'* probably more like 50 with your car being sick.

If your plugs are fried again, put any NGK or the OEM Delco plugs in. Stay away from Bosch, especially in the 92. Deathrat can back me up on this, he'* had that experience with the same year. If your plugs are ok, change the fuel filter.

If you're still having problems, get back to us here and we'll take it from there.
Deathrat can make some specific reccommendations for safety precautions with the EGR-less 92, but I'm betting you've already got some burnt exhuast valves. I hope not, but you probably do.
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Old 01-31-2003, 06:39 PM   #5
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My 92 SE 3800 EGRless is not up to top effiency either right now! These engines (First Design year) have a series of related problems associated with them like Burning valves & cracking Exhaust manifolds. If you've changed the spark plugs with some AC Delco'* then you'll be fine. The O2 sensor is also a good place to gain back some lost power (& gas mileage too). Other things to check are the Air Filter & Fuel Filter. These 2 are sometimes forgotten about & will cause loss of power when clogged. Spark plug wires also should be checked for "resistance" & any evidence of "arcing".

As for the difference in acceleration well, One has a Series I 3800 & the other has a Series II 3800. Both will have different Final Drive Ratios too since one is a 4T60-E & the other is a 4T65E-HD!
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Old 02-03-2003, 03:30 PM   #6
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changed O2 sensor and it was great all weekend and this morning i noticed it agiain but barely. and rarely i am checking my plugs today after school. i changed the fuel filter already(since the problem started, did help).

everytime i do something to it it helps alot but keeps getting ad slowly. its starting to **** me off.

now when i put the fan on for heat. it starts the hesitation.

i could only get a ECHLIN O2 from NAPA.
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Old 02-03-2003, 09:23 PM   #7
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bwiensco,

Please describe what your "burnt" plugs look like? Are they black and cruddy or scorched white or tan and melted-looking?
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Old 02-04-2003, 02:15 PM   #8
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Good call, Jr. You think he'* undervoltage? That could explain some ignition problems.
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Old 02-07-2003, 01:20 PM   #9
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the plugs were scroched white and then i checked them yesterday they were fine. but the alternator thing might be a problem. i will check that out thanx alot.
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Old 02-07-2003, 02:22 PM   #10
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ok how do i check the codes on the computer and where are the code numbers.
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