Sputtering a little…. 45-60MPH - Page 2 - 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.

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Old 01-18-2006, 02:29 PM   #11
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cool thanks guys for the info/help, im going to try the plugs and wires and if that doesn't work ill try some of the other things.


I love this place, everyone is for friendly and helpfull.
makes me glade i got a Bonneville
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Old 01-18-2006, 02:59 PM   #12
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BTW... being new to the forum..

The club found that Bosch plugs and wires do not last long and do not help our cars run good at all.

Don't know why...they just don't.

Recommened brands are:
NGK plugs
AC Delco Plugs
AC Delco Wires
Napa Belden Wires..

All good stuff.
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Old 01-18-2006, 03:11 PM   #13
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cool thanks.

i was going to get Bosch plugs and wires too, but now i wont.

i just get AC delco.

Any diffence in what size 7.5mm, 8mm, 8.8mm???
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Old 01-18-2006, 03:54 PM   #14
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NGK or AC Delco plugs (they're the same).

Try Belden wires at NAPA. Cheaper than OEM and at least as good.

Wire diameter will make no difference for you.
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Old 02-01-2006, 10:43 PM   #15
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UPDATE***

affter changeing the wires and plugs it is still doing it.

What else could it be?

Im thinking maybe O2 Sensor? or maybe some other ignition part?
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Old 02-01-2006, 10:47 PM   #16
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Quote:
Originally Posted by bandit
UPDATE***

affter changeing the wires and plugs it is still doing it.

What else could it be?

Im thinking maybe O2 Sensor? or maybe some other ignition part?
I have a similar car to you, same engine transmission, and year and have a similar type of problem with a studder/shaking/etc at low RPM when the TC is locked or supposed to be locked.

So far I have done:

replaced Plugs, many differetn kinds
repalced wires, 2 different kinds
replaced maf
replaced tps
replaced coils even tho they were the same resistance before and after
cleaned throttle body
replaced o2 sensor
replace CAT with magnaflow
replaced all tires, balanced at multiple shops

after all that the car runs freakin perfect but the shudder still exists


what I am doing this weekend:

EGR valve and ICM

Does your problem go away when you press the gas and raise the RPM or put load on the trans?
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Old 02-01-2006, 10:50 PM   #17
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How about the cat? I had similiar issues but they were more pronounced. Turned out the cat was clogged and the backpreassure was killing it under heavy loads (WOT from a stop or cruising at hwy speeds).
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Old 02-01-2006, 11:33 PM   #18
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Quote:
Originally Posted by Hans
Quote:
Originally Posted by bandit
UPDATE***

affter changeing the wires and plugs it is still doing it.

What else could it be?

Im thinking maybe O2 Sensor? or maybe some other ignition part?
I have a similar car to you, same engine transmission, and year and have a similar type of problem with a studder/shaking/etc at low RPM when the TC is locked or supposed to be locked.


Does your problem go away when you press the gas and raise the RPM or put load on the trans?

It sounds like the same thing, when the tork converter is locked and put a little gas on it, it starts doing it and when i put more gas it gets worse, but as soon as the tork convert unlocks it stop. it does it the wors when the RPM is around 1,500-1,700 (locked)
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Old 02-02-2006, 02:06 AM   #19
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Hey Bandit did you check your coils , if not check the resistance of each coil with a multi meter , tthe procedure is in techinfo.
Hans you should get yours scanned , sounds like your spending lots on good parts.
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Old 02-02-2006, 10:45 AM   #20
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Lets get a few things right here...

On the 94-95 the TPS is looked at in a bit of a diffrent way as comapred to a 92-93... On these cars the Air flow meter is used a bit more... Almost no air flow is looked at as idle, so the engine idles, and it sees increased air flow as acceleration... They act diffrent... I seriously doubt a TPS issue here...

At this point I'm going to tell you to rplace the plugs and wires... These cars are notoious for killing off a set of wires, and if they are original they are dure for replacement...

These cars use a waste spark method where a spark is wasted, but for this to function properly the power had to get where it needs to go... The coil actually fires both plugs at the same time, but the cylinder on the exahust stroke requires less power to fire the plug so the rest of the power goes the the cylinder on the compression strok which requires more power to fire it...

Most around here seem to like the Napa Belden( spelling ) Wires... I like the Autolite Professional Series wires... Both are good quality... As well most use NGK TR55'* or AC Delco plugs... I have used Autolite in the past and thats a good plug as well...

Let us know how it all goes...

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