Acceleration 1997 SSEI - 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 02-05-2008, 04:15 PM   #1
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Default Acceleration 1997 SSEI

When accelerating from a dead stop it seems like I have to give it a lot of pedal to get the car moving it feels like an anchor. I realize this is a heavy car but our 1992 non supercharged picks up and goes quite easily. Could this be due to the supercharger on the 1997 SSEI ? I have noticed when cold too that the boost gauge fluctuates slightly when sitting at idle. I seem to be using a fair amount of fuel in the city without driving hard. I just changed the fuel filter and oil change and coolant flush thats it since I bought it 2 weeks ago. Any suggestions would be appreciated.
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Old 02-05-2008, 04:20 PM   #2
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do you mean the rpms go up but the car doesn't move, or you press the gas pedal and the rpms don't move
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Old 02-05-2008, 04:26 PM   #3
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Default Acceleration 1997 SSEI

Thanks for the reply Its kind of hard to describe but I just think the power from a start is low the rpms seem fine I'll have to monitor it more closely but if I punch it it flies, just under low power it feels like it need a fair bit of throttle to get it moving and fuel consumption seems a bit high.The car is new to me so I'm still getting used to it.I am really curious why the boost gauge fluctuates when its cold with no throttle applied?
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Old 02-06-2008, 12:04 AM   #4
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The boost gauge fluctuation could be as simple as an old vacuum line that'* leaking. What you've described is something that my Bonneville is afflicted with as well - though I'm inclined to think that mine may be more likely a voltage irregularity. Sometimes it will stand straight up at 12 O'Clock when I start the car (and treat that position as it would the -10psi marker) - that happens more often when I have the accessory position on the ignition engaged for any length of time before starting, instead of just going right into the start position.
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Old 02-06-2008, 01:41 AM   #5
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Your description of having to give it tons o' throttle to get moving sounds like worn clutches or a slipping torque converter.

How'* the transmission fluid look? Smear some from the dipstick onto a white rag...is it nice and red and "sweet" smelling, or sorta brownish and burnt-smelling? Any little black particles?

Perhaps do a stall test: parking brake on, left foot holding the brake pedal down firmly; put it in Drive, and press the accelerator quickly just until you hear a "groan" or "creak" from the tranny and note the rpm'* on the tach...then let off the gas (and put it back in Park). You should be reading around 1800-2000 rpm on that test. Significantly higher and you're TC may be shot.

(Note: Stall testing like this can be VERY hard on the TC...do it quickly, and only once )
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Old 02-06-2008, 04:40 PM   #6
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Default Acceleration 1997 SSEI

Thanks for your replies so far none of the suggestions apply to what is going on but I do appreciate your input.
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Old 02-07-2008, 12:31 AM   #7
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When did you check you rear brakes last? They could be hanging up.
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