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1998 Oldmobile jerking and bucking
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kyolds
New User
Jul 9, 2009, 1:36 PM
Post #1 of 4
(2176 views)
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1998 Oldmobile jerking and bucking
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I have a 1998 Oldsmobile cutlass with a little over 95,000 miles (not sure of engine size) that recently started jerking and bucking around while driving. This usually only tends to happen when the engine has warmed up a bit and has been running for a few miles, also it only bucks when the gas is pressed .When I first noticed it I noticed my tachometer drop out to 0 then back up to around 2000 RPM's. This started one day after I had quickly accelerated around slow moving traffic. I thought this may be my transmission slipping so a tried putting it in park, then giving it gas, but the engine bucked while in park. Could this be a fuel injection problem, or is it still a transmission problem, or none of the above ?
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Loren Champlain Sr
Veteran
/ Moderator
Jul 10, 2009, 9:39 AM
Post #2 of 4
(2171 views)
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Re: 1998 Oldmobile jerking and bucking
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This kind of sounds like a mass air flow sensor issue, but should check fuel filter, first. This engine has a 'rev' limiter, so once you get to a specified rpm (around 3500-4000) it will give you a 'surge' type operation. Do you have a check engine or 'service engine soon' lamp illuminated on the dash? If so, have the trouble code(s) retrieved and post them for us.
Loren
SW Washington
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kyolds
New User
Jul 21, 2009, 11:04 AM
Post #3 of 4
(2146 views)
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Re: 1998 Oldmobile jerking and bucking
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Had the fuel filter replaced, and a set of new plugs and wires. Check engine light did not come on until a few days after the original post. The codes from it stated there was an error with the O2 crank shaft sensor...or something like that, so I had the crank shaft sensor replaced. I picked it up from the mechanic and it still bucks, and the check engine light is still on. Could this still be a fuel problem still, possibly fuel injection system ? Could this be something as simple as a new air filter. Please help.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 21, 2009, 11:18 AM
Post #4 of 4
(2141 views)
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Re: 1998 Oldmobile jerking and bucking
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What is the exact code number being set?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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