1987 Oldsmobile 98 sputter or stalling

Tiny
KLOGAN2604
  • MEMBER
  • 1987 OLDSMOBILE 98
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 87,032 MILES
When I put vehicle into drive and depress gas the car starts to sputter but does not stall unless I completely depress the gas pedal all the way. If I gradually give gas the vehicle will slowly accelerate but will not exceed 50mph. I have replaced air filter and gas filter and have added fuel cleaner additive. The only other odd symptoms that may apply is that the vehicle starts and dies immediately upon initial start but after turning key second time vehicle starts and runs fine. Vehicle runs smoothly when idling. Thank you in advance for your time and help.
Wednesday, May 27th, 2009 AT 11:20 AM

5 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
Could be several things lets see if your car will tell us.
Locate the ALDL connector under center of dash. Get a paper clip and jumper between the last two terminals on top row that's A &B. Turn key so dash lights are on just before start position. Obeserve the check engine light it will start to flash. Flash once pause then flash flash that = 12. Count flashes and record number like flash flash pause flash is 21.
Let me know
Thanks for donate
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Wednesday, May 27th, 2009 AT 1:00 PM
Tiny
KLOGAN2604
  • MEMBER
  • 3 POSTS
I inserted the paper clip as you instructed and turned the key foward to the on position but I observed no check engine light coming on at all yet alone flashing.
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Thursday, May 28th, 2009 AT 8:45 AM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
You turned key all the way just befor start? Dash lights on? Does check engine light when you start car?
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Thursday, May 28th, 2009 AT 12:16 PM
Tiny
KLOGAN2604
  • MEMBER
  • 3 POSTS
Yes I did turn the all the forward, and only the oil light, battery/amp light come on. The check engine light does not come on nor has it come on at all during vehicle operation. Thanks again for all your attention and help
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Thursday, May 28th, 2009 AT 1:15 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
O.K. Problem with communication with ECM. So back to basics recent plugs, wires cap and rotor? Air and fuel filters good?
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Thursday, May 28th, 2009 AT 1:39 PM

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