Question about 1994 Oldsmobile Achieva Special Edition

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Hesitates or pulsates when accelerating

Engine has hesitations when accelerating. Especially going uphill. hesitations are sporadic.

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  • patmills001 May 29, 2009

    not sure of the one answer but we put injector cleaner in and premium gas as well the sensor etc was cleaned with throttle body cleaner and it was found that one of the plug wires was loosened when i had the lube and oil job done . although it is not totally smooth yet it seems to be heading that way. thanks so much for your help. pat

  • Anonymous Mar 30, 2014

    engine hesitate on accelerating but run good after

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  • Oldsmobile Master
  • 14,036 Answers

Sound like tps sensor.

Posted on May 23, 2009

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Your excellent description provides a very short list of possible culprits, since your vehicle's symptoms all appear during periods of higher fuel demand.

(1) fuel filter - clogged - your description is absolutely classic (especially stumbling upon uphill acceleration) for a fuel filter in need of replacement.
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The troubleshooting section of the 1998 Honda Civic EX manual states:

Priority Action Part Type Cause
1 Inspect Throttle Position Sensor - Faulty or Incorrectly Connected Throttle Position Sensor.
2 Inspect Mass Air Flow Sensor - Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
3 Inspect Choke - Stuck or Improperly Functioning Choke.
4 Inspect Air Cleaner Tempature Sensor - Damaged or Faulty Air Cleaner Tempature Sensor.
5 Inspect Fuel Filter - Clogged or Dirty Fuel Filter.
6 Inspect PCV Valve - Plugged or Damaged PCV Valve.
7 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.
8 Inspect Fuel Injector - Dirty or Worn Fuel Injectors.
9 Inspect Hose (PCV) - Clogged or Collapsed PCV Hoses.
10 Inspect Fuel Pump - Faulty Fuel Pump.
11 Inspect Fuel Pump - Low Fuel Pressure.

Here's a YouTube video describing hoe to replace a fuel filter on a 2000 Honda Civic (the closest I could find for your 1998).

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