Question about 1999 Chevrolet S-10

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1985 s10 2.8 v-6 sluggish around 45 mph

When starting off, it seems to run fine! but as soon as it hits about 45mph, it gets really sluggish until I work it slowly to 55mph or so and its ok after that! while in that speed range, when I press on the gas, it doesn't seem to want to do much unless I floor it and then it back fires!!! What could be the issue???????? Please help!!!! Thanks

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  • jeremy
    jeremy Apr 01, 2014

    it just dont seem right that it so sluggish in that speed range! i know that it is an old truck but, it runs good other than that!

  • jeremy
    jeremy Apr 01, 2014

    BTW it is a 1985 S10 2.8L V-6 Automtic

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  • Chevrolet Master
  • 1,250 Answers

If you have a data scanner some of data doesn't code like out of range look for tps ,map,engine temps sensor data
hope it helps

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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SOURCE: Speedometer is jumping around

The speedometer cable needs lubricating. It can be removed from the bottom where it connects to transmission, coated with graphite and reinstalled.

Posted on Apr 28, 2009

  • 79 Answers

SOURCE: 1992 Chevy S10 2.5L 4 Cylindar very sluggish to accelerate

Hi
Check engine codes could be map sensor or 02 sensor.
Check for vacuum leak at map sensor, causes high fuel consumption.

Posted on Apr 02, 2009

  • 91 Answers

SOURCE: Engine stalling in stop & go traffic

sound like to me you have a clogged catalytic converter

Posted on Apr 27, 2009

  • 62 Answers

SOURCE: Spit and sputters, doesnt want to go unless your right on top of the gas.

Hello

I am also facing the same problem

http://consumerguideauto.howstuffworks.com/1990-to-1994-chevrolet-lumina.htm

This will help you

Thanks

Posted on May 24, 2009

  • 64 Answers

SOURCE: '02' Chevy Malibu loss of power

how it seems that your problem is in the tranmission. has the transmission ever had the fluid changed in it? if not then i would have it checked out and changed. it might even be a bad sensor causing the engine to free spin and not engage the transmission i would defently have the transmission checked out.

Posted on Jun 09, 2009

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