1992 Chevy Blazer poor acceleration

Tiny
92BLAZER4X4
  • MEMBER
  • 1992 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 189,000 MILES
My 1992 s10 blazer 4x4 is accelerating very poorly. I tried going up a small hill the other day and no matter how far I pressed on the gas pedal it souldnt go over 20 mph. Its very sluggish even when not going up hills. Takes a good while to get it up to 40 mph. Ive replaced the distributor and still no go. But I have noticed a considerable amount of play in the throttle cable prob an inch to an inch and a half! Could this be a problem?
Sunday, March 7th, 2010 AT 5:56 PM

6 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Yes it could be the problem, I would also do wires and plugs, change air filter and fuel filter, then clean the throttle body
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Sunday, March 7th, 2010 AT 7:48 PM
Tiny
92BLAZER4X4
  • MEMBER
  • 4 POSTS
Those are all new also maybe like a couple of months or so. I did do a paper clip test and the only problem it gave me was a O2 sensor it said. But I didnt think that could be the problem. The throttle body looked clean as well no build up or nothing
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Sunday, March 7th, 2010 AT 7:59 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Well the engine may not be going into closed loop, if the oxygen sensor is faulty. Without that, It will only run on a base set of parameters, you will not get anykind of performance out of it, so the oxygen sensor is a good start, I would address the mapp sensor too
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Sunday, March 7th, 2010 AT 8:05 PM
Tiny
92BLAZER4X4
  • MEMBER
  • 4 POSTS
Lol great! Is there a way to test the o2 sensor without an expensive tool? Working on veeeery limited income :(
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Sunday, March 7th, 2010 AT 8:09 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
I think I have something that will show you how in my reference material, hold on
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Monday, March 8th, 2010 AT 6:15 AM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Here you go

https://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm
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Monday, March 8th, 2010 AT 6:16 AM

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