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1992 Ford Ranger wont pass smog

Tiny
SHOGOX10
  • MEMBER
  • 1992 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
My ford wont pass smog I pulled up the codes off it
an it cam up with a 171 an I looked it up an it says something a bout a map sensor but I cant find it
Tuesday, March 24th, 2009 AT 4:19 PM

6 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Which engine do you have 2.9/3.0/4.0L?
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Tuesday, March 24th, 2009 AT 4:28 PM
Tiny
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The 4.0 its also coming up with high CO
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-1
Tuesday, March 24th, 2009 AT 4:30 PM
Tiny
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The 4.0 its also coming up with high CO
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Tuesday, March 24th, 2009 AT 4:49 PM
Tiny
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High carbon monoxide (CO) emissions are a telltale sign of a rich fuel mixture. On older carbureted vehicles, fuel-saturated plastic floats, incorrect float settings, leaky power valves and misadjusted chokes are often responsible for the rich mixture. On newer vehicles with feedback fuel controls and fuel injection, leaky injectors, excessive fuel pressure and sluggish or contaminated O2 sensors are all possibilities to investigate.
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Tuesday, March 24th, 2009 AT 5:05 PM
Tiny
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Then waht about the map sensor. Dose it even have one
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Tuesday, March 24th, 2009 AT 5:11 PM
Tiny
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The MAF sensor is on the air cleaner assembly
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Tuesday, March 24th, 2009 AT 8:02 PM

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