2001 Ford Ranger OXYGEN SENSOR

HILLHEAD

MEMBER
2001 FORD RANGER
6 CYL
2WD
AUTOMATIC
112,000 MILES

MY SCANNER ALLOWS ME TO SEE THE DATA STREAM. THE TWO SENSORS UPSTREAM SHOW RICH/LEAN SWITCHES AND VOLTAGE CHANGES. THE DOWN STREAM SENSOR (AFTER THE CAT) SHOWS "NO DATA" BUT THERE ARE NO CODES SET. ENGINE IDLES ROUGH, IT RUNS FINE UP TO 50 MPH THEN MISFIRES BAD AGAIN. NEW- MAS-TPS-COIL-PLUGS-FUEL FILTER- ANYONE GOT ANY IDEAS. THANKS.

Tuesday, February 23rd, 2010 AT 12:25 PM

6 Replies

JACOBANDNICKOLAS

MECHANIC
110,053 POSTS

Have you checked the downstream sensors?

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Monday, March 1st, 2010 AT 10:54 PM

HILLHEAD

MEMBER
8 POSTS

I THINK THE ONLY OXYGEN SENSOR DOWNSTREAM IS THE ONE THAT SHOWS "NO DATA" BUT SETS NO CODES. THE TRUCK RUNS LIKE CRAP---

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Tuesday, March 2nd, 2010 AT 5:30 PM

JACOBANDNICKOLAS

MECHANIC
110,053 POSTS

I would check it to see if that is where the problem is. It may not be setting the light for some reason.

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Wednesday, March 3rd, 2010 AT 6:40 AM

HILLHEAD

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8 POSTS

THANKS.I WILL REPLACE THE SENSOR. HOPE IT SOLVES THE PROBLEM.

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Wednesday, March 3rd, 2010 AT 8:57 AM

JACOBANDNICKOLAS

MECHANIC
110,053 POSTS

You can check the resistance in the old one to see if it is bad, or maybe one or the parts stores will do it for you.

Let me know if you have questions.
Joe

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Wednesday, March 3rd, 2010 AT 10:05 AM

HILLHEAD

MEMBER
8 POSTS

I REPLACEDTHE DOWNSTREAM OXYGEN SENSOR AND IT MADE NO DIFFERENCE. IT STILL SHOWS "NO DATA" ON MY SCANNER. ALSO IF YOU UNPLUG THE IAC OR THE MAS IT DOES NOT CHANGE THE WAY THE ENGINE IDLES, WHICH IS CRAPPY. NO CODES SET.

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Wednesday, March 3rd, 2010 AT 3:37 PM