ENGINE CODES

Ford Ranger

Tiny

wildcat2008

June, 24, 2007 AT 10:09 AM

I have a 2000 Ford Ranger with 95,000 miles and a 3.0 liter engine that has had an intermittent check engine light for the last few months. It will ocassionally idle rough and also have strong odor from the exhaust. It had the OBD codes checked and they came up with P0133, P1131, and P0171. These all seem to indicate a lean air/fuel mixture. I could not find any vacuum leaks. How can I diagnosis my problem?

FOUND 27 RELATED QUESTIONS

P0133 Code

5 ANSWERS

P0133

9 ANSWERS

4 Answers

Tiny

merlin2021

June, 29, 2007 AT 9:37 AM

If you haven't changed the o2 sensors yet try that. They send the signal to PCM to adjust mixture.

Tiny

wildcat2008

July, 1, 2007 AT 2:22 PM

Is there any diagnostics to do before randomly changing parts?

Tiny

merlin2021

July, 5, 2007 AT 12:42 PM

Without spending a few thousand dollars on test equiptment, you diagnose partially with OBDII codes! Wich you already did? They point to the O2 sensors. Last reply here!

Tiny

wildcat2008

July, 10, 2007 AT 6:52 AM

Well first of all there are 4 sensors on my truck. Are you saying I should replace all of them? I don't think so. There are procedures for running down the causes of computer codes, I thought maybe you knew them. Obviously you don't. Your plan is to keep replacing parts until the problem is fixed.

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