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Ford Ranger Repair Question


Topics covered: Sensor, Engine, Check engine light.
Mileage: No information provided.

Asked on June 24, 2007

Ford Ranger Engine Codes

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?
Avatar Asked by wildcat2008

Answer

Replied on June 29, 2007

I made a donation, can you please give me some help?

Tiny Response from wildcat2008
1 question asked
Replied on June 29, 2007

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

Tiny Answered by merlin2021 (expert)
18,145 answers provided
Replied on July 1, 2007

Is there any diagnostics to do before randomly changing parts?

Tiny Response from wildcat2008
1 question asked

Replied on July 5, 2007

Please refund the donation I made, I've gotten no help at all other than to randomly replace parts.

Tiny Response from wildcat2008
1 question asked
Replied on July 5, 2007

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 Answered by merlin2021 (expert)
18,145 answers provided
Replied on July 10, 2007

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. Please refund my money.

Tiny Response from wildcat2008
1 question asked