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1999 cougar 2.

 

Customer Question

1999 cougar 2.5, cel on, codes p1131,p0171

 

Optional Information:
Year : 1999
Make : Mercury
Model: cougar
Engine: 2.5 V6 A/T

Already Tried:
checked for vacuum leaks, none found

Submitted: 938 days and 9 hours ago.
Category: Mercury
Value: $10
Status: CLOSED

Accepted Answer

Picture
Expert:  Tim West replied 938 days and 9 hours ago.

Chat Conversation Started

Tim West :

Thanks for visiting Just Answer,

Tim West :

If there are no vacuum leaks, this is more than likely a problem with the o2 sensor.

Tim West :

The #11 O2 sensor is the sensor in the exhaust manifold of the rear cylinder head.
Customer :

I was leaning in that direction. Just wanted confirmation.

Tim West :

Yea, the MAF is possible, but the o2 sensor is most likely.

Tim West :

When these 2 codes are together history shows o2 sensors have fixed the problem.

Tim West :

DO you have a scan tool?

Tim West :

still here?

Tim West :

Get back to me when you can

Customer :

Sorry. Had to attend to other business. Replaced 1 1 o2 sensor, erased code and road tested extensively. No cel so far. Sent customer on his way. Hoping for the best. I do have a scan tool that gives me data. What did you have in mind? For future reference. Thanks, Customer

Expert TypeASE Certified Technician
Category: Mercury
Pos. Feedback: 100.0 %
Accepts: 43
Answered: 9/23/2010

Experience: ASE certified Service Manager

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