Running rich?

Kejtar

PostMaster General

NAXJA Member

Location

Westminster, SoCal

• May 20, 2011

• #1

I have a 97XJ with a recently swapped in low mileage engine (about 10K on it). I think I'm running rich. Why do I think ? Well.. the aroma of the exhaust and really poor fuel economy idling/low speed (15~25mph).

How would I test for it? (I was thinking about going to do a smog pretest )

 

whitexj98

NAXJA Forum User

Location

Cali

• May 20, 2011

• #2

Hook up a scan tool and look at the pids. Short term, long term fuel trims and O2 senser readings will tell you if it's running rich.

 

Kejtar

PostMaster General

NAXJA Member

Location

Westminster, SoCal

• May 20, 2011

• #3

whitexj98 said:

Hook up a scan tool and look at the pids. Short term, long term fuel trims and O2 senser readings will tell you if it's running rich.

Click to expand...

Assuming I don't have one of those gismos: any other suggestions or ideas?

 

whitexj98

NAXJA Forum User

Location

Cali

• May 20, 2011

• #4

Well I guess you could find that thread on testing o2 sensers and see what they are reading or add to you tool collection! I got the same one on sale at sears for 75.
http://shop.advanceautoparts.com/we...LUE3-_-VALUE4&ci_src=14110944&ci_sku=99994272

Or you could go to the auto parts store and use thiers.

 

Kejtar

PostMaster General

NAXJA Member

Location

Westminster, SoCal

• May 20, 2011

• #5

Hmmm I wonder if mine reads that info too... I only used it for codes in the past.

 

whitexj98

NAXJA Forum User

Location

Cali

• May 20, 2011

• #6

Might check, it's usually labled under data, running data, or pids.