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Discussion Starter #1 (Edited)
I just have a question about my pcm .I have a 99 durango slt when I fill my tank my overhead would read 500 km for most of the 2 years I've had it till about a month ago . Now it reads 350- 400 kms It used to say 13.8 mpg avg and now it reads 9 mpg .Has any one had this prob It does have about210,000 kms.The rpms sit about 700 at idle seems to run smooth .So i'm losing over a 100 miles per tank can't figure it out . is there a prob with my fuel regulator ?Do I need a flash?
 
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