Question about Pro-Fit Pro.Fit Bm 51 97 Bmw 528i/540i/530i 97 Up

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5 series has fueltrim prob

I have a 97 5 series bmw that has a bank 1 fuel trim code i have checked the elbow from the t.b. , all vac lines and cant seem to locate the problem. i have sprayed t.b. cleaner around everything to no avail any help would be greatly appr.

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You may want to check O2 sensors or possibly have a mass air flow sensor acting up on you

Posted on Mar 31, 2009

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