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Discussion Starter #1
I think I have my poblem narrowed down to the inability of the pump to change quantity(add fuel). Does anyone know how to test the quantity circuit at the pump? I am looking for wire and test method. I have searched all over and found nothing yet. I think I either have a bad connectiion, bad wiring, bad signal from ECU or the pump is not funtioning properly.

No codes, car will not rev just idles.
02 jetta automatic
 
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