i replaced the pressure regulator on my 91 ford explorer and the check engine light comes on when you drive after about 2 miles i had a code reader put on to find out what was wrong and the reader said that there was nothing wrong how strange any answers for this then when you turn car off the light does not come back on until you drive it 2 miles again any help would be helpful thanks again
check your vacume lines,,did you hook them up right or break one with the fuel pressure reg change,,just a thought
well here is the deal with this i found a plug that had a broken wire on the mass air flow meter so i changed the plug and all is good now so thanks for you help and it was just a stupid problem.
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