Not running right at full throttle

20

Asked by Derek Aug 31, 2020 at 04:26 PM about the 1998 Ford F-150 XLT Extended Cab SB

Question type: General

F150 5.4 motor runs great at half throttle
won't run at full throttle

3 Answers

Is the check engine light on? It may need spark plugs, coils, air filter etc. Some Techron in the gas tank might also help.

20

Yea its giving codes that it's lean in bank 1 and 2

1 people found this helpful.
20

Put new mass air flow sensor in problem went away. Thanks for all the input

1 people found this helpful.

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