Questions & Answers for: Ford F-150 998

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Question about 1991 F150

1 Answer

91 for d f-150 error code 998 Recently did an eec-iv test with 2 error code first code 126 which is my map sensor second code 998. I am waiting to get a new map sensor should be here by Saturday. But ...

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i have code 998 hardfault mode ,how can i clear this code try disconnecting battery for about ten minutes this clears codes half the time

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Question about 1991 F150

1 Answer

...I HAVE REPLACED NEW BATTERY, CHECKED GROUNDS, USED CODE READER (TELLS ME MULTIPLE CODES EVEN CODE 998 ENGINE RUNNING IN FAILURE MODE). 02 sensor shud be tested as well as some others since car is ...

...its a vx400? wiring diagrams are at the end of the manual. ...

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