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1993 explorer maf problems
- Thread starter BigRick74
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murkinstock
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- '99 Explorer Sport
Welcome to the forum!! 
Did you clear the codes and then it popped up again?
If so:
Check everywhere for vacuum leaks, I know that can throw off the MAF sometimes, because the computer senses extra air getting into the engine that is not accounted for so it thinks there is a problem with the MAF.
At least that's how I understood it.
The plastic lines break often, I've also seen a few intake tubes develop holes in them. Check everywhere.
Report back with what you find. Good luck!
Did you clear the codes and then it popped up again?
If so:
Check everywhere for vacuum leaks, I know that can throw off the MAF sometimes, because the computer senses extra air getting into the engine that is not accounted for so it thinks there is a problem with the MAF.
At least that's how I understood it.
The plastic lines break often, I've also seen a few intake tubes develop holes in them. Check everywhere.
Report back with what you find. Good luck!
2stroke
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- 1993 Ford Explorer Sport
This is the only info I could find about a code 90 anywhere. Its not even listed on most trouble code lists.
SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE LEFT OR FRONT SENSOR. EXCEPT: 1984-1988 3.8L ENGINES: RIGHT SENSOR
How did you come to the conclusion that your MAF is in working condition? Every time I see a code 157 on this board, it turns out to be a bad sensor. The MAF is one of the hardest to test accurately, and often the only way to know for sure is a CEL. I would recommend you replace it unless you already have.
Code 998 basically means it is in limp mode.
SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE LEFT OR FRONT SENSOR. EXCEPT: 1984-1988 3.8L ENGINES: RIGHT SENSOR
How did you come to the conclusion that your MAF is in working condition? Every time I see a code 157 on this board, it turns out to be a bad sensor. The MAF is one of the hardest to test accurately, and often the only way to know for sure is a CEL. I would recommend you replace it unless you already have.
Code 998 basically means it is in limp mode.
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