- posted
6 years ago
93 explorer wont stay running unless maf is uplugged.
- Vote on answer
- posted
6 years ago
So, what error codes have you got and have you thoroughly checked for vacuum leaks or any leaks in the plenum after the MAF?
When you unplug the MAF, the ECU goes into a limp-home mode where it disregards the MAF data and just runs everything way rich. What else does it disregard in the process? Possibly one of the other things it is disregarding is a problem, possibly it's bad data coming from the MAF.
The most common source of bad data coming from the MAF is air leaking into the system after the MAF. Sometimes a cracked plenum will be fine one day, then the next day leak like hell.
You say you "bought an odb1" and it was "giving the same voltage error on all sensors." What exactly did you buy and what was it for?
--scott
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- posted
6 years ago
The 4.0 has an issue with cracked intake plenum's letting in extra unmetered air. Fire it up and spray a bit of carb cleaner around the intake and listen for the engine to change.