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Old 05-23-2020, 11:29 PM   #1
branden0502
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04 Expidition will not run unless MAF disconnected

04 Expedition. was running fine. one morning i went to start it, and it started but died about 2 seconds later. no codes. I replaced the AIC valve based on searches, and it had no effect. i dissconected the MAF sensor and it will stay running, but extremely rough. I tested all 4 wires coming from the sensor. 12v at the red wire. black is grounded. less than 1 ohm on the 2 wires going to the pcm. 12volts on the Tan/LB wire with the key on/Engine off. I replaced the MAF with 2 differant sensors and it also had no effects.



What should i try next?
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