1991 Ford Mustang LX 5.0L Poor Idle Quality, Stall
Mustang will stall, surge @ idle, "MIL" on with recurring code 66 (MAF ground fault), no diagnostics for this code in Alldata. Tried reman Motorcraft MAF sensor, no change. Someone has previously added a supplemental ground from MAF harness to radiator support...
FIX posted 7/29/2010
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Message Closed w/FIX
Vehicle Data1991 Ford Mustang LX
Trouble Codes
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Message Closed w/FIX
Vehicle Data
1991 Ford Mustang LX
VIN | 1FACP44E8M |
Engine | 5.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | Fuel Injection |
Emissions | Fed |
Symptoms | Poor Idle Quality, Stall |
Occurs | Intermittently |
Trouble Codes
66 | MAF ground circuit fault |