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1999 Ford F-150 Lariat 4.6L Poor Idle Quality
Posted to Ford Driveability on 12/6/2003 6 Replies

Hey Guys,

Need some help,please. Turn on a/c or defrost and truck will idle down and then back up(surge)the whole time compressor is [...] compressor kicks off,idles perfect. ONLY happens when a/c is on. Idles perfect with a/c off. Couple of weeks ago,put in ...

6 Replies Received (View Replies)

  Related Documents & Media  1999 Ford F-150 Lariat

 
Message Closed w/FIX

car Vehicle Data

1999 Ford F-150 Lariat

VIN 1FTRX18W1X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIdle, With A/C on Only

Trouble Codes

P0401EGR System Insufficient Flow Detected
Message Closed w/FIX

car Vehicle Data

1999 Ford F-150 Lariat

VIN 1FTRX18W1X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIdle, With A/C on Only

Trouble Codes

P0401EGR System Insufficient Flow Detected