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International Automotive Technicians Network
1993 Mercury Cougar XR-7 3.8L Poor Idle Quality
Posted to Ford Driveability on 1/3/2006 5 Replies

Customer dropped off car with fast idle, 4000 to 5000 RPM. We tested for a vacuum leak around intake, injectors, and vacuum hoses. Found no idle change. Next I removed the IAC and found it to be stuck slightly open. After replacing the IAC the car ran great.

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5 Replies Received (View Replies)

  Related Documents & Media  1993 Mercury Cougar XR-7

 
Message Closed w/FIX

car Vehicle Data

1993 Mercury Cougar XR-7

VIN 1MEPM6240P
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / MPI
EmissionsOBD1
SymptomsPoor Idle Quality
OccursAlways

Trouble Codes

157maf voltage low
173system rich bank 1
211pip circuit failure
326ept low voltage
335ept voltage range
Message Closed w/FIX

car Vehicle Data

1993 Mercury Cougar XR-7

VIN 1MEPM6240P
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / MPI
EmissionsOBD1
SymptomsPoor Idle Quality
OccursAlways

Trouble Codes

157maf voltage low
173system rich bank 1
211pip circuit failure
326ept low voltage
335ept voltage range