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2000 Pontiac Bonneville SE 3.8L Poor Fuel Economy
Posted to GM Driveability on 2/27/2009 14 Replies

Customer brought this car in with the complaint that the fuel milage dropped from 30 mpg to 20 mpg. He changed plugs and cleaned the MAF sensor with no improvment. All the codes I found were history codes. No current codes. On my test drive long term and short...

14 Replies Received (View Replies)

  Related Documents & Media  2000 Pontiac Bonneville SE

 
Message Closed w/FIX

car Vehicle Data

2000 Pontiac Bonneville SE

VIN 1G2HX54K8Y
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways

Trouble Codes

P1602PCM Not Programmed
P1626Theft Deterrent System Fuel Enable Circuit Malfunction
P1811Maximum Adaptive & Long Term Shift
Message Closed w/FIX

car Vehicle Data

2000 Pontiac Bonneville SE

VIN 1G2HX54K8Y
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways

Trouble Codes

P1602PCM Not Programmed
P1626Theft Deterrent System Fuel Enable Circuit Malfunction
P1811Maximum Adaptive & Long Term Shift