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1994 Oldsmobile 88 Royale 3.8L MIL Lamp on
Posted to GM Driveability on 8/25/2004 9 Replies

Having a little trouble with this one. MIL keeps coming back on after being drove aprox 1000 miles. With the same codes in memory P0401 and P1406. I have cleaned the EGR ports and replaced the EGR valve twiced the second time was with a AC delco part and still...

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car Vehicle Data

1994 Oldsmobile 88 Royale

VIN 1G3HN52L8R
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0401EGR System Insufficient Flow Detected
P1406EGR Valve Pintle Position Circuit Malfunction
Message Closed

car Vehicle Data

1994 Oldsmobile 88 Royale

VIN 1G3HN52L8R
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0401EGR System Insufficient Flow Detected
P1406EGR Valve Pintle Position Circuit Malfunction