Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - Flickering Service Engine Soon/Code 44
1985 Buick Century V6-231 3.8LSECTION Engine Controls - Flickering Service Engine Soon/Code 44
Bulletin 85-6E-20
Date
Aug.. '85
Ref. No. 85-276-6E
SUBJECT: FLICKERING "SERVICE ENGINE SOON" LIGHT AND/OR TROUBLE CODE 44
MODELS AFFECTED: 1985 CENTURYS EQUIPPED WITH 3.8L MFI ENGINES (VIN CODE 3)
A flickering "Service Engine Soon" light and/or a stored trouble code 44 (lean exhaust indication) may be caused by the oxygen sensor wire being pinched between the engine block and the power steering pump bracket. A scan tool could indicate this condition with a zero (mv) oxygen sensor reading while the "Service Engine Soon" light is flickering.
If this condition is experienced, separate the oxygen sensor lead wire from the main harness electrical conduit as necessary, and repair the wire using procedures described in Section 8A of the Buick Chassis Service Manual.
Date
Aug.. '85
Ref. No. 85-276-6E
SUBJECT: FLICKERING "SERVICE ENGINE SOON" LIGHT AND/OR TROUBLE CODE 44
MODELS AFFECTED: 1985 CENTURYS EQUIPPED WITH 3.8L MFI ENGINES (VIN CODE 3)
A flickering "Service Engine Soon" light and/or a stored trouble code 44 (lean exhaust indication) may be caused by the oxygen sensor wire being pinched between the engine block and the power steering pump bracket. A scan tool could indicate this condition with a zero (mv) oxygen sensor reading while the "Service Engine Soon" light is flickering.
If this condition is experienced, separate the oxygen sensor lead wire from the main harness electrical conduit as necessary, and repair the wire using procedures described in Section 8A of the Buick Chassis Service Manual.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.