Engine, 3.8L (231 cu in) V6, 3800, multiport fuel injection

Years 1988–91 Models 3

Query this via API →

Also described as Engine, 3800 3.8L V6, multiport fuel injectionEngine, 3.8L V6, Buick 3800

Also documented for Buick Pontiac

Documented applications

Delta 88 — H-body (1986–1991)

1988–1991 Single-source

165 hp; Wikipedia's Oldsmobile 88 text says the 3800 replaced the earlier 3.8 L for 1988, while its engine table dates the LN3 from mid-1988 (printed "LN3/C", the VIN letter C); shared H-body code, but no sibling source prints it: gnttype.org's VIN tables end at 1987 and the NICB manuals read print no RPO codes

Ninety-Eight — C-body, front-drive (1985–1990)

1990 Single-source

VIN code C; 165 hp in 1990; Wikipedia's Ninety-Eight article names the LN3 for 1990 only and gives the 3.8 SFI 150 hp for 1987–1989, while its Buick V6 article lists the 1988–1990 Ninety-Eight under LN3, so 1988–1989 is left out as a conflict between the two articles; both are Wikipedia, so the row is single-source; shared C-body code, the Buick Electra is listed for the same years

Toronado — E-body (1986–1992)

1988–1990 Single-source

Wikipedia's Toronado article says the LN3 V6 arrived for 1988 and its Buick V6 article lists the Toronado and the Troféo under LN3 for 1988–1990 (one source); matched to the first year by the Toronado article and to the span by the engine article; description follows the Toronado article; the merged Buick Riviera doc reads this code with different fuel-system wording (Buick Riviera reads it as multiport fuel injection)

This page aggregates every documented appearance of LN3 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.