1988 4Runner · 98 5VZ-FE swap
Research notes
One question per note: the research behind the wiring plan and the engine build.
- Gauges, speed signal, tach, CEL (98 5VZ-FE + A/T ECM into 88 4Runner, 88 cluster kept)
- Power budget, 98 5VZ-FE harness + A/T ECM on 88 4Runner fuses and relays
- 98 5VZ-FE engine-bay connections OTHER than II1/II2/II3 and the ECM
- Sealant, adhesive and grease alternatives for a 5VZ-FE rebuild (1998 4Runner)
- 98 5VZ-FE plug pin tables: summary
- Full-OEM-capability audit of the 98 5VZ-FE → 88 4Runner wiring plan
- Engine assembly bolt sizes (2026-10-27)