Checks, in order
- Listen for the fuel pumpTurn the key to ON without cranking and listen for a two second hum from the rear seat or tank area. No sound means check the fuel pump fuse and relay before suspecting the pump.easy $ · under about $50
- Security light behaviorIf the security indicator flashes or stays lit, the immobilizer is blocking the start. Try the spare key.easy $ · under about $50
- Scan for stored codesCodes for crank or cam sensors point at the sensors that tell the computer when to fire. Fix those before replacing parts.easy $ · under about $50
- Check for fuel pressureConnect a gauge to the fuel rail test port and compare with the manual's spec. Low pressure means the pump or filter assembly.medium $$ · about $50 to $500
- Check for sparkUse an inline spark tester on a coil boot. If there is no spark on any cylinder, look at the crank position sensor and main relays.medium $$ · about $50 to $500
Applies to: 5th generation 4Runner, 2010 to 2024, with the 1GR-FE 4.0L V6 and the 5-speed automatic. Assumes the stock configuration; trim-specific items (KDSS, sunroof, A/C) are noted where they apply.
Tools and parts for these checks
Links below are Amazon affiliate links: as an Amazon Associate, toyotadata earns from qualifying purchases, at no extra cost to you. Confirm fitment for your exact truck before you order.
| ITEM | USED FOR | BUY |
|---|---|---|
| Bluetooth OBD2 scanner with live data | Reading and clearing codes and watching live sensor data | Shop on Amazon |
| Fuel pressure test gauge kit | Confirming the pump is delivering pressure | Shop on Amazon |
| Inline spark tester | Confirming there is spark at the plugs | Shop on Amazon |
The same problem on other Toyotas
- 3rd Gen Tacoma (2016–2023): Engine cranks but won't start or dies right after starting
- 1st Gen Tacoma (1995.5–2004): Cranks fine but won't start or dies after starting
- 3rd Gen 4Runner (1996–2002): Engine cranks but won't start
- FJ Cruiser (2007–2014): Engine cranks normally but won't start
- 100 Series Land Cruiser / Lexus LX 470 (1998–2007): Engine cranks normally but won't start
- 80 Series Land Cruiser (1991–1997): Cranks fine but won't fire
Other fuel & ignition problems on the 5th Gen 4Runner
- Rough idle, shaking, or misfire with a flashing check engine light
- Check engine light with P0171 or P0174, system too lean
More 5th Gen 4Runner problems
- Rust on the frame, flaking, or holes in the frame rails (Frame & Body)
- KDSS warning, fluid leak, or clunking and uneven ride on a KDSS truck (Steering & Suspension)
- Oil leak or oil smell from the front of the engine (Engine)
- Check engine light with P0420 or P0430, catalyst efficiency (Emissions)
- Temperature gauge climbing, coolant loss, or overheating (Cooling)
- Turn the key: click or nothing, engine won't crank (Starting & Charging)
All 16 5th Gen 4Runner symptoms in the interactive troubleshooter →
General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.