Adjust Valve Timing

(a) Check the fuel pressure.

NG CHECK AND REPLACE FUEL PUMP,

- PRESSURE REGULATOR, FUEL PIPE LINE

AND FILTER

READ DATA LIST (COOLANT TEMP)

Connect the intelligent tester to the DLC3. Turn the ignition switch to ON. Turn the tester ON.

Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / COOLANT TEMP.

Read the COOLANT TEMP twice, when the engine is both cold and warmed up.

Standard:

With cold engine: Same as ambient air temperature.

With warm engine: Between 75°C and 95°C (167°F and 203°F).

REPLACE ENGINE COOLANT TEMPERATURE SENSOR

READ DATA LIST (MAF)

Connect the intelligent tester to the DLC3. Turn the ignition switch to ON. Turn the tester ON.

Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / MAF and COOLANT TEMP.

Allow the engine to idle until the COOLANT TEMP reaches 75°C (167°F) or more.

Read the MAF with the engine in an idling condition and at an engine speed of 2,500 rpm. Standard:

MAF while engine idling: Between 2.0 g/sec and 4.5 g/ sec (shift position: N, A/C: OFF). MAF at engine speed of 2,500 rpm: Between 8.0 g/sec and 14.7 g/sec (shift position: N, A/C: OFF).

REPLACE MASS AIR FLOW METER

CHECK FOR INTERMITTENT PROBLEMS

DTC

P0327

Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

DTC

P0328

Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Responses

  • milla
    How to adjust timing on 2010 tacoma?
    2 years ago

Post a comment