Preparation for testing, 18 obd2 – Equus 3160 - ABS/SRS + OBD2 Scan Tool User Manual

Page 20

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Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET

18 OBD2

WHEN DID YOU FIRST NOTICE THE PROBLEM:

Just Started

Started Last Week

Started Last Month

Other:

m

LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS:

PROBLEMS STARTING

No symptoms

Will not crank

Cranks, but will not start

Starts, but takes a long

time

ENGINE QUITS OR STALLS

No symptoms

Right after starting

When shifting into gear

During steady-speed

driving

Right after vehicle

comes to a stop

While idling

During acceleration

When parking

IDLING CONDITIONS

No symptoms

Is too slow at all times

Is too fast

Is sometimes too fast or

too slow

Is rough or uneven

Fluctuates up and down

RUNNING CONDITIONS

No symptoms

Runs rough

Lacks power

Bucks and jerks

Poor fuel economy

Hesitates or stumbles on

accelerations

Backfires

Misfires or cuts out

Engine knocks, pings or

rattles

Surges

Dieseling or run-on

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