Question about 1999 Volkswagen New Jetta

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What is the drive cycle for a 1999 vw jetta - 1999 Volkswagen New Jetta

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Marvin

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The drive cycle is as follows
For all OBD2 VW's

OBD-II Drive Cycle Stages
The OBD-II Drive Cycle is an eight-stage course, as illustrated in the
chart on page 3. An explanation of each step is provided below.
Stage 1: Cold Start-The ECM determines the presence of a cold start
by comparing the engine coolant temperature to the ambient air
temperature during startup. The engine is considered cold when:
• Engine coolant temperature is below 122°F (50°C).
• Engine coolant and intake air temperatures are within 11°F (6°C) of
each other at startup.
During this period, the O2S heater, misfire, AIR, fuel system, and EVAP
monitors run.

Stage 2: Idle 2½ Minutes-Turn the air conditioning (A/C) and
headlights on to help the misfire monitor-the additional electrical loads
help even out combustion pulses. During this period, the O2S heater,
AIR, EVAP, misfire, and possibly fuel system (if operating in closed loop)
monitors run.

Stage 3: Accelerate-Prior to accelerating, turn off the A/C and
headlights (if possible). Open the throttle halfway until you reach
55 MPH (89 KPH). During acceleration, the misfire, fuel system, and
EVAP monitors run.

Stage 4: Steady State Cruise-During this portion of the cycle, the
O2S, AIR, EGR, EVAP, misfire, and fuel system monitors run.

Stage 5: Decelerate-Gradually coast down without applying the
brakes. Also, on manual transmission vehicles, remain in high gear and
do not press the clutch. During this period, the EGR, EVAP, and fuel
system monitors run.

Stage 6: Accelerate-Apply ¾ throttle until reaching 60 MPH (97 KPH).
During acceleration, the misfire, fuel system, and EVAP monitors run.

Stage 7: Steady State Cruise-During this period, the CAT, O2S, AIR,
EGR, EVAP, misfire, and fuel system monitors run.

Stage 8: Decelerate-Gradually coast down without applying the
brakes. Also, on manual transmission vehicles, remain in high gear and
do not press the clutch. During this portion of the Drive Cycle, the EGR,
EVAP, and fuel system monitors run.

You can try this a couple times, but if it doesn't work you should go to a VW specialty shop like the dealer or a shop that does mostly European cars and they can use the scan tool to force the car through readiness.


Posted on Oct 11, 2010

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5 Related Answers

emissionwiz

Marvin

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SOURCE: Car cuts off while driving

the most likely cause of this is the carberater throttle kick up solenoid is defective or the carb deceleration damper is defective, u may one or both of these, have them tested for proper function, u don't have an airflow meter (this engine is not fuel injected) so ignore that mis-directed advice from exper tfrcs68

Posted on May 29, 2009

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Anonymous

  • 199 Answers

SOURCE: jetta wont start

serious electric problem, i think is the computer module try to get code with a mechanic

Posted on May 26, 2009

Anonymous

  • 3 Answers

SOURCE: vw jetta

Check the cable that runs from the battery to the starter.

Posted on Aug 08, 2008

Anonymous

  • 1 Answer

SOURCE: 1999 VW JETTA anti-theft alarm keeps going off & car won't start

pop the truck and the alarm will disable

Posted on Aug 17, 2009

Anonymous

  • 58 Answers

SOURCE: I have a 1999 VW Jetta that keeps running hot. I

Is the cooling fan comming on?
It must.

Posted on Oct 13, 2009

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