Re: Vauxhall Vivaro 1.9 CDTi 2004 - No throttle responce, no fault codes # Archived Message
Posted by ROY RITCHIE  on August 18, 2009, 10:06 pm, in reply to "Re: Vauxhall Vivaro 1.9 CDTi 2004 - No throttle responce, no fault codes #"
This is a vauxhall tsb. Models: Engines: Option:
Vivaro 2001...2007 F9Q-762-1.9 DI| F9Q-760-1.9 DTI All
Complaint: Loss of throttle response. Engine starts and idles OK but will not rev up for up for 10-15 seconds.
Cause: Associated to either known ECU s/w calibration concern or faulty single fuel injector.
Production: New ECU introduced on production with revised level software from F9Q760 (released October 2005) and F9Q762 (released April 2005). This s/w is the same level as available to Aftersales from TIS CD65 V14.500 when carrying out an SPS program. Remedy:
In case of customer complaint re-flash engine ECU with TIS CD65 V.14.500 or
later. Revised s/w is available for both F9Q760/762 engines from SOP to
MY2005 inclusive.
If the vehicle already has the later s/w or after programming the fault
remains 1 fuel injector is likely to be the remaining problem. Follow the
guidelines shown below for diagnosis.
Replacement of all the diesel fuel injectors which was considered the
previous fix for this complaint is no longer necessary since the
introduction of special service tool EN-47655 which allows individual
injector faults to be identified.
1. Check for conformity (quality) of the diesel fuel. Ensure only diesel
meeting BS EN590 or European equivalent grade is used.
2. Check for the fitment of additional electrical or engine driven equipment
because of their potential energy consumption (slow cranking) during start.
3. Confirm that the engine parameters rpm, flow of fuel, rail pressure,
status of the synchronization, accelerator pedal signal and air flow are all
within manufacturing specification when the engine coolant temperature is
90°C (with the EGR valve at 5%).
4. Check the fuel injector compensation values (return flow). Refer to TIS
Service Instruction 01401850 using service tool EN-47655. The visual fuel
return should be observed over 3 test cycles with the engine on idle and
coolant temperature > 50°C. A similar test should also be performed at
1500 rpm for comparison. Any deviation in measured return flow values
compared to the other injectors may indicate a fault. Always replace only the
injector with the furthermost deviation from the nominal value.
Note: Due to the fact that there is no capacity to check for flow adjustment
values with our diagnostic tool, it is important to pay particular attention
to the return flow values as this is our only available measure (see above).
5. Check that the fuel pressure is held 3 minutes after the engine is stopped.
Switch on the ignition and read the pressure at the rail. A stuck injector
needle would see a quicker drop in pressure than that normally observed.
CAUTION: Observe all normal safety requirements when dealing with common rail
injection equipment. The EN-47655 can only be used on F and G series engines.
New M9R engines are not compatible with this tool due to the increase in return
flow pressure.
|
|