940 Wentworth Turbo Cutting Out

Jul 12th, 2002, 07:34

Help !!
I have a 92 Wentworth Turbo which keeps cutting out. The Idling immediately prior to the cut out is eratic, with the exhaust being sooty. I have cleaned all the connectors, and have cleaned the Air Mass Meter and all the hoses up to the throttle housing.The AMM platinum wire is intact and is not open circuit. The diagnostics read 211 for the Injection system. The car restarts fine after stopping,but the problem seems to be totally random, almost as if the ignition or fuel supply has been turned off. Any advice would be of graet help.

Thanks

Peter Milnes · Jul 13th, 2002, 00:02

On my copy of the codes there is no code 211. Code 311 gives faulty idling problems as the symptoms. Have you checked the fuel pump relay which is notorious for this problem.

All the best, Peter.

Jul 15th, 2002, 06:57

Hello Peter.
The fault code recorded was 121- my appologies.
I reset the computer on Friday, and checked 111 was logged on the diagnostic unit. The car stopped again on Friday, and when I checked the unit the fault was again logged as 121 indicating the AMM is at fault.
The unit I have found is very expensive so I only will fit one as a last resort. THe 740 has the same unit so that may be an option, however that's a gamble since the condition is not known.
This will be the 3rd one that the car has had since new so I wonder dwhether the Turbo cars are more succeptible to this failing ??

Peter Milnes · Jul 15th, 2002, 23:04

The code gives me "faulty in/out from AMM; wiring faulty inside or outside AMM." Have you checked the connections to the AMM thoroughly to eliminate poor connections or even broken connections which are making an intermittent contact? Have you checked the AMM wire thta goes across the AMM in the throat area of the AMM? It would seem that the problem is more related to poor contact in the wiring to the AMM. I am afraid there is nothing for it but a protracted fault finding session on the wiring between the AMM and the ECU. The poor connection could be at the ECU plug. The "in" pin is 7 and the "out" pin is 8 on the ECU. A signal earth runs from the AMM to the ECU on pin 6. There is a seperate earth from pin 1 on the AMM to the inlet manifold earth point (Brown wire).

All the best, Peter.

Jul 16th, 2002, 06:51

Thankyou Peter.
Your fault code explanation is far more detailed than the one in the Haynes Manual.
Are there more detailed codes available, and, if so where does one obtain a copy ?
Also, do you know where I may be able to purchase the Bosch Plugs at the end of the loom, since I may try replacing these as well ?

Cheers

Simon Harris

Jul 16th, 2002, 18:39

Simon,
I`m no expert on these systems but I have read that these AMM failures can be caused by the air fiter box thermostat sticking in the position that supplies warm air to the engine, this, in time cooks the AMM.
Might be worth checking.
Colin.

Peter Milnes · Jul 16th, 2002, 23:10

Send me your e-mail address and I will attach my copy from the Brickboard Maintenance FAQ. It is a .txt about 11kb (Notepad readable).

All the best, Peter.

Jul 18th, 2002, 06:36

Peter

Email Address is sharris@tcd.centrax.co.uk

You have already emaild me at this address I think.

Thanks again for your help.

Jul 12th, 2002, 07:34	#1
Simon_Harris Guest Location:	940 Wentworth Turbo Cutting Out Help !! I have a 92 Wentworth Turbo which keeps cutting out. The Idling immediately prior to the cut out is eratic, with the exhaust being sooty. I have cleaned all the connectors, and have cleaned the Air Mass Meter and all the hoses up to the throttle housing.The AMM platinum wire is intact and is not open circuit. The diagnostics read 211 for the Injection system. The car restarts fine after stopping,but the problem seems to be totally random, almost as if the ignition or fuel supply has been turned off. Any advice would be of graet help. Thanks

Jul 13th, 2002, 00:02	#2
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: 940 Wentworth Turbo Cutting Out On my copy of the codes there is no code 211. Code 311 gives faulty idling problems as the symptoms. Have you checked the fuel pump relay which is notorious for this problem. All the best, Peter.

Jul 15th, 2002, 06:57	#3
Simon_Harris Guest Location:	RE: 940 Wentworth Turbo Cutting Out Hello Peter. The fault code recorded was 121- my appologies. I reset the computer on Friday, and checked 111 was logged on the diagnostic unit. The car stopped again on Friday, and when I checked the unit the fault was again logged as 121 indicating the AMM is at fault. The unit I have found is very expensive so I only will fit one as a last resort. THe 740 has the same unit so that may be an option, however that's a gamble since the condition is not known. This will be the 3rd one that the car has had since new so I wonder dwhether the Turbo cars are more succeptible to this failing ??

Jul 15th, 2002, 23:04	#4
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: 940 Wentworth Turbo Cutting Out The code gives me "faulty in/out from AMM; wiring faulty inside or outside AMM." Have you checked the connections to the AMM thoroughly to eliminate poor connections or even broken connections which are making an intermittent contact? Have you checked the AMM wire thta goes across the AMM in the throat area of the AMM? It would seem that the problem is more related to poor contact in the wiring to the AMM. I am afraid there is nothing for it but a protracted fault finding session on the wiring between the AMM and the ECU. The poor connection could be at the ECU plug. The "in" pin is 7 and the "out" pin is 8 on the ECU. A signal earth runs from the AMM to the ECU on pin 6. There is a seperate earth from pin 1 on the AMM to the inlet manifold earth point (Brown wire). All the best, Peter.

Jul 16th, 2002, 06:51	#5
Simon_Harris Guest Location:	RE: 940 Wentworth Turbo Cutting Out Thankyou Peter. Your fault code explanation is far more detailed than the one in the Haynes Manual. Are there more detailed codes available, and, if so where does one obtain a copy ? Also, do you know where I may be able to purchase the Bosch Plugs at the end of the loom, since I may try replacing these as well ? Cheers Simon Harris

Jul 16th, 2002, 18:39	#6
Colin Shepherd Guest Location:	RE: 940 Wentworth Turbo Cutting Out Simon, I`m no expert on these systems but I have read that these AMM failures can be caused by the air fiter box thermostat sticking in the position that supplies warm air to the engine, this, in time cooks the AMM. Might be worth checking. Colin.

Jul 16th, 2002, 23:10	#7
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: 940 Wentworth Turbo Cutting Out Send me your e-mail address and I will attach my copy from the Brickboard Maintenance FAQ. It is a .txt about 11kb (Notepad readable). All the best, Peter.

Jul 18th, 2002, 06:36	#8
Simon_Harris Guest Location:	RE: 940 Wentworth Turbo Cutting Out Peter Email Address is sharris@tcd.centrax.co.uk You have already emaild me at this address I think. Thanks again for your help.

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