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Ford Scorpio Forum 24V Cosworth mystic stalling problem
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   24V Cosworth mystic stalling problem
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Scorpio_Mike
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Re: 24V Cosworth mystic stalling problem
« Reply #20 on: Aug 3rd, 2018, 9:33pm »
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on Aug 3rd, 2018, 4:50pm, Tompion wrote:
The 24v has a separate belt for the aircon.

 
I bow to your superior knowledge  Embarassed
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Tompion
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1997 2.3 Ultima estate. 1991 2.9 Granada Ghia.

   
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Re: 24V Cosworth mystic stalling problem
« Reply #21 on: Aug 3rd, 2018, 10:08pm »
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Grin I thought it was the case - but had to look it up to check
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theogrenietis
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Re: 24V Cosworth mystic stalling problem
« Reply #22 on: Apr 25th, 2019, 9:38pm »
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Hey,  
 
Some time has passed, but still there is no solution to this mystic problem. Just to be sure I replaced the fuel pump which was not the problem.  
In my studies I have discovered, that when the car does not start, the injectors are not working, question is - why?  
I have replaced fuel pump relays and it didn"t change anything, the relay itself is a 2 stage relay so I can't hot wire it to get past the relay, because I don't know which pin does what.  
It was really strange that when I was measuring for voltage, there was voltage on the injector connector when the ignition was off, but the voltage was 6v.  
Does 24V cosworth fire all the bank injectors at the same time?  If so, could it be possible that a shorted injector is making the whole bank to not fire?  
I have a donor car with a 24V cosworth PCM and PATS, if the problem is in the PCM, can I just replace the PCM and PATS for the car to fire up without problem? Or is some extra treatment needed?  
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Pianoman
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Re: 24V Cosworth mystic stalling problem
« Reply #23 on: May 15th, 2019, 4:14pm »
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I had the same problem on my 24v. Engine would start and run perfect for around 5-10 min then die. If left for a while, it would start again.  The problem turned out to be chaffed wires going into the ECU.  Once I taped these with electrical tape, the car ran fine.
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Tompion
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Re: 24V Cosworth mystic stalling problem
« Reply #24 on: May 16th, 2019, 10:29pm »
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You can change the PCM, no need to change PATS. Presumably the dash light behaves as it should & doesn't flash a PATS code.
 
The injectors fire individually. When the ignition is on they all receive + V from a common splice via the Violet plus trace side of their plugs as does the idle speed control valve which is also is connected to this splice. The PCM controls the negative side via the Black plus trace wires.
The PCM pins used for injectors are listed here:
http://www.fordscorpio.co.uk/24vlooms.htm
 
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