22/07/06 11:57 AM22/07/06 11:57 AM #1 Here's a curly one for you Drove my car home on Thursday night, no problems at all, parked it for the night, no problems.Got out Friday morning, turned the key, and only a single splutter and then just cranking, but NO GO Have since spent a long time fault finding, and I have found that the trigger signal for the injectors is missing, so no fuel enters the engine I have checked everything, and it appears that all wiring is intact, all body (-) wires are present, and with low resistance (the injectors have constanty 12V on one side, and the PCM triggers the other side to body (-) as required to inject fuel).Looks like the PCM may have died overnight Thursday to Friday
22/07/06 12:03 PM22/07/06 12:03 PM #3 Author I haven't specifically checked, but I would say so, as the ignition works, and if I rig a small siphon tube to suck some petrol under vacuum, the engine starts and runs.Any other suggestions??
22/07/06 12:06 PM22/07/06 12:06 PM #4 Is the signal for the injectors feed straight from the ecm to the injectors..? what about the intertia cut out switch in the lh foot well? as far as i know it only shuts down the fuel pump but it may be worth checking..?
22/07/06 12:06 PM22/07/06 12:06 PM #5 fuel filter?? fuel pump? are you getting fuel to the rail? Pull a hose off and find out.
22/07/06 12:09 PM22/07/06 12:09 PM #6 How are you testing the signal to the injectors? I was lead to believe that the signal is very hard to measure with a normall digital multimeter so you have to use the plug in LED injector testers..?
22/07/06 12:10 PM22/07/06 12:10 PM #7 Author It is definitely electrical, as Simon and I had the fuel pump out yesterday, and all confirmed OK.I have also tried to connect a test lamp across the injector plug, and nothing happens, I.e. no earth, so the light does not come on when I crank the engine.the 6 trigger wires for each injector comes directly from the PCM, and I have confirmed this connection is also physically OK.
22/07/06 12:11 PM22/07/06 12:11 PM #8 Author How are you testing the signal to the injectors? I was lead to believe that the signal is very hard to measure with a normall digital multimeter so you have to use the plug in LED injector testers..?←You may be right, but I do not have one of these
22/07/06 12:12 PM22/07/06 12:12 PM #9 do you have a mulitimeter that can test duty cycle and frequency.?
22/07/06 12:14 PM22/07/06 12:14 PM #10 If you dont have an injector testor you would need a light source that draws the same current as the injector to test for a signal..
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