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Re: Car not firing...AGAIN!
Posted by Dean (more from Dean) on Fri, 3 Dec 2004 07:04:09
In Reply to: Re: Car not firing...AGAIN!, SWEDECAR
[Profile/Gallery]
, Thu, 2 Dec 2004 21:23:28
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Resistance is 860 ohms, +/- 90. I suspect that a hot no start problem is very high or infinite ohms, a mechinical open circuit.
If ECU does not get pulses while cranking, trouble code P0337 should be set. If pulses lost while running, then P0336 should be set. But perhaps these are set in the ECU, but a CEL is not posted. Perhaps because it was decided that you do not need to alert the driver to a problem with the engine if it will not run at all. Maybe the mechanics are not reading codes if they do not see a CEL.
When cranking, the ECU will not activate the fuel pump relay until the CSP pulses are detected. The brief fuel pump run at ingnition on is another situation. If pulses are lost while running, docs do not state if fuel pump gets deactivated.
Can Tech-II see pulse status or fuel pump relay status? Might be useful for trouble shooting a hot will not start situation.
posted by 68.95.11...
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