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P1800 ES

posted by  142 guy on  Thu Aug 22 09:37 CST 2019
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Oct 22 20:18 CST 2014
[RELATED]

"and guess what, we have no gas upon
ignition or cranking, i can see gas making it over to CSV in my clear
tubing, now removed.

i connected both ways, still nothing, the test light gives no voltage, i
ran out of light, so more tomorrow,"

So, just to be clear, the fuel pump is priming and pressurizing the fuel rail; but, the cold start valve does not appear to be getting 12 volts when the starter is cranking? The starter needs to be cranking to get 12 volts at the CSV. If that is the case, the first thing I would do is to check the wiring on the termination plug for the CSV. If you removed and reconnected the plug a few times, the insulation may have become damaged.

The CSV is powered up by the CSV relay which is controlled by the D jet controller. You can find the relay in the schematic provided by Ron. I don't know the exact location on an 1800; but, it will be typically clustered with the main relay and the fuel pump relay. During cranking, check for 12 v on the 87 terminal of this relay. If you have 12v on the 87 terminal; but, no voltage at the CSV you have a bad connection between the relay and the CSV.






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