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post #1 of 3 (permalink) Old 12-28-2006, 08:27 PM Thread Starter
 
Join Date: Dec 2006
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Egr

1994 LX with a 3.8 V6. Have a code for a low egr voltage. Need to fix because I believe this also kills the timing advance.
Also, scanner says sensor supply voltage is 4 volts. I am used to it being 5 volts on other brands. Give me a clue where to look. Thanks.
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post #2 of 3 (permalink) Old 12-28-2006, 10:33 PM
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EGR has nothing to do with timing advance. If you have a problem with that, fix that first, then worry about the EGR. As for the sensor supply voltage being 4v, if that's the case then you have high resistance in the sensor supply voltage wire going to the sensor. Easiest way to fix it would be to tap into another 5V wire and run it over to the EGR bypassing the wire that has 4V on it.

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post #3 of 3 (permalink) Old 12-31-2006, 02:42 PM Thread Starter
 
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pressure sensor

The exhaust gas pressure sensor has 3 wires and one hose from the egr tube to the sensor. The egr valve has no wires. The egr control solenoid has two wires and two hoses.
The pressure sensor will not hold any pressure or vacuum. I would think it should. I suspect the pressure sensor is my problem.
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