Evaportive Emissions problem
#1
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Hi,
I have a problem with the evap emissions control system but I don't know where I should start. I would appreciate any adivce on things to test. The check engine light was going on and off, but now it hsa been on for awhile. The most recent code is:
P0452 - Evaporative Emissions Control System Pressure Sensor Low Input
Perviously it has stored these two codes (taken about 2 weeks earlier):
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0453 Evaporative Emission Control System Pressure Sensor High Input
Thanks,Vince
I have a problem with the evap emissions control system but I don't know where I should start. I would appreciate any adivce on things to test. The check engine light was going on and off, but now it hsa been on for awhile. The most recent code is:
P0452 - Evaporative Emissions Control System Pressure Sensor Low Input
Perviously it has stored these two codes (taken about 2 weeks earlier):
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0453 Evaporative Emission Control System Pressure Sensor High Input
Thanks,Vince
#2
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Doubble check the gas cap, it's the easiest way to go. Unless you take it somewhere to get it smoke tested, you can't really find the leak yourself.
#6
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Is there anyway to test the sensor before replacing it? I phoned the local chev dealer's parts department and they told me that the sensor was a part of the fuel send unit and was not serviceable, are they pulling my chain? I have a Chev 1998 C/K Sierra with a 4.3l v6 engine.
#7
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The sensor is part of the sending unit, but itis not in the tank. It's located on top of the fuel pump module and has a wiring connector . Look on eBay at auction 8043135302. I think this is the correct sensor for your vehicle.
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February 9th, 2010 1:44 PM