P1493 code

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Christopher9486
Posts: 2
Joined: Wed Oct 19, 2016 6:34 pm
Car: 1998 nissan maxima gxe

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I have a 1998 nissan maxima gxe. I recently have replaced the valve covers and cleaned out the egr tube. I had no dummy lights on before I started working on the car. After I finished it have a p1493 code that says it's a evap purge code. I can not find anyone else with this code on the Internet. I have rechecked my vacuum lines and they seem ok. The car is becoming harder to start and sort of pops. The idle is slightly lower than normal too. Ido say 500-600rpms. Losing my damn mind with this. I also have recently acquired a knock sensor code too. I fill up with premium fuel only. Any help guys would be much appreciated.


NutriaforBreakfast
Posts: 1316
Joined: Wed Sep 26, 2007 1:41 pm
Car: Nissan Maxima 1995 VQDE engine

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Check the gas cap first-are you closing it until it makes a racheting sound?

Christopher9486
Posts: 2
Joined: Wed Oct 19, 2016 6:34 pm
Car: 1998 nissan maxima gxe

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Yes the gas cap is tight. The car seems to be using a ton of fuel too.

04pathse
Posts: 777
Joined: Sun May 02, 2010 2:55 pm
Car: 2004 Nissan Pathfinder SE
2008.5 Mazda Mazdaspeed 3

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NutriaforBreakfast
Posts: 1316
Joined: Wed Sep 26, 2007 1:41 pm
Car: Nissan Maxima 1995 VQDE engine

Post

Use the Service Manuals through this website

P1493 is "EVAP Canister Purge Control Valve/Solenoid Stuck Open"

Section to work with is "EC" or engine controls
Look on pages EC-415 to EC 421.

Test the solenoid electrically and verify the hoses are not plugged/split


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