emissions vent valve wiring - Automotive Wiring and Electrical


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes

When I bought this car in summer 2023, a...

Grounding Cable, 2017 Jeep Renegade Trailhawk

The Cable that connects my negative batt...

Rough Idle (Found new thing)

Hi everyone. First of all sorry for bad ...

equipment

hey yall. im a first year engineering st...

HELP

I have a 1956 1/2 ton panel truck, 69 35...

Howdy

    Just wanted to s...

ABS/Tractiob/Brake Lights on But No DTCs

Hello all, Recently while driving m...

Chevy strut replacement

I'm trying to get a sensor of some kind ...

2020 suburban new transmission and issues after install

recently had the transmission fail at 11...

Caliper piston post cleaning won't screw in

Hello, 2013 Hyundai Elantra limited (ma...

emissions vent valve wiring

Sign up here!

Email This Post

Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical

jimbo-jim
User

Aug 14, 2019, 11:32 AM

Post #1 of 5 (933 views)

emissions vent valve wiring	Sign In

2000 Silverado 2500 6.0
does anyone have a wiring diagram for the vent valve from the relay to the connector? I believe that I have a broken ground wire

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 14, 2019, 12:24 PM

Post #2 of 5 (927 views)

Re: emissions vent valve wiring	Sign In

No, the ground wire is the control wire. It goes to the PCM and that is how the valve is turned on and off. It receives constant power with key on.

Most of the time the problem is the valve itself mostly due to the conditions it is subject to.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

(This post was edited by Hammer Time on Aug 14, 2019, 12:26 PM)

jimbo-jim
User

Aug 14, 2019, 2:24 PM

Post #3 of 5 (909 views)

Re: emissions vent valve wiring	Sign In

well let me tell you a little more about what i'm against . I got a code po449 about the current being out of wack so I have checked the pink wire I've got 12.00 volts but I did not have a ground so ran a separate ground from the battery to the connection got a ground the valve is opening and closes but I still get a code.any ideals?

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 14, 2019, 2:33 PM

Post #4 of 5 (905 views)

Re: emissions vent valve wiring	Sign In

Of course you do. Get rid of that ground wire. The PCM decides when to open and close that valve through the ground. That's also how it sets the code.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

jimbo-jim
User

Aug 14, 2019, 4:21 PM

Post #5 of 5 (897 views)

Re: emissions vent valve wiring	Sign In

thanks so much

Email This Post

Search for (options) Privacy Sitemap