Question about 2001 Chevrolet Silverado 2500HD

Open Question

Location of egr valve on 6.6 duramax - 2001 Chevrolet Silverado 2500HD

Posted by Anonymous on

Ad

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
juswannadj
  • 42 Answers

SOURCE: 2004 duramax black smoke and sputtering when

Black smoke means "fuel not being combusted" or "runnig rich". I have no doubt you have gasoline. Your spark may not be burning the gas. Is there a check eng lite? If EGR was sticking, you would probably get a check engine light for this. If your truck has a Vortec design, I would find out if you need a new "spider". What is your mileage? Are you due for a tune up? What spark plugs are you using? Vortec? "Not all the time" sounds like intermittent. When was the last time you changed the fuel filter? Can't hurt to change this. This would be the actaul starting point for me. I would change the fuel filter which is under the driver under the chasis. You will need a 16MM and a 20MM. USE ONLY LINE WRENCHES. You may need a fuel line disconnect kit too depending on your model. Notice it only happens on acceleration? that is when you are forcing even more fuel thru the system, but not enough of a fuel stream make cause sputtering and when the fuel comes thru too rich that would be the black smoke. It sounds like you have the 2 extremes. is there afuel regulator on your vehicle? If so, you may need to change that too. Good luck.

Posted on Sep 10, 2009

Ad
ZJLimited
  • 17970 Answers

SOURCE: I replaced egr valve on

Are you in California. Did you put aftermarket exhaust on the truck? California Duramax are configured differently and if you mess with the exhaust it trips an EGR code that will turn the SES light on. Now, on a truck configured for Minnesota or Iowa changing the exhaust trips a code but it wont turn on the SES light. So, do you have any mods?

The LB7 EGR valves are vacuum operated, unlike the LLY,LBZ,LMM which are electrically controlled. This is why a finger stick does not work with LB7's.

The most likely cause is the belt driven vacuum pump which is mounted below the belt tensioner. These do go bad and stop pumping vacuum. Usually they make a knocking noise when bad. You need to pull a vacuum hose off on top of the fuel filter the runs to the vacuum pump and check it for vacuum with the engine running. Should have at least 15 inches. If this is not the problem the it gets a little more complex from here.


P0404 - Exhaust Gas Recirculation Circuit Range/Performance

The EGR (Exhaust Gas Recirculation) system's purpose is to redirect exhaust gas back into the cylinders. Since exhaust gas is inert, it displaces oxygen and fuel, thereby lowering cylinder temps, which, in turn, lowers oxides of nitrogen emissions. For that reason it needs to be carefully metered into the cylinders (via the EGR valve) so as not to adversely affect the engine's performance. (Too much EGR and the engine won't idle).

If you have a P0404, then the EGR valve is likely an electrically controlled EGR valve instead of a vacuum controlled EGR valve. Also, the valve will usually have a feedback system built into it that informs the PCM (Powertrain Control Module) what position the valve is in; open, closed, or somewhere in between. The PCM needs to know this to determine whether or not the valve is operating as needed. If the PCM determines that the valve should be operating, but the feedback circuit shows that the valve is not open, this code will set. Or if the PCM determines the valve should be closed but the feedback signal indicates that the valve is open, this code will set.

Symptoms: There may be no symptoms of a P0404 DTC other than the MIL (malfunction indicator lamp) or check engine light. However, Exhaust Gas Recirculation systems are inherently problematic due to carbon buildup in the intake manifold, etc. This normal buildup can lodge in an EGR valve, holding it open when it should be closed. If this is the case, the engine may idle rough, or not at all. If the valve has failed and is NOT opening, then symptoms would be higher combustion temps and as a result, higher Nox emissions. But the latter symptoms aren't going to be noticeable to a driver.

Causes: Usually this code points to either carbon buildup or a bad EGR valve. However that doesn't rule out the following:
* Open or short in the 5 Volt reference circuit
* Open or short in the ground circuit
* Open or short in the PCM controlled voltage circuit
* Bad PCM (less likely)

Possible Solutions:
1. Using a scan tool command the EGR valve to open while watching the actual EGR position (it will probably be labeled "desired EGR" or something similar). The actual EGR position should be very close to the "desired" EGR position. If it is, then the problem is likely intermittent. It may have been a lodged piece of carbon that has since dislodged, or it could be a bad EGR valve winding that intermittently opens or shorts as the valve temperature changes.
2. If the EGR "desired" position is not close to the "actual" position, then unplug the EGR sensor. Check for a good 5 Volt reference voltage to the connector. If it doesn't show a reference voltage, repair an open or short in the 5 Volt reference circuit.
3. If there is a 5 volt reference voltage, activate the EGR with the scanner, monitor the EGR ground circuit with a DVOM (Digital Volt/Ohm meter). It should indicate a good ground. If it doesn't then repair the ground circuit.
4. If there is a good ground, then check the control circuit. It should indicate voltage that varies according to the percentage that the EGR is open. As it's open more, the voltage should increase accordingly. If it does, then replace the EGR valve.
5. If the voltage doesn't increase incrementally, then repair open or short in EGR control circuit.


Keep us updated.

Posted on Jan 25, 2011

emissionwiz
  • 77169 Answers

SOURCE: avalanche 2007 where is the egr valve location

Rear right hand side of engine compartment

Posted on Aug 20, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Where is egr valve located on 1983 chev s10 blazer


4 cylinder model the EGR valve is located between 2 & 3 cylinder on intake manifold and between Carb and valve cover it has a diaphragm cover about 3 inches round and one vacuum hose 2 bolts holds it to the intake. V-6 models EGR valve is located on drivers side of engine just behind carb and about the same size and roundness and one hose two bolts.

Nov 04, 2013 | Ford Expedition Cars & Trucks

1 Answer

Location of egr valve on 2003 chevy silverado


Hi there:
Here is a picture showing the EGR valve on the 4.8 Litre V8. The numbers below go with the picture. The arrow points to the front of the truck.

(1) Fuel Injector 2 Connector
(2) Throttle Actuator Control (TAC) Motor Connector
(3) Throttle Actuator Control (TAC) Motor
(4) Exhaust Gas Recirculation (EGR) Valve Connector
(5) Exhaust Gas Recirculation (EGR) Valve
(6) Fuel Injector 6
(7) Ignition Coil 2


9_14_2012_3_34_36_am.jpg
Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Sep 14, 2012 | 1989 Chevrolet Camaro

1 Answer

Auto part store says there is no egr valve on 08 dodge ram 1500 4.7. True?


25 - Emissions Control/Exhaust Gas Recirculation, Gas/VALVE, Exhaust Gas Recirculation (EGR), 4.7L/Removal REMOVAL collapse.gif Labor Operations: Click to display a list of Labor Operations associated with this procedure

2431021.jpg The electronic EGR valve and solenoid assembly is attached to the rear of the left cylinder head. An exhaust gas routing tube connects the EGR valve to the intake manifold.
1. Use a diagnostic scan tool to record any Diagnostic Trouble Codes (DTC). 2. Remove the throttle body resonator. 3. Perform the fuel system pressure release procedure (Refer to 14 - Fuel System/Fuel Delivery - Standard Procedure) 4. Disconnect and isolate the negative battery cable.


2430847.jpg 5. Disconnect the power brake booster vacuum hose (1) and the vapor canister purge hose (2) at the intake manifold.


2430720.jpg 6. Disconnect the EGR valve solenoid electrical connector (1).


2430801.jpg 7. Remove the EGR valve assembly retaining bolts (1). 8. Remove the EGR valve and the EGR routing tube from the engine as an assembly. 9. Remove and discard the metal gasket located between the cylinder head and the EGR valve assembly.


2433378.jpg 10. Remove the EGR valve routing tube retaining bolts (1) at the EGR valve assembly 11. Remove the EGR valve routing tube and discard the gasket.

Feb 14, 2012 | 2008 Dodge Ram 1500 2WD

1 Answer

Looking for diagram that shows egr valve on 97 nissan pickup


On page 6-6, Hanes #72030, you will find the diagram that shows the EGR Valve for models 1981 through 1984.The diagram also is followed by models 1985 through 1997. The valve works exactly the same in the 1997 as it does in the 1984. If you need a diagram online, follow this link;

http://www.nissanpartszone.com/diagrams/large/D21U/nissan-hardbody-pickup-1995-1997-egr-parts-147a001.png

Nov 15, 2010 | 1997 Nissan Pickup

1 Answer

How do I locate and replace EGR valve?


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} EXHAUST GAS RECIRCULATION (EGR) VALVE REPLACEMENT

REMOVAL PROCEDURE
1. Turn OFF the ignition. 2. Disconnect the EGR valve electrical connector 3. Remove the bolt retaining the pipe assembly from the EGR valve and carefully pull the pipe assembly back. 4. Remove the EGR valve retaining bolts. 5. Remove EGR valve assembly. 6. Remove the gasket. INSTALLATION PROCEDURE
1.
Install the EGR Valve with a new gasket to the intake manifold. NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the bolts through the EGR valve. Tighten Tighten the bolts to 30 N.m (22 lb ft) 3. Connect the pipe assembly to the EGR valve. 4. Install the bolt. Tighten Tighten the bolts to 30 N.m (22 lb ft) . Connect the EGR valve electrical connector.

Jan 30, 2010 | 2001 Buick Regal

1 Answer

I need to know how to install a egr valve in a 05 duramax disel GMC sierra


Once you are able to identify the EGR, you simply unbolt the valve and ant other obstaructing part. Clean its surface of carbon. Repalce the gasket if worn. Any sticky bolt/nut that you encounter could be removed by spraying some WD-40 around them. Also disconnect the negative wire of the battery first. Diesel do run hot, so get ready for some hard bolts to loosen.

Oct 21, 2009 | 2005 GMC Sierra 2500HD 4WD

3 Answers

Autozone hooked the car up to its diagnostic computer it read that the egr valve but they said it could be one of 6 things it could be,is this true?


Check for

vacuum leaks on intake manifold,

the air tube between the air filter.

intake manifold vacuum hose.

===
clean throttle plate with Berryman carburator cleaner

SEE sample picture HERE
===

Also remove carbon built up behind the EGR valve and the EGR passage tube.

===

Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.

More un-metered air (leaks) will lean out the fuel mixture.

Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.

At idle,just spray and listen for the RPM surge.

The in-rush of carb clearer will increase the RPM on the motor.

Record the problem spot(s) and address it later.

===

EGR carbon built up require 2+ hours to clean from start to finish.

You will need a new EGR base gasket before your start.

Locate and remove the EGR valve after the vehicle is cool down.

Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.

Remove the EGR valve.

Inspect the location of the carbon built-up inside the valve and the EGR passage tube.

SOAK these areas with WD-40 spary.

You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.

RE-SOAK the carbon and let it sit for over-night will also help.

One the last round,pass a shop vacuum of the EGR valve and the passage pipe.

Install the new EGR gasket and connectors.

Allow the vehicle to warm up outdoor to burn up any remaining WD-40.


Take it for a test drive.


Please rate my answer if it's useful to you.


Cheers,

Mustgo

Oct 17, 2009 | 1995 Lincoln Town Car

2 Answers

Duramax Shuts off at 1000 rpms


I had tha same problem it was the high pres. fuil pump. mine was 2000 rpms and 25 to 30 mile an hr was all i could get out of mine. hope this help you out.

Apr 20, 2009 | 2005 Chevrolet Silverado 2500HD 2WD

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

220 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22258 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...