Question about 1999 Chevrolet Silverado 1500

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Egr valve 99 Honda passport dohc v6

Codes PO 401,452 showing. Can I clean valve or do I have to replace It? Thanks! Dale

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  • Anonymous Mar 12, 2014

    where is the EGR Valve on 1997 Honda Passport

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Both i have cleaned some and it works and sometimes it doesnt get the gasket they will sell you just the gasket now you have to have some really small brushes there are moving parts in there that have to be cleaned you can just barely see them get you some brake cleaner i use q-tips after i do the wire brush thing good luck and let me know if you need any more help

Posted on Jun 26, 2009

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Yes you can clean the EGR valve with carbon that's carbon cleaner. But you could use Carbrator cleaner but it won't clean as good as Carbon cleaner.

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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1996 Honda passport lx/DX 4 door 4wd red 5 speed w/ izzuzu 32valve v6


honda/rodeo clone with the correct motor fitted
what was the question ?

The Isuzu V engine is a family of all-aluminum 75° V6 gasoline engines produced by Isuzu . ... This engine featured 175 hp from 1993-1995 and 190 hp from 1996-1997. ... in Japan, and in North America as Isuzu Rodeo and the Honda Passport . .... engine was Isuzu's newly developed 4.2L, DOHC 32 valve V8 engine, and ...








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Apr 22, 2017 | Honda Cars & Trucks

1 Answer

99 Honda Passport EGR valve what's the difference between $49.00 valve and $300 valve both have the same warranty?


If they are both new EGR valves, the difference is $251. That's the only difference :) (An EGR valve that works is an EGR valve that works... no premiums or upgrades or high definition or anything... just an EGR valve.)

May 15, 2015 | Honda Cars & Trucks

2 Answers

99 acura code p1491


Code P1491 in Honda/Acura vehicles means insufficient EGR valve lift. Note - this is not the same as 0401 for EGR low flow when you have to clean EGR passage in the intake manifold. If code 1491 is not accompanied with 0401 - that could be faulty EGR valve itself. Try to reset the code, and if it will return soon - replace EGR valve. If, however you see both codes together - cleane the manifold passage before you replacing the valve.

Sep 20, 2012 | Acura RL Cars & Trucks

1 Answer

P401 code?


P0401 OBD-II Trouble Code - Insufficient EGR Flow

What does that mean?
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.


Symptoms
You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.


Causes
A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum


Possible Solutions
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve


Hope this helped (remember comment and rated this).

May 05, 2010 | 2002 Honda Passport

1 Answer

Engine light came on, car is hard to start. Just downloaded the codes and it shows 404 and 456. What part do I need to replace?


404 is an EGR code
and 456 is gas leak

So probably tighten gas cap or replace gas cap for code 456 then for code 404 clean carbon deposits from EGR valve or replace it then e mail me for a certain test that has to be done at sj196653@yahoo.com thanks

Feb 13, 2010 | 2007 Honda Pilot

2 Answers

Ok I?m getting a p1297 code and then I?ll start getting po301 If I erase the codes then start the car and let it idle ill get the po300 po301 po302 po303 Then drive the car ill get the p1297 If I erase...


Clean the EGR valve seat. The EGR may have become stuck. A good way to check for vacuum leaks is to use smoke near every intake vacuun hose . And near the intake manifold. The valve will **** in the smoke. If you clean the EGR valve and it still misses. Replace it. The EGR can cause random misfire.

Jan 06, 2010 | 2001 Volkswagen Beetle

3 Answers

How to clean EGR valve passages in 1993 Isuzu Trooper DOHC V6


You have to the EGR valve (sometimes the Intake manifold to EGR Vlalve line also). After you remove it take a drill bit the about 20 % smaller than the actual hole of the outlet side and rotate the drill bit with your hand to dig out the carbon. Aditionally the line coming from the intake manifold to the EGR valve will clog near the connection to the EGR valve. I use either a single piece of copper wire or the wire that you would use to tie ribar together to clean the line. When your done cleaning take a piece of vacuum line and connect it to the diaphram side and **** on it... then plug the line well with your thumb. Grasp the valve and blow thru it... Air should blow thru it freely. Remove your thumb from the vacuum line and try blowing again.. No air should pass thru the valve.
Then reinstall the valve and start the vehicle with the vacuum line disconnected (but blocked off) Use another piece of vacuum line connected to the diaphram again and **** on the line.. The vehicle should die or run really bad. If it does this then you cleaned it correctly.

Oct 25, 2009 | 1993 Isuzu Trooper

2 Answers

How do you clean the EGR valve on a 99' Honda Civic?


Pull vacuum on egr valve with engine idling and see if engine stumbles and tries to die until vacuum is released. If this DOES NOT happen the egr exhaust passage is plugged will need to remove egr valve assembly and remove carbon from passage into cylinder head.

Mar 29, 2009 | 1999 Honda Civic

2 Answers

Egr valve


It's under the hood, driver side, upper engine area attached on the end of the cylinder head

Oct 29, 2008 | 2000 Honda Passport

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