Question about 1994 Chevrolet Astro

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Where is the EGR valve located and how do you lower the idol?

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It will be under the hood in the back of the motor by the fire wall it connected to the exhaust pipe an its a vacaum valve for emissions an motor .The timing could be off making the idol higher than normal.

Posted on Nov 29, 2009

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Code p0403


EGR is the exhaust gas recirculating valve . It's part of the emission system designed to lower emission of nitrates of oxygen. The vehicles PCM is sensing a problem with the flow or lack of flow thru the EGR valve. The EGR system has several components including the egr valve, erg solenoid, possible EGR temperature sensor and/or a DPFE ( differential pressure feedback sensor) and vacuum hoses. They are located on or near the intake manifold and connects to the exhaust manifold system also.

Jul 15, 2014 | 2002 Mazda MPV

1 Answer

I NEED TO REMOVE THE EGR VALVE


The Exhaust Gas Recirculation valve does just what the name implies: it diverts some exhau st gases back into the intake system at low engine speeds. This lowers combustion temperature to reduce NOx levels. It also reduces throttle response and bottom-end power.
Disabling the EGR valve is easy. Locate the valve and the EGR vacuum modulator valve (two gold-colored metal stampings, usually at the rear of the engine). The EGR valve has steel lines leading to it from the exhaust manifold. The EGR vacuum modulator has two vacuum lines between it and the intake manifold and a third vacuum (soft) line between the modulator and the EGR valve itself.
EGR Vacuum Modulator
EGR valve (arrow) is shown adjacent tosimilar EGR vacuum modulator valve. EGR valve is connected to exhaust manifold with steel lines. Modulator has vacuum lines only.
Disconnect the vacuum line between the valve and modulator and place any solid object of appropriate size (dowel, etc.) in the line, then reconnect the line. Or you can get a EGR block off plate

Oct 14, 2013 | Cars & Trucks

1 Answer

1990 ford f250 still has miss


have you checked plug gap as this makes any car miss if not correct also coil packs could be faulty

Oct 03, 2012 | Ford Cars & Trucks

2 Answers

When engine starts it does not idle on the proper level. when it warms up it idles fine. I was told it might be my EGR valve. Is that a possibility?


yeah,. possible egr, but did you look at the IAC - Idle air control valve? -- controls the idle at cold engine temps by diverting the air from the manifold for heat to help warm up engine on cold start.
Best regards
Ck

Mar 08, 2011 | 1998 Lexus ES 300

1 Answer

Hi, My 96 jeep cherokee is running rough at idol and backfires. I replaced the fuel pump, plugs ,cap, rotor, intake air contorl mod.and wires. I cand seem to find egr. valve. can you please help?


You have a vacuum line off somewhere, or the egr valve is leaking at idol, or you have manifold vacuum hooked up to the egr valve, make sure the vacuum line going to the egr valve has no vacuum at idol, only during acceleration.

Oct 19, 2010 | 1996 Jeep Cherokee Country

1 Answer

2000 Ford Ranger- engine stalling when slowing down to idol


replace th air idle bypass valve this is located on the throtle body and has 2 screws with 1 plug with 2 wires to it

Dec 29, 2009 | 2000 Ford Ranger SuperCab

3 Answers

Location of EGR valve for 4.6 liter engine? how do you remove the EGR valve?


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EGR VALVE IS #2.

Please wait for second post to answer your second question....comes with a few pictures.

Nov 16, 2009 | 1992 Ford Crown Victoria

2 Answers

Egr valve location on dodge ram 2005 4.7


The EGR, or exhaust gas recirculation valve, takes inert exhaust gasses drawn from the exhaust system and reintroduces them into the combustion chamber through the intake manifold. This process lowers the peak combustion temperature and helps combat the formation of Nitrous Oxide (NOx) in the exhaust.

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  1. Separate the intake ducts from the air cleaner assembly by loosening the retaining clamps and pulling the ducts away from the housing.
  2. Disconnect the vacuum line from the air cleaner assembly.
  3. Remove the wing nut that secures the air cleaner housing lid to the base.
  4. Remove both the air cleaner hosing lid and base.
  5. Locate the EGR valve. Look at the front of intake manifold. The EGR valve will be bolted to the intake manifold just in front of the carburetor.
I hope help you with this. Good luck.

Sep 07, 2009 | 2005 Dodge Ram 1500

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