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The butterfly valve on the air flow is sticking when cold fine when engine is warm pergoteu206

Peugteo 206 1999 petrol 5dr hatchback

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6 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

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Posted on Jan 02, 2017

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  • 14036 Answers

SOURCE: 92 mitsubishi libero, engine surges downward in cold

DIFFICULT STARTING CAR IN COLD.WOULD BE A THERMO - TIME SWITCH.THE THERMO TIME SWITCH CONTROLS THE AMOUNT OF TIME THE COLD START VALVE IS HELD OPEN BY MEASURING THE COOLANT TEMPERATURE AND UTILIZING A TIME FUNCTION TO PREVENT AN OVER RICH CONDITION.THIS COULD BE MOST OF YOUR PROBLEM.BUT SCAN IT TO SEE WHAT PCM CODE YOU ARE GETTING.

Posted on Sep 07, 2009

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ZJLimited
  • 17970 Answers

SOURCE: new egr valve installed. insufficient air flow.

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


For several solutions ans next steps, 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).

Posted on May 05, 2010

SOURCE: 1990 4Runner, 3.0 L engine, won't hold idle, wants

Have you looked at your idle air control valve What is it? This is an electrically driven valve that allows additional control over the throttle at idle Where is it located? The IAC is located on or adjacent to the throttle body and consists of a small device held on by two bolts with an electrical connector.
How does it work? When the throttle is closed the throttle plate closes off any air from the intake manifold. In order to stop the engine from stalling due to lack of air the IAC opens a small valve allowing air to pass from the air ducting to the intake manifold. Often the IAC components consist of an air inlet port in the inside wall of the throttle body, immediately in front of the throttle plate, with a similar exit port behind the throttle plate. Connecting the two ports is a motor driven valve. When the valve is opened air effectively by-passes the closed throttle plate to maintain the engine at idle. The IAC also augments the throttle when additional power demands are put on the engine such as steering.


Symptoms of faulty IAC

  • Poor starting: If the IAC fails to open or the inlet/exit ports are clogged shut with carbon the engine may start and then promptly stall. The engine can be kept running by pressing the accelerator. However any additional demand on the engine such as power steering or putting the car into drive (automatic) will cause the engine to stumble badly and often stall.
  • Engine cut out: Even with the engine warmed when the vehicle is stationary such as at a red light the putting of the transmission into of 'drive' to pull away before the accelerator is pressed can cause the engine to stall. (Note this differs from the TPS fault which causes engine stall due to the accelerator being pressed too quickly)

How to check? Physically remove the IAC but keep the electrical connection to it. Temporarily block off the now open ports on the throttle, turn the engine on and examine the IAC valve action in response to additional loads (power steering inputs etc). The valve should open and close according to demand.

How to fix? If the motor of the IAC has failed then replace the IAC. If the valve is gummed closed by baked oil and carbon then clean it thoroughly with carburetor choke cleaner spray and a cloth. Similarly if the entry and exit ports on the throttle body to the IAC look blocked again clean them out thoroughly.

Posted on Jun 03, 2010

Testimonial: "Fast response and good advice, I'll try these suggestions and let you know the results."

heatman101
  • 43501 Answers

SOURCE: Freezer is working fine. The refrigerator is not

Hi,

Check out these tips...they can help you figure out what is going wrong with your refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

How to Defrost Refrigerator Defrost Timer Problem

Water Running in refrigerator from Freezer


Refrigerator or Freezer not Cooling or Getting Cold


heatman101

//////////////

Posted on Dec 27, 2010

  • 5 Answers

SOURCE: need an Owners Manual for download. my car is

http://www.civicforums.com/forums/182-7th-gen/235295-looking-7th-gen-manual-free-updated.html

honda civic forum

you may also like the link below it is a 2005 civic sedan online reference owners manual in PDF format.

https://techinfo.honda.com/rjanisis/pubs/om/CV0505/CV0505MAINIXA.pdf

Posted on Aug 25, 2011

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3 Answers

What should happen when you deploy a choke on a lawn mower engine.


Hi Julie:
- When the choke is OFF, the butterfly valve is OPEN. That allows lots of air in (Lean Mixture) and is correct for when the engine is WARM.
- When the choke is ON, the butterfly valve is CLOSED. That makes the engine draw in MORE GAS (Rich mixture) and is used when first starting a COLD engine.
- Fuel in the engine oil is typically a different problem and would be associated with a faulty valve in the float chamber (or other location) in the carb.

Aug 07, 2015 | Gcv160 Gas Engine

1 Answer

How to adjust automatic choke


Procedure #1-
  1. Be sure the hook on the bimetallic spring contacts the choke shaft lever.
  2. Install the cover and retainer and lightly tighten the screws.
  3. Turn the ceramic element to align the mark on it with the middle mark on the housing.
~~~ Procedure #2-
  1. The engine must be cold to make this adjustment.
  2. Remove the air cleaner.
  3. Find the automatic choke. It's the round thing on the upper right-hand of the carburetor. There is a wire coming to it from the positive side of the coil.
  4. Note: The automatic choke is a round ceramic thing with the heating element wound inside of it. (The ceramic part may be covered with metal so that it looks just like the rest of the carburetor.) The choke is held in position by a triangular ring clamp and three screws so it can be loosened and rotated for adjustment.
  5. Pull the throttle arm on the left side of the carburetor down to free the little step arm (cam) that the screw at the top of the throttle lever rests on.
  6. Note: This stepped "cam" is connected to the butterfly valve inside the throat of the carburetor by a shaft that extends all the way into the automatic choke. With the engine cold, the butterfly valve should be closed. As the engine warms up, the coil inside the automatic choke uncoils, opens the butterfly valve, and moves the cam to reduce the idle speed.
  7. Release the throttle arm so that the return spring snaps it back. The little screw at the top of the throttle arm (again, with the engine cold) should now rest on the top step of the stepped cam. This sets the hi-idle, which is needed together with the choke on a cold engine to provide sufficient idle speed to keep the engine running until it warms up fully.
  8. Loosen the three screws on the right side that hold the choke in place.
  9. Keep your eye on the butterfly valve in the carburetor throat.
  10. Turn the choke element clockwise (viewed from the right) until the butterfly is standing straight up, then turn the choke counterclockwise (viewed from the right) until the choke butterfly fully closes (barely -- not too tightly), then tighten the three screws that hold the choke in place.
  11. Note: This is important; the automatic choke may be assembled wrong and not catching the hook on the coil spring at all.
  12. Start the engine with the air cleaner off. As the engine warms up, make sure that the butterfly opens until it is standing straight up (full open) when the engine is fully warm. If it doesn't, readjust the choke until you get it right.
  13. Note: The engine is now warm, so you won't be able to adjust the choke per the foregoing. Note the position of the notch on the side of the choke relative to the three little ridges on the body of the carburetor. If the butterfly is too far closed with the engine warm, turn the choke clockwise just a bit to straighten it up. The notch on the choke should never be too far outside of the three ridges on the body of the carburetor. If you are not able to adjust the choke using these method, something may be sticking, or perhaps the coil spring inside the canister is broken, or perhaps the wire has fallen off of the contact on the canister so that it is not getting power from the battery properly.

Jul 15, 2015 | Cars & Trucks

2 Answers

My 2003 Passat wagon turns off when I stop


If by "turns off" you mean it stalls, it is very likely time for a tune-up. Your vehicle is now 12 years old and deserves regular maintenance!

May 20, 2015 | 2003 Volkswagen Passat

1 Answer

Mine 96 cobra starts great in warm weather ,let it get 40 or below it will turn over and over,never gets fuel to fire it up,hit it with starting fluid in air flter it fires right up,,what could be the...


There's a shutter valve to restrict air flow either before or after the air filter housing. In cold winter, this valve is closed as you start up the engine. As the engine area warms up, the shutter valve opens up to allow more air to flow into the intake manifold. In close position, the restriction in air flow results in rich fuel mixture. When its open, the fuel mixture is leaner. If it were locked in open position, you crank the cold engine and you get a lean mixture instead of a rich mixture to start up in cold mornings.

Nov 29, 2013 | Cars & Trucks

1 Answer

Craftsman riding mower dies after it gets warmed up


Check the choke. Typically these are automatic types on most new mowers. The choke is closed during cold starts then automatically open as the engine warms (think of it like a car that fast-idles in the winter, then slows down as it warms...it's not exactly the same thing, but in theory works on the same principle).
What could be happening with your problem is that the choke is stuck closed or partially closed, and remains closed after the engine warms. When the choke is closed when the engine is warm, it floods the engine with fuel and stalls (and can be difficult to restart, if you can get it to restart).


To test if this is your issue, operate it until it's warm and quits. Remove the air filter and check that the butterfly valve at the top of the carburetor is open. If it's closed, open it all the way (might have to put a screwdriver, or something in there to hold it open), then try to restart it. If it's open all the way, there is likely a fuel flow restriction to the carb, or in the carb, but these problems typically cause problems running the engine hot or cold.

Two recommendations.
1. Remove carburetor, and clean with spray carb cleaner. The choke is the butterfly valve visible where the air filter attaches. Check the linkage for debris, bent or restricted linkage. After cleaning and re installation, check for free movement of butterfly choke valve.
2. Prevention. There is not a lot that can be done, but to clean the carb/choke and throttle linkage during spring tune up before first use. May require more cleaning depending on amount of use. ALWAYS USE 100% GAS, NO ETHANOL. If you must use ethanol because 100% gas in unavailable, always mix with an additive that neutralizes the effect of the ethanol. Infrequently used engines (unlike cars) that use ethanol are prone to problems because the fuel system retains water. Carburetors do not like water, cause corrosion, and repairs can be costly. For example, Someone just gave me a nice (fairly new) Bolens Riding Mower (38" B&S engine - worth about $800 ) that would not run, they just got tired of it not running right and the cost of repair shop work was about $200. I bought a $65 carb on Amazon and now I've got a nice new riding mower. They saved $.50/gal on gas and I saved $740 on a new mower...yeah, baby!

Sep 02, 2013 | Craftsman Garden

1 Answer

84 ford f150 carburetor was rebuilt runs great when cold kicks and bucks when warm have to stomp on throttle to get to go


Sounds as if your choke is hanging up, or not opening at all. With the engine warm remove the air cleaner, there is a butterfly valve right inside the top of the carburetor If this is closed or mostly closed your choke needs to be adjusted. There are manual and electric chokes, yours should be an electric choke. First with engine cold and the key turned to on check for voltage at the choke wires. If you have voltage, then you might just need to adjust your choke. Electric chokes heat up an element inside the choke to tighten a spring and open the choke butterfly valve at the top of the carburetor. There should be between 4 and 5 screws that hold a ring around the choke housing on the side of the carburetor with the wires going to it. While holding the round choke housing in place loosen all of the screws on the retaining ring. If you can feel the choke housing wanting to spin turn it the opposite way that it wants to turn. Do this in stages until your choke butterfly valve is open with the key turned on, or the engine warm. Hope this helps if you have more questions just ask.

Jun 18, 2011 | Ford F-150 Cars & Trucks

1 Answer

Cold start cranking problems 1987 toyota truck wont hardley crank when cold then fires fine after gets crunk till next morning


My 1987 truck I use to have had a choke and it would stick open some times. When you get in the vehicle, you have to press the gas pedal to the floor once to set the choke and add enough fuel to start the vehicle. I assume your vehicle has a carburetor and would suggest the following:

When your engine is cold, take off the air cleaner cover and base and look the butterfly valves. They are fist valve on the top of the carb air inlet. Go and step on the gas pedal once. Observe if the valves move to the almost closed position or not. If they don

Jan 05, 2011 | 1987 Toyota Pickup

1 Answer

I have jetta 2006 tdi highline it start good but in the vinter is take to long to warm up like i can go 10 km then will be warm the second problem is the car after get warm has to much black smoke can some...


the warming up problem may well be caused by the thermistat replace that first. you second problem sound like the mass air flow valve is stuck and is limiting your air flow which will make the engine supply to much gas.
when its warm pull the round air tube off of the intake if the valve is part of the intake itself you will see a butterfly vavle just inside the opening push this open if it is closed.
i htink this valve will be your problem

Nov 18, 2010 | 2006 Volkswagen Jetta

3 Answers

94 altima stalling


check the vacuum line and map sensor

Jul 16, 2009 | 1994 Nissan Altima

2 Answers

Engine surges when cold - Once it warms up it runs fine


If carburated, I would suspect a sticking choke, making the fuel mix way too rich.

Jul 02, 2008 | 1997 Jeep Cherokee Country

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