Can a bad EGR valve cause poor acceleration?
Answer: The EGR could be stuck open. If the engine is fed exhaust fumes continuously, this can overheat the valve, cause poor acceleration. Check the EGR system and see if a bad vacuum solenoid is keeping the valve opened. Check the control circuit as well.
What causes a rough idle on an EGR valve?
A rough idle may be caused by a faulty ignition coil, a vacuum leak, or an ignition system problem. So before spending money and replacing parts, troubleshoot the EGR valve and other system components to try to narrow down the problem.
Where is the vacuum diaphragm on an EGR valve?
The hose connects the top of the valve to the throttle body or carburetor. The valve’s metal disk houses a vacuum diaphragm, spring, and plunger. Later models come equipped with electronic-vacuum EGR valves inside a small block or cylinder.
What to do if your EGR valve is leaking?
Answer: The EGR valve gasket is probably leaking, allowing exhaust fumes to escape. Remove the valve, clean buildup around the valve and passages, if any, and replace the gasket. Remove the valve, clean buildup around the valve and passages, if any, and replace the gasket.
How do you clean the EGR valve on a Honda Accord?
Remove the two mounting nuts for the EGR. Flip the unit over and attach it to a vacuum pump. While its valve is open, spray some carb cleaner inside. Figure 10. Clean the EGR valve. Install the gasket for the EGR valve and tighten the nuts. Clean off the fuel injector ends and re-install the rail onto the manifold.
What happens when the EGR port is clogged on a Honda Accord?
When the ports become clogged, the engine can experience several different problems including stalling, bogging, poor fuel economy and hesitant acceleration. To fix the problem, the carbon deposits have to be removed from the manifold. This article explains how to safely remove carbon deposits from a Honda Accord.
Answer: The EGR could be stuck open. If the engine is fed exhaust fumes continuously, this can overheat the valve, cause poor acceleration. Check the EGR system and see if a bad vacuum solenoid is keeping the valve opened. Check the control circuit as well.
The hose connects the top of the valve to the throttle body or carburetor. The valve’s metal disk houses a vacuum diaphragm, spring, and plunger. Later models come equipped with electronic-vacuum EGR valves inside a small block or cylinder.
Where are the EGR Jets in the intake manifold?
A more radical design, implemented in a few models, was the replacement of the valve with EGR jets at the bottom of the intake manifold. Some newer high-efficiency engines, for example those with variable valve timing (VVT), don’t even use an EGR system. If playback doesn’t begin shortly, try restarting your device.
Why does my car hesitate when I step on the accelerator?
Instead of going faster by stepping on the accelerator pedal, the speed will be reduced. The vehicle may even stumble entirely during these seconds. This is what it means when the car engine hesitates. It is usually the result of a problem with the air and fuel mixture within the combustion chamber.
Can a bad EGR valve cause other problems?
But before you start replacing parts, keep in mind that the same engine performance problems that indicate a bad EGR valve can also indicate problems in other parts of the system. If you don’t do your troubleshooting, you may end up replacing parts unnecessarily and wasting time and money.
A more radical design, implemented in a few models, was the replacement of the valve with EGR jets at the bottom of the intake manifold. Some newer high-efficiency engines, for example those with variable valve timing (VVT), don’t even use an EGR system. If playback doesn’t begin shortly, try restarting your device.
What does it mean when a car engine hesitates?
This is what it means when the car engine hesitates. It is usually the result of a problem with the air and fuel mixture within the combustion chamber. However, there is a long list of other reasons which could be the cause of this hesitation problem too.
Where is the OBD plug-in on a 92 B2600i pick up?
Mazda b2600i: where is the OBD plug-in on a 92 b2600i pick… where is the OBD plug-in… where is the OBD plug-in on a 92 b2600i pick-up Show More Show Less Ask Your Own Mazda Question Share this conversation Answered in 3 minutes by: 9/4/2012 Mazda Mechanic: Ron Z., – Mazda Tech – replied 8 years ago Ron Z., – Mazda Tech – Category: Mazda
Mazda b2600i: where is the OBD plug-in on a 92 b2600i pick… where is the OBD plug-in… where is the OBD plug-in on a 92 b2600i pick-up Show More Show Less Ask Your Own Mazda Question Share this conversation Answered in 3 minutes by: 9/4/2012 Mazda Mechanic: Ron Z., – Mazda Tech – replied 8 years ago Ron Z., – Mazda Tech – Category: Mazda
Why does my 92 Mazda B2600i run rough?
My 92 Mazda B2600i 4×4 manual runs rough until you hit a higher rpms just had the timing done and new fuel filter and fuel pumps, any help would be great … read more Pete Automotive Diagnostic Specialist
What are the symptoms of a bad EGR vacuum modulator?
Any issues with it can cause the system to malfunction, which can lead to increased emissions and other problems. Usually a bad or failing EGR vacuum modulator will produce a few symptoms that can alert the driver of a potential problem that should be serviced.
What can I use to clean an EGR valve?
This is a home experiment and an unbiased use of JLM Diesel Air Intake & EGR Cleaner. Similar products are available. This product is designed to dissolve carbon deposits, gum and varnish build up. It should restore air flow to the engine thus improving power and acceleration while reducing exhaust smoke.
Do you need vacuum pump to test EGR valve?
Still, you can follow this guide along with the procedure described in your vehicle manual to test your EGR valve, if necessary. To apply one of the tests to the EGR valve, you’ll need a vacuum pump, which you can borrow-rent from a local auto parts store, if you don’t have one.
How to test an EGR valve with a hand mirror?
As you do this, watch the valve diaphragm movement. Use a small hand mirror for this, if necessary. If the stem or diaphragm doesn’t move, disconnect the thin vacuum hose from the top of the valve. Place your finger on the opening of the vacuum hose you just disconnected. Increase engine rpm again as you did in the previous step.
Why is my exhaust gas recirculation valve not working?
After miles of service, the exhaust gas recirculation (EGR) system — especially the EGR valve — will lead to engine performance problems due to carbon buildup, components mechanical problems, or vacuum hose leaks.
How can you tell the GM EGR valve apart?
General Motors has used different types of electronic EGR valves and this article focuses on the Linear EGR valve from the mid 90’s to the early 2000’s. How can you tell them apart? By looking at the base of the EGR valve. To illustrate this, look at photo 3 of 4 and photo 4 of 4 in the image viewer above.
How to test the GM EGR valve-Buick, Olds, Olds?
By looking at the base of the EGR valve. To illustrate this, look at photo 3 of 4 and photo 4 of 4 in the image viewer above. The EGR valve in photo 3 of 4 (with the red X) is not covered by this article and is tested differently. The EGR valve in photo 4 of 4 (with the GREEN check mark) is the one covered by this article.
What kind of power source does the EGR valve use?
5 Volt Reference (provided by the PCM). 12 Volt Power Source. The color of the wires is not important as long as you identify the wire (circuit) by its letter designation. Also, the EGR valve on your vehicle might have its connector connecting to it at a 90 degree angle or connecting straight down onto the EGR valve.