Skip the auto shop - Our mechanics make house calls

Q: how to tell if the egr is bad off he vehicle

asked by on

I took the egr off of my truck and I need to tell if it bad. how do I tell if it is bad while it is off the vehicle?

My car has 267000 miles.
My car has an automatic transmission.

A: Hi there. Checking the EGR (exhaust gas rec...

Hi there. Checking the EGR (exhaust gas recirculation) valve off the vehicle, using a piece of vacuum hose attached to the small vacuum nipple, apply vacuum to the diaphragm (suck on the hose) which should move the valve to the open position and it should stay open until vacuum is released. In the open position, the exhaust to intake passage should allow air to freely flow. In the closed position, the exhaust to intake passage should allow no air to flow. I recommend having your vehicle’s EGR valve be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: air conditioning is not working.

The Fixed Orifice Tube (FOT) for your vehicle should be the same for a Dodge and Chevrolet. The receiver dryer is molded onto the condenser, however, I recommend replacing the receiver dryer and the condenser as a unit rather than...

Q: Rough idle and engine misfire

Engine misfires can be caused by many different problems, but there are a few suspects that occur more than others. Generally, misfires are caused by either a spark or fuel issue or in cases, a combination of both. Spark related...

Q: Exhaust

There is always a chance if it will work as a replacement for the factory part anytime you use an aftermarket part. The exhaust catalyst on any vehicle is designed to flow a certain amount of exhaust at the same...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.