Skip the auto shop - Our mechanics make house calls

Q: egr valve

asked by on

Can a car run without an egr valve and if so should it run like crap

My car has 200 miles.
My car has an automatic transmission.

A: The first EGR system was installed on cars ...

The first EGR system was installed on cars starting in the early 70's. The engines before this did not have one and the emissions of NOX was high. The EGR system helped to reduce the output of NOX and allowed the ignition timing to be increased. Your engine if equipped with an EGR valve can run without the valve but may cause the engine to have pre-ignition pinging that could lead to holes burned in the pistons or spark plugs getting melted. You would need to lower the ignition timing until no pre-ignition is happening. The lower ignition timing will cause loss of some power, higher fuel consumption, lower idle, hesitations and surges. Also modification of emission components or removal is illegal,

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car is racing in park

Hey there. This is usually a sign of a vacuum leak or a faulty or dirty idle air control valve. The idle air control valve is a unit that reads the air coming into the motor as it is mixed...

Q: Cracking/Squeaking sound when turning or braking

It is possible that you may have a ball joint that has dried out or maybe did not quite have enough grease in it when the lift kit was installed. I would recommend enlisting the assistance of a qualified technician...

Q: Does not go into gear. 2002 Dodge Stratus

Hello. Code P0403 is the trouble code for an issue with the vehicle's EGR circuit. The EGR, short for exhaust gas re circulation, circuit is an emissions system that is responsible for recirculating exhaust gases in order to reduce N0x...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.