Volvo EGR valve replacement
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Volvo EGR valve replacement
Does the EGR Valve on My Volvo Need Replacing?
The exhaust gas recirculation (EGR) valve recirculates a portion of the exhaust gas that would normally go through your Volvo's exhaust system and mixes it in with the fresh air inside the intake manifold. These gases are then burned off as they pass back through the combustion process.
Reducing the volume of emissions going through an exhaust system lengthens the life of a catalytic converter and helps the environment, and most modern Volvo's have either an external or internal EGR valve.
The EGR valve is a vacuum or electric-controlled unit that is bolted onto the engine. Exhaust gases travel through pipes entering one port of the EGR and then exit out another port into the intake manifold.
On an internal EGR, various methods are utilised to recirculate the exhaust gases to be part of the combustion process.
An EGR valve can fail when it loses vacuum, the diaphragm is perforated, it is full of gunk, or the valve gets stuck open. When this happens the EGR valve will need to be replaced. With electric EGR valves, the problem could be an issue with the wiring.
Symptoms of a faulty EGR:
- Scan tool shows EGR error code
- Service engine light on
- Engine misfire
- Engine vibration
When your EGR valve fails, the check engine warning light will usually illuminate on the dash and your Volvo may run rough. The engine may run lean or rich, depending on why the valve has failed.
If left for too long a faulty EGR valve can lead to permanent engine damage. Best to get it replaced as soon as possible to avoid further complications and expenses.
You may also want to consider periodic carbon cleaning of the EGR valve. If cleaning is not an option, it will need to be replaced.
If your looking for a top mechanic to replace your Volvo EGR valve book the best through AutoGuru.
Volvo Models
- Volvo 142
- Volvo 144
- Volvo 145
- Volvo 164
- Volvo 240
- Volvo 242
- Volvo 244
- Volvo 245
- Volvo 262
- Volvo 264
- Volvo 265
- Volvo 360
- Volvo 440
- Volvo 460
- Volvo 480
- Volvo 740
- Volvo 760
- Volvo 850
- Volvo 940
- Volvo 960
- Volvo C30
- Volvo C70
- Volvo Cross Country
- Volvo S40
- Volvo S60
- Volvo S70
- Volvo S80
- Volvo S90
- Volvo V40
- Volvo V50
- Volvo V60
- Volvo V70
- Volvo V90
- Volvo V90 Cross Country
- Volvo XC40
- Volvo XC60
- Volvo XC70
- Volvo XC90