What is the function and location of the EGR valve in an engine?

The EGR system consists of exhaust gases that are metered into the intake manifold either through the manifold passages or through outside pipes, which connect the exhaust manifold to the EGR valve and the intake manifold. These exhaust gases combine with the air/fuel mixture inside the manifold. At high combustion temperatures, the dilution of the air/fuel mixture by exhaust gases lowers combustion chamber temperatures resulting in reduced levels of oxides of nitrogen (NOx) as a natural byproduct or high combustion temperatures. The PCM regulates how much exhaust gas is mixed with air/fuel mixture depending on engine operating conditions. It is also under direct control by PCM and is digitalized. This digital EGR valve meters exhaust gases into intake manifold independently from intake manifold vacuum and can better regulate it than any vacuum controlled EGR valve. A few common issues with such engines are rough idling or stalling at idle; rough engine performance during light throttle application, and stalling during deceleration. In order to check this valve, special electronic diagnostic equipment must be used; it should only be done at dealer service departments or other qualified repair facilities. This valve is located on the left end of the engine behind the throttle body. Disconnect electrical connector from EGR valve, remove two nuts for EGR valve mounting and pull out EGR valve itself to replace it . The removal process needs to be reversed during installation.

Genuine Cadillac Deville EGR Valve

Emissions EGR Valve

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21 EGR Valves found

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Cadillac Deville Regulation,Vacuum
Part Number: 1986905
$59.65 MSRP: $113.90
You Save: $54.25 (48%)
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Product Specifications
- Other Name: VALVE, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1990 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, FUNERAL COACH, LIMOUSINE 4 DOOR | 8 Cyl 4.5L
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Cadillac Deville Solenoid Asm,Evap Emission Canister
Part Number: 21994122
$31.26 MSRP: $58.99
You Save: $27.73 (48%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: VALVE, Fuel Tank Evaporator/Purge Control; Solenoid Valve, Vent Control Solenoid, Vent Valve
- Replaces: 25675824
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2005 Cadillac Deville | DEVILLE, HIGH LUXURY, SEVILLE, SLS, STS, TOURING 4 DOOR, TOURING SEDAN | 8 Cyl 4.6L
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Cadillac Deville Valve,EGR
Part Number: 12578040
$108.45 MSRP: $348.96
You Save: $240.51 (69%)
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Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve
- Replaces: 17113301, 17094028, 17113713
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995-1999 Cadillac Deville | 4 DOOR, DEVILLE, SLS, STS | 8 Cyl 4.6L
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Cadillac Deville Valve Kit,EGR
Part Number: 19210678
$44.68 MSRP: $143.74
You Save: $99.06 (69%)
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Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve
- Replaces: 17113506, 17112582
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Cadillac Deville | 4 DOOR | 8 Cyl 4.9L
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Cadillac Deville Valve Kit,EGR
Part Number: 19210671
$76.26 MSRP: $158.32
You Save: $82.06 (52%)
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Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve
- Replaces: 17112236, 17112235, 17112581, 17113378
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1993 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, TOURING 4 DOOR | 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Deville Valve Asm,EGR Solenoid
Part Number: 1997140
Product Specifications
- Other Name: VALVE, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1987 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 8 Cyl 4.1L
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Cadillac Deville Valve,EGR
Part Number: 12576918
Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve, Throttle Position Sensor
- Replaces: 12568582, 17113618, 17113303, 17113615, 17093020, 17113619, 17096188, 17113405, 17113575, 17113278
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Cadillac Deville | DEVILLE, FUNERAL COACH, HIGH LUXURY, LIMOUSINE, SEVILLE, SLS, STS, TOURING 4 DOOR, TOURING SEDAN | 8 Cyl 4.6L
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Cadillac Deville Valve Asm
Part Number: 1997202
Product Specifications
- Other Name: VALVE, Emission Control System; Solenoid
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1995 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, CONVERSION, TOURING 4 DOOR | 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Deville VALVE, Emission Control System
Part Number: 17085027
Product Specifications
- Other Name: EGR, EGR Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 6 Cyl 4.3L Diesel
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Cadillac Deville Valve, Evap Emission Canister Vent Solenoid
Part Number: 25669529
Product Specifications
- Other Name: VALVE, Fuel Tank Evaporator/Purge Control; Purge Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 Cadillac Deville | 4 DOOR, DEVILLE | 8 Cyl 4.6L
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Cadillac Deville Valve Asm,EGR Solenoid
Part Number: 1997499
Product Specifications
- Other Name: VALVE, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE
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Cadillac Deville Valve Asm,EGR
Part Number: 17113427
Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve
- Replaces: 17110461
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1987 Cadillac Deville | 2 DOOR, 4 DOOR, 60 SPECIAL 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 8 Cyl 4.1L
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Cadillac Deville Valve Asm,EGR
Part Number: 17110483
Product Specifications
- Other Name: VALVE, Egr; EGR Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR | 6 Cyl 4.1L
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Cadillac Deville Valve Asm,EGR
Part Number: 17113465
Product Specifications
- Other Name: VALVE, Egr
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR | 6 Cyl 4.1L
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Cadillac Deville Valve Assembly, Egr & Efe Solenoid
Part Number: 1997542
Product Specifications
- Other Name: VALVE
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR | 6 Cyl 4.1L
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Cadillac Deville Valve Asm,EGR
Part Number: 17113425
Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve
- Replaces: 17110592, 17110460, 17110458
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE | 8 Cyl 4.1L
View related parts
Cadillac Deville Valve Kit,EGR
Part Number: 17113424
Product Specifications
- Other Name: VALVE, Emission Control System; EGR Valve
- Replaces: 17112440, 17078411, 17110459, 17068217, 17078413, 17110457
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE | 8 Cyl 4.1L
View related parts
Cadillac Deville Valve Asm,EGR Solenoid
Part Number: 1997143
Product Specifications
- Other Name: VALVE, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1986 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR FWD, BROUGHAM 4 DOOR FWD, FUNERAL COACH, LIMOUSINE 4 DOOR, LIMOUSINE 4 DOOR CTR PART | 8 Cyl 4.1L
View related parts
Cadillac Deville Valve Asm,EGR Electronic Vacuum Regulator Solenoid
Part Number: 1997634
Product Specifications
- Other Name: VALVE, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1983 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR | 8 Cyl 4.1L
View related parts
Cadillac Deville Valve Asm,EGR Electronic Vacuum Regulator Solenoid
Part Number: 1997637
Product Specifications
- Other Name: VALVE, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Cadillac Deville | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, FORMAL LIMOUSINE, LIMOUSINE | 8 Cyl 4.1L

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Cadillac Deville EGR Valve Parts Questions & Experts Answers

Solenoid Asm,Evap Emission Canister
21994122
Q: What is the function and location of the EGR valve in an engine?
A: The EGR system consists of exhaust gases that are metered into the intake manifold either through the manifold passages or through outside pipes, which connect the exhaust manifold to the EGR valve and the intake manifold. These exhaust gases combine with the air/fuel mixture inside the manifold. At high combustion temperatures, the dilution of the air/fuel mixture by exhaust gases lowers combustion chamber temperatures resulting in reduced levels of oxides of nitrogen (NOx) as a natural byproduct or high combustion temperatures. The PCM regulates how much exhaust gas is mixed with air/fuel mixture depending on engine operating conditions. It is also under direct control by PCM and is digitalized. This digital EGR valve meters exhaust gases into intake manifold independently from intake manifold vacuum and can better regulate it than any vacuum controlled EGR valve. A few common issues with such engines are rough idling or stalling at idle; rough engine performance during light throttle application, and stalling during deceleration. In order to check this valve, special electronic diagnostic equipment must be used; it should only be done at dealer service departments or other qualified repair facilities. This valve is located on the left end of the engine behind the throttle body. Disconnect electrical connector from EGR valve, remove two nuts for EGR valve mounting and pull out EGR valve itself to replace it . The removal process needs to be reversed during installation.