Top Posters
Since Sunday
I
3
p
2
w
2
y
2
J
2
Q
2
r
2
o
2
e
2
j
2
d
2
T
2
New Topic  
wrote...
3 years ago Edited: 3 years ago, Adam638
7.   Technician A says that manually opening an exhaust gas recirculation (EGR) valve with a vacuum pump or scan tool will cause the engine to idle roughly or stall. Technician B says that blocking the EGR valve passages will have no effect on the OBD-II. Who is correct?

8.   Oxides of nitrogen (NOx) contribute to the formation of
Post Merge: 3 years ago

7.   Technician A says that manually opening an exhaust gas recirculation (EGR) valve with a vacuum pump or scan tool will cause the engine to idle roughly or stall. Technician B says that blocking the EGR valve passages will have no effect on the OBD-II. Who is correct?

8.   Oxides of nitrogen (NOx) contribute to the formation of
wrote...
Educator
3 years ago
7.   Technician A says that manually opening an exhaust gas recirculation (EGR) valve with a vacuum pump or scan tool will cause the engine to idle roughly or stall. Technician B says that blocking the EGR valve passages will have no effect on the OBD-II. Who is correct?

Technician A is correct.

Opening the exhaust gas recirculation (EGR) valve manually with a vacuum pump cause the engine to roughly idle or stall. This is because the exhaust gas is recirculated to the engine intake valve and improve the performance by exchanging heat with the fresh air.

The statement of technician A is correct. While the technician B statement says incorrect. The blocking of EGR valve passages causes problems in the engine performance. This is also diagnosed on the OBD-II.

Please start a new topic if you'd like to see the next question answer Slight Smile
  New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1830 People Browsing
 113 Signed Up Today
Related Images
  
 266
  
 382
  
 345
Your Opinion
How often do you eat-out per week?
Votes: 81

Previous poll results: Who's your favorite biologist?