ChrisPerna Posted August 31, 2010 Share Posted August 31, 2010 so i have a cel and it comes up egr system, could that make my mpg be horrible? also what is a common fix for that code? all the vacuum lines are good so thats not it, any other ideas? Link to comment Share on other sites More sharing options...
zelix Posted September 1, 2010 Share Posted September 1, 2010 so i have a cel and it comes up egr system, could that make my mpg be horrible? also what is a common fix for that code? all the vacuum lines are good so thats not it, any other ideas? egr function? would also like to know then Link to comment Share on other sites More sharing options...
5523Pathfinder Posted September 1, 2010 Share Posted September 1, 2010 A EGR system failure might hurt your Mpgs. If its stuck open a bit, this may cause a lack of power. The EGR system should only work when at "cruise". Typical failures are usually leaks. In the system, right next to the EGR valve, is the BPT valve. There is a small rubber hose under it that will rot out. Also, you can manually check the EGR valve by pressing up on the diaphram, while its running, and it should slightly stall. Do a quick inspection and see what you find. Link to comment Share on other sites More sharing options...
ChrisPerna Posted September 2, 2010 Author Share Posted September 2, 2010 (edited) i have done that test and it is not open at all, i am going crazy because im not liking these 8 mpgs. Edited September 2, 2010 by ChrisPerna Link to comment Share on other sites More sharing options...
silverton Posted September 2, 2010 Share Posted September 2, 2010 less skinny pedal. Link to comment Share on other sites More sharing options...
Kingman Posted September 2, 2010 Share Posted September 2, 2010 The EGR valve will have very little effect on fuel mileage. Link to comment Share on other sites More sharing options...
Precise1 Posted September 3, 2010 Share Posted September 3, 2010 I'm thinking O2 sensor, MAF wiring or Engine temp sensor, but you need to get that code cleared before you want to check again... B Link to comment Share on other sites More sharing options...
5523Pathfinder Posted September 3, 2010 Share Posted September 3, 2010 The EGR valve will have very little effect on fuel mileage. Wrong. If if stuck open, even a little bit, it will change the air/fuel mixture quite a bit. The O2 sensor will detect too much oxygen, and richen the mixture, causing poor fuel mileage. Link to comment Share on other sites More sharing options...
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