I'm chasing a poor fuel economy issue with my daughters 03 Escape. Engine has 71,000 KMs and runs well with no CEL. Fuel consumption is about 17L per 100KMs
So far I have replaced the air filter, and fuel filter, and cleaned MAF sensor to no avail. I pulled the spark plugs and they were gaped to .060 so I gaped the to .054 Plugs looked good and had good color. They were NGK single plats, so I assume someone has already replaced these plugs, as Motorcraft should have been factory.
I want to ensure the EGR works, so applied vacuum to the valve, and I could hear it move with a click noise. The vacuum line to the EGR is ported, and when I hooked a vac gauge to the line going to the EGR, I was only able to get a blip on the gauge when I revved the engine, then it went back to zero vacuum. I assume the ECM will call for the EGR to open when the engine is revved?? I am convinced the valve works, but not sure if it is getting vacuum when it should. There is some type of solenoid that controls the vac to the EGR.
Can I test that by applying 12V?
So far I have replaced the air filter, and fuel filter, and cleaned MAF sensor to no avail. I pulled the spark plugs and they were gaped to .060 so I gaped the to .054 Plugs looked good and had good color. They were NGK single plats, so I assume someone has already replaced these plugs, as Motorcraft should have been factory.
I want to ensure the EGR works, so applied vacuum to the valve, and I could hear it move with a click noise. The vacuum line to the EGR is ported, and when I hooked a vac gauge to the line going to the EGR, I was only able to get a blip on the gauge when I revved the engine, then it went back to zero vacuum. I assume the ECM will call for the EGR to open when the engine is revved?? I am convinced the valve works, but not sure if it is getting vacuum when it should. There is some type of solenoid that controls the vac to the EGR.
Can I test that by applying 12V?
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