West Posted February 2, 2021 Share Posted February 2, 2021 I've been deleting some 04-07 mack aset engines with block off plugs and plates. Can I add resistors to the mass airflow and temp sensor to truck the system into thinking its within range to keep the light from coming on? Quote Link to comment Share on other sites More sharing options...
storkmack Posted February 3, 2021 Share Posted February 3, 2021 5 hours ago, West said: I've been deleting some 04-07 mack aset engines with block off plugs and plates. Can I add resistors to the mass airflow and temp sensor to truck the system into thinking its within range to keep the light from coming on? No experience here, but I have heard that resistors do the trick Quote Link to comment Share on other sites More sharing options...
Mackpro Posted February 3, 2021 Share Posted February 3, 2021 About 10-15 years ago I spent a lot of time trying to figure this same thing out . This was the days of many trips to Radio Shack for resistors . The temperature one was somewhat easy , I had it set to around 250 degrees. The flow meter side was a totally different thing . In the engine ecm it calculates and sets a target flow that the flow meter should be reading , if the target flow was 12 pounds and the actual flow was 2 pounds you got a fault code for low EGR flow. I believe the target and actual flow has to be within 10 pounds of each other of you got the fault code . The target flow as always changing due to engine load and rpm. I thought about putting the flow meter sensor in the aftercooler piping and seeing if it would read close enough. I lost interest and sent all my stuff on this so called EGR delete to a guy on here from up north, he was way smarter than me but I believe I gave up too after a while. Quote Link to comment Share on other sites More sharing options...
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