Frank45 Posted January 3, 2018 Share Posted January 3, 2018 Engine idles good until it warms up and then it skips acts like it has a cam lope in it Quote Link to comment https://www.bigmacktrucks.com/topic/52119-troubleshooting-rough-idle-after-engine-warms-up-in-a-mack-2001-460-engine/ Share on other sites More sharing options...
Mackpro Posted January 4, 2018 Share Posted January 4, 2018 We had lots of complaints on that year model engine but mostly the 427. Whole engine shakes at idle , but rev it up past 850 rpm and its fine and no low power complaints. Mack had a engine software update to help. Looking in my 'VMAC 3 software and data file part number" bulletin, it looks like they had a service file for " Misfire/white smoke" for your truck. Whats the model and last 6 of your VIN and I can check and see its its been installed. Quote Link to comment https://www.bigmacktrucks.com/topic/52119-troubleshooting-rough-idle-after-engine-warms-up-in-a-mack-2001-460-engine/#findComment-388969 Share on other sites More sharing options...
Vision 618 Posted February 10, 2020 Share Posted February 10, 2020 (edited) On 1/4/2018 at 9:04 AM, Mackpro said: We had lots of complaints on that year model engine but mostly the 427. Whole engine shakes at idle , but rev it up past 850 rpm and its fine and no low power complaints. Mack had a engine software update to help. Looking in my 'VMAC 3 software and data file part number" bulletin, it looks like they had a service file for " Misfire/white smoke" for your truck. Whats the model and last 6 of your VIN and I can check and see its its been installed. I know it's been a couple of years but I have the same problem on a 2000 E7-460. Runs perfect at startup but after warm up and driving it has a misfire at idle and pops smoke. No smoke when driving other than when grabbing gears. Cx613 last 8 of vin yw005685 if you wouldn't mind looking to see if it's been updated? Greatly appreciate it! Edited February 10, 2020 by Vision 618 Quote Link to comment https://www.bigmacktrucks.com/topic/52119-troubleshooting-rough-idle-after-engine-warms-up-in-a-mack-2001-460-engine/#findComment-442349 Share on other sites More sharing options...
Mackpro Posted March 4, 2020 Share Posted March 4, 2020 Sorry for the delay, I lost my log on and password info and finally found it to log on . I’ll try to answer your question asap Quote Link to comment https://www.bigmacktrucks.com/topic/52119-troubleshooting-rough-idle-after-engine-warms-up-in-a-mack-2001-460-engine/#findComment-444383 Share on other sites More sharing options...
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