cowpuncha Posted October 29, 2009 Share Posted October 29, 2009 I'm currently working on a Mack E7-300, and for some reason it has a surging idle, hot or cold, it's a V-Mack 1. The owner just replaced the throttle assembly but still no difference. Runs fine for appx. 60 second's after starting, and then begins surging. It has no active codes when i hook it up with the laptop. So i was wondering if anyone has any idea's, or has had this problem before.Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/11231-e7300-mack-surging-idle/ Share on other sites More sharing options...
fjh Posted October 30, 2009 Share Posted October 30, 2009 I'm currently working on a Mack E7-300, and for some reason it has a surging idle, hot or cold, it's a V-Mack 1. The owner just replaced the throttle assembly but still no difference. Runs fine for appx. 60 second's after starting, and then begins surging. It has no active codes when i hook it up with the laptop. So i was wondering if anyone has any idea's, or has had this problem before.Thanks.Pull the plug apart at the fuel pump and inspect it these have been known to cause greif!If you have available parts and tools replace the pins and sockets on that plug! Quote Link to comment https://www.bigmacktrucks.com/topic/11231-e7300-mack-surging-idle/#findComment-42637 Share on other sites More sharing options...
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