Moparmike Posted March 23, 2018 Share Posted March 23, 2018 (edited) Any help with this please..light comes on for a few then goes off .. Edited March 23, 2018 by Moparmike Quote Link to comment Share on other sites More sharing options...
Ezrider Posted March 23, 2018 Share Posted March 23, 2018 8-1 should be a code for eup cyl 1 assuming the blink codes are the same for your year mack as what mine is. Quote Link to comment Share on other sites More sharing options...
Moparmike Posted March 23, 2018 Author Share Posted March 23, 2018 Ok what's that not being funny I have no idea lol..also would this make the truck idle low burn a little more fuel them normally..my other Mack e7 400hp 8ll gets bout 6.5mpg this truck e7 300hp auto gets bout 5.5mpg and idles at 450 instead of the 650 the engine tag says ..450 is kinda rough 650 smooth..is there away to turn the idle up with hooking it up to the computer..thanks sorry for all the questions jyst looking to get this truck inline Quote Link to comment Share on other sites More sharing options...
fjh Posted March 23, 2018 Share Posted March 23, 2018 (edited) Unfortunately if the truck has an allision you will have to have the idle set AT a mack shop If you have a clutch heres a trick! you are already at base idle how ever ! Have the cruise switch off. The turn the cruise switch on, off, on, off, on off. Then you use the resume switch to set the hard idle wherever you want it. Then step on the clutch that will set the base idle where ever you wish with in reason! Just a Note if the truck is an auto have the shop turn off set IDLE with switches after they have set it to your preferred RPM this will make it so default idle dosent happen again accidentally as shown in the above direction! three times on/ off = DEFAULT idle Edited March 23, 2018 by fjh Quote Link to comment Share on other sites More sharing options...
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