bubbamobilin Posted April 23, 2011 Share Posted April 23, 2011 Has anyone ever changed a truck with a VMAC injection pump to a mechanical pump? I have a '96 CH with a E7 427 and VMAC II system that I would like to convert to a mechanical system. I have several spare mechanical Bosch injection pumps. Someone told me I would have problems with the instrument panel, that once I disconnected the VMAC computer none of the guages would work. Is this true? Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/ Share on other sites More sharing options...
GearheadGrrrl Posted April 23, 2011 Share Posted April 23, 2011 Why?I never had any problems with the early V-Mac systems- they cold start better than the mechanical engines and give you cruise control to boot. Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-76550 Share on other sites More sharing options...
rhasler Posted April 23, 2011 Share Posted April 23, 2011 Why?I never had any problems with the early V-Mac systems- they cold start better than the mechanical engines and give you cruise control to boot.Because a new Econovance will cost you $3900.00! Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-76555 Share on other sites More sharing options...
bubbamobilin Posted April 24, 2011 Author Share Posted April 24, 2011 Why?I never had any problems with the early V-Mac systems- they cold start better than the mechanical engines and give you cruise control to boot.I don't want to invest in the tools to read codes and I sure don't want to go to the Mack store every time the malfunction/shutdown lights come on. We got rid of most of our computer trucks with the exception of 1 '98 with a ETech. The rest are E7 and E9's, all mechanical. Duct tape and baling twine will get em home. Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-76565 Share on other sites More sharing options...
mackcl96 Posted April 24, 2011 Share Posted April 24, 2011 Add me to this curiosity list,,,,,Had this thought in the back of my head for years,when my pumpguy told me we cant get much more out of this pump,, because of the computer wont let the truck start.Could you leave the computer and close the loop at the pump and rewire the Jake like a mechanical?? Quote Thanks for hearing me out.You can have the soap box now---------JIM Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-76583 Share on other sites More sharing options...
Dirtymilkman Posted September 21, 2013 Share Posted September 21, 2013 Why? Why? Why? I wish the current macks could go back to vmacII. Reliable, easy starting, cruise control and you don't need a code reader. We have had them with over a million miles untouched. Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-207527 Share on other sites More sharing options...
staxx Posted September 21, 2013 Share Posted September 21, 2013 Why do you need a new econovance , they are rebuild able . There only 2 seals and a spring that need to be replaced and I have only seen one or two that really needed a rebuild. Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-207529 Share on other sites More sharing options...
staxx Posted September 21, 2013 Share Posted September 21, 2013 If you do a search there is a pretty good discussion on this somewhere on bmt. I did do this swap once before but it was a long time ago , it can be done. Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-207530 Share on other sites More sharing options...
superliner237 Posted September 26, 2013 Share Posted September 26, 2013 Has anyone ever changed a truck with a VMAC injection pump to a mechanical pump? I have a '96 CH with a E7 427 and VMAC II system that I would like to convert to a mechanical system. I have several spare mechanical Bosch injection pumps. Someone told me I would have problems with the instrument panel, that once I disconnected the VMAC computer none of the guages would work. Is this trueA guy i met last year did this to his superliner. He told me that he took off the pump, econovance, and the inj. lines. left the same injectors in . put on the mann. pump with the mann. inj. lines and that was about it 4 the tricky stuff. told me the inj. lines had to be changed because the v-mac setup withe econo vance has all shorter inj.lines. thats what i believe 2 b true. i dont think this guy was feeding b.s. seemed like a good ol mack guy to me. Quote Link to comment https://www.bigmacktrucks.com/topic/18814-vmac-to-mechanical/#findComment-208480 Share on other sites More sharing options...
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