truck675 Posted November 4, 2012 Share Posted November 4, 2012 Hi !I can a lot of problem engine AC-460. When I move, the engine suddenly lost power. Rpm do not rise over 1200. If you increase the engine starts to shake. After some time, the problem goes away.I live in Russia. We do not diagnose Mack.I am sorry for bad English. Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/ Share on other sites More sharing options...
staxx Posted November 4, 2012 Share Posted November 4, 2012 Sounds like low fuel pressure , need to check fuel pressure or remove inspect the supply pump these are bad about failing the gear breaks loose on shaft . Welcome to BMT my freind from the far east. Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144434 Share on other sites More sharing options...
rsb502 Posted November 4, 2012 Share Posted November 4, 2012 Hi !I can a lot of problem engine AC-460. When I move, the engine suddenly lost power. Rpm do not rise over 1200. If you increase the engine starts to shake. After some time, the problem goes away.I live in Russia. We do not diagnose Mack.I am sorry for bad English.While I agree with Staxx also remember its cold there, and those trucks dont like water in the fuel or fule line restriction of any kind, how often do you change your fuel filters? does the issue go away when the engine warms up and sends return fuel to the tank to also warm the fuel and filters? Might be a simple fuel filter swap and adding a water dispersant to the fuel tanks, just a thought. Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144451 Share on other sites More sharing options...
truck675 Posted November 4, 2012 Author Share Posted November 4, 2012 Hi guys! Thank you for the answers. The problem has existed for more than a year. Replaced the entire fuel line. Checked everything that can be verified.If the fuel pump is faulty, the problem would stop. But the problem appears and disappears by itself. Can five to six times per trip, and maybe never. Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144495 Share on other sites More sharing options...
truck675 Posted November 5, 2012 Author Share Posted November 5, 2012 Generated an error 25, 26, 36. What is it? Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144598 Share on other sites More sharing options...
truck675 Posted November 5, 2012 Author Share Posted November 5, 2012 ...or 2-5, 2-6, 3-6? I dont know. Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144606 Share on other sites More sharing options...
staxx Posted November 5, 2012 Share Posted November 5, 2012 2-5 front drive axle temp senor ,2-6 rear drive axle temp sensor Dont rember 36 have you checked the low coolant sensor in upper coolant reservoir check the plug connection if it has coolant in it go unplug the engine module connections and make coolant is not in ecu connections. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144625 Share on other sites More sharing options...
truck675 Posted November 5, 2012 Author Share Posted November 5, 2012 2-5 front drive axle temp senor ,2-6 rear drive axle temp sensor Dont rember 36 have you checked the low coolant sensor in upper coolant reservoir check the plug connection if it has coolant in it go unplug the engine module connections and make coolant is not in ecu connections.Thank you ! These errors can not affect the power loss.Another is activated clutch cooling and during the motor can not collect more than 1200 RPM. So move off until the clutch cooling. After it has everything works fine. Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144635 Share on other sites More sharing options...
truck675 Posted November 5, 2012 Author Share Posted November 5, 2012 This is my truck: 1 Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144636 Share on other sites More sharing options...
thomastractorsvc Posted November 5, 2012 Share Posted November 5, 2012 nice looking log hauler 1 Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144637 Share on other sites More sharing options...
staxx Posted November 5, 2012 Share Posted November 5, 2012 Dam that looks way too cold for me 1 Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144640 Share on other sites More sharing options...
farmer52 Posted November 5, 2012 Share Posted November 5, 2012 Dam that looks way too cold for meX2....not looking forward to winter and that pic confirms. BTW, nice truck! 1 Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144665 Share on other sites More sharing options...
rsb502 Posted November 5, 2012 Share Posted November 5, 2012 Thank you !These errors can not affect the power loss.Another is activated clutch cooling and during the motor can not collect more than 1200 RPM. So move off until the clutch cooling. After it has everything works fine.the low coolant sensor can affect power loss it will make the engine go into derate if it trips a code. 1 Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-144693 Share on other sites More sharing options...
truck675 Posted December 9, 2012 Author Share Posted December 9, 2012 Hi guys! Error 6 4 that mean? Quote Link to comment https://www.bigmacktrucks.com/topic/28143-low-power-ac-460/#findComment-150274 Share on other sites More sharing options...
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