Zeuz Posted April 22, 2022 Share Posted April 22, 2022 (edited) I Have a 2016 Mack with a MDrive. The truck recently wouldnt start..then when it started it wouldn't idle it would shut off..I had the computer taken off I took it and got cleared.and programmed .I test drove it and it won't ride no more then 50 miles loaded..the mechanic said it was the crankcase filter housing ..I spent 900 dollars and replaced it..still doing the se thing doesn't have power to go over 50..it just stays there with the pedal to the floor..I don't know what else to do..it does have the def eliminated I bought truck like that..anyone knows what I should do..bobtail it will run 70 plus but with a trailer falls on it's face ..need help thank you Edited April 22, 2022 by Zeuz No edit Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/ Share on other sites More sharing options...
fjh Posted April 23, 2022 Share Posted April 23, 2022 Bro if your Truck is deleted we can't help Much! Could be anything! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-495926 Share on other sites More sharing options...
Zeuz Posted April 23, 2022 Author Share Posted April 23, 2022 33 minutes ago, fjh said: Bro if your Truck is deleted we can't help Much! Could be anything! I know..we drove it today and can get to 11th gear at 1300 rpm 56 mph and won't go anymore... Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-495930 Share on other sites More sharing options...
Zeuz Posted April 23, 2022 Author Share Posted April 23, 2022 I'm getting 34 pounds of boost in 11 th gear at 1400 rpm..but won't go past 50 to 55 mph .....someone told me it could be the torque converter..it's a MDrive transmission 12 speed that's in truck..at this point I don't know Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-495935 Share on other sites More sharing options...
Zeuz Posted April 27, 2022 Author Share Posted April 27, 2022 The mechanic put the scanner on truck and transmission..there's no codes .he hooked up a empty trailer to the semi and pulled it 80 plus miles .I brought the truck home hooked it up to a loaded trailer and get 50 mph and won't go no more...anyone know what I can do..thanks Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496225 Share on other sites More sharing options...
Onyx610 Posted April 27, 2022 Share Posted April 27, 2022 Who “cleared and reprogrammed” the EECU? Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496226 Share on other sites More sharing options...
Zeuz Posted April 27, 2022 Author Share Posted April 27, 2022 8 minutes ago, Onyx610 said: Who “cleared and reprogrammed” the EECU? The same shop who deleted it programmed it.....this shop deleted the truck a year ago and it did the same thing no power at 50mph but the programmed it a got it right......now a year later doing the same thing but the can't get going ..they tried everything...so I took it to another place and they telling me they don't see anything wrong with the program..so I don't know Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496230 Share on other sites More sharing options...
Onyx610 Posted April 27, 2022 Share Posted April 27, 2022 (edited) Why would anyone just delete the DEF? Anyway my suggestion is gonna be buy what you need to get it back to factory so a dealership can work on it. Your gonna spend more money throwing parts at it trying to figure out what it is. This is an issue that won’t be diagnosed over the internet. This is just my opinion. I wish I could help. Edited April 27, 2022 by Onyx610 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496236 Share on other sites More sharing options...
Onyx610 Posted April 27, 2022 Share Posted April 27, 2022 Who knows what that “programming” is on the truck. That’s probably your issue. Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496237 Share on other sites More sharing options...
Zeuz Posted April 28, 2022 Author Share Posted April 28, 2022 8 minutes ago, Onyx610 said: Who knows what that “programming” is on the truck. That’s probably your issue. Thank you Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496238 Share on other sites More sharing options...
Popular Post Onyx610 Posted April 28, 2022 Popular Post Share Posted April 28, 2022 Let us know what you end up doing, I am curious. There’s just soooo many variables with your issue. 1 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496246 Share on other sites More sharing options...
Zeuz Posted April 28, 2022 Author Share Posted April 28, 2022 22 hours ago, Onyx610 said: Let us know what you end up doing, I am curious. There’s just soooo many variables with your issue. I hooked up a loaded trailer today and it ran 55 plus mph..got to 11 th gear wouldn't got into 12 th.with the pedal all the way down the transmission started to slip a little so I'm figuring the transmission by slipping it's not letting get up in speed...Mack quoted me $32,000 for a new MDrive 12 speed,or 11,500 for reman plus 2400 labor..I'm going to pull the transmission out and put a 10 speed manual.getting away from aotomatic..too much money.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496304 Share on other sites More sharing options...
Onyx610 Posted April 28, 2022 Share Posted April 28, 2022 That makes a lot of sense, those transmissions are shit. What kind of work is involved in changing over to a manual trans? Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496305 Share on other sites More sharing options...
Zeuz Posted April 29, 2022 Author Share Posted April 29, 2022 10 minutes ago, Onyx610 said: That makes a lot of sense, those transmissions are shit. What kind of work is involved in changing over to a manual trans? I'm having a guy to do it ..he told me $2,500 for transmission with pedal,and everything needed around 4,000 to ,4,500 ...so I'm thinking I will have around 6,000 with everything..installed ready to go...I average 750 miles a day pulling 88,000 so I need it to last... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496307 Share on other sites More sharing options...
Onyx610 Posted April 29, 2022 Share Posted April 29, 2022 Good luck hope it all works out for you, post some pics when it’s done. Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496308 Share on other sites More sharing options...
Zeuz Posted April 29, 2022 Author Share Posted April 29, 2022 15 minutes ago, Onyx610 said: Good luck hope it all works out for you, post some pics when it’s done. I will Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496309 Share on other sites More sharing options...
Joey Mack Posted April 29, 2022 Share Posted April 29, 2022 its sh!t like this that chaps my A$$ !!! M-Drive is f'n junk... period... my wife was a service writer at Our local Mack dealer 4+ years ago and she said that Hilco Transport would request a new tranny under warranty and it was still 13K , no warranty, the cost was around 16K .. for a re-man.. Mack pro? can you confirm my wifes memory... its been a while.. I hope my E-7/ E-Tech rebuilding plan pulls through.. I wish I had tranny tools, but its hard to beat "Overdrive rebuilders" in my area... jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-496314 Share on other sites More sharing options...
Popular Post Zeuz Posted May 23, 2022 Author Popular Post Share Posted May 23, 2022 On 4/28/2022 at 8:26 PM, Onyx610 said: Good luck hope it all works out for you, post some pics when it’s done. I took the truck to the Mack dealer ship..they put a new clutch,flywheel,clutch actuator ,clutch valves,clutch cylinder,solenoid valve,brake switch with wire harness. 7,400.00 dollars .it now runs perfect,it will get up and go no problems at all.. 1 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-498378 Share on other sites More sharing options...
Onyx610 Posted May 24, 2022 Share Posted May 24, 2022 I wonder why they didn’t just put a new trans in? 🤷🏼 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-498387 Share on other sites More sharing options...
Zeuz Posted May 24, 2022 Author Share Posted May 24, 2022 15 hours ago, Onyx610 said: I wonder why they didn’t just put a new trans in? 🤷🏼 They wanted 10,700 for a reman transmission and 2,200 for the labor..plus at the other extra...at the dealer..I'm in Florida a place in Georgia that works on transmission only quoted me 15,000 and they would come and get the truck I had to pay for fuel only 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69589-loss-of-power-mp8/#findComment-498432 Share on other sites More sharing options...
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