Thomas785 Posted October 12, 2022 Report Share Posted October 12, 2022 Hi Everyone. Im Thomas. Just bought a higher mileage(295k) 2005 Freightliner M2 Sportchassis with the cat c7. I know the miles are high but it was a fairly good deal and it wont get a ton of use(under 5k miles a year). It made the 9 hour drive, 500+ miles, home without a hiccup luckily but of course some issues werent disclosed to me before flying up. When I got there to pick it up the seller said the cruise control doesnt work and if you do try it the check engine light flashes, I did try it and that is what happened, shut off and restart and flashing check engine light stopped. Also that the rear bags will deflate overnight. While driving home I noticed the air gauge keep going from about 125 psi down to 100 psi and fill back up about every 3 minutes/3 miles while on the highway. I do hear alot of air leaking after parking and turning off the truck and dont think that is normal. If sitting awhile like overnight the air gauge shows barely any pressure when first starting up. Brought it to a local shop and they couldnt find a leak. Their bigger truck mechanic was and will be out on vacation for the next week but they did scan the truck for me for now, had alot of codes. Im not sure if those codes werent cleared after some repairs the truck had last week or are still things that need attention. Previous owner couldnt verify. Last week the previous owner per the receipt replaced the Fuel Rail Sensor and "R&R Oil Manifold-Oring-Power steering gasket". Not sure if any codes to that were cleared but these are the codes that came up yesterday at my shop 102-7 Boost Pressure Not Responding 231-12 SAE J1939 Device Not Responding 102-1 Low Boost Pressure (25) 94-11 Low Cranking Fuel Pressure (63) 108-3 Barometric Pressure (BP) Voltage high (26) Any tips of what these codes could mean? Any ideas on the cruise control? How bad does the air leak sound? this is the first bigger truck ive had so not sure what is normal and what isnt with the air. I am upgrading from a Ram 2500. Quote Link to comment Share on other sites More sharing options...
ms60ocb Posted October 20, 2022 Report Share Posted October 20, 2022 Does this Truck have Hydraulic or Air brakes? I had problem of excessive air leakage that a service could find. A second shop found one of the two small cab bags was leaking. Get your window cleaner spray bottle and crawl under. I had a seat that leaked air only one was setting on the seat, a length of seat air hose was to short stressing the connector connection Yes you have an excessive air leak(s). The rear air bags could be one of several problems and the rear air bags could a check valve. Clay I just sold my 2015 M2-106 last month Quote Clay & Marcie Too old to play in the snow Diesel pusher and previously 2 FW and small Class C Link to comment Share on other sites More sharing options...
rickeieio Posted October 21, 2022 Report Share Posted October 21, 2022 Air systems leak. That's just how it is. Older trucks leak worse, but you can track them down and correct them. Kid's bubble blowing solution is great for finding them. So is a length of hose, one end held to your ear and the other end, moved slowly in the suspected area of the leak. Old tech, but it works. Your truck is of the age where there can be a lot of potential leaks, mostly cheap. Air bags, while sounding intimidating, are pretty simple to change. Don't just put off fixing leaks, A new compressor is pricey. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
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