Flying Finn Posted June 13, 2019 Report Share Posted June 13, 2019 I have a 2001 VNL770 with a Cummins engine/auto shift trans. From time to time during acceleration from a stop or in motion all power is lost. The pedal goes to the floor and nothing. A second or two later everything is normal. I changed the fuel filter, run biocide in the fuel, nothing in the tank or filter looks out of the ordinary. The engine does not sputter, no codes show up, no unusual exhaust etc. just looses power. What could be going on? Thanks Brad Quote Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted June 13, 2019 Report Share Posted June 13, 2019 Camshaft Position sensor can present these symptoms. https://www.google.com/search?ei=I9UCXdVv0Jv9Bra6urAB&q=cummins+m11+cam+position+sensor+symptoms&oq=cummins+m11+cam+position+sensor+symp&gs_l=psy-ab.1.0.33i299.347.5131..6832...0.0..0.217.642.3j1j1......0....1..gws-wiz.......0i71j0i22i30j33i160.VPaRW82GRho Quote Alie & Jim + 8 paws 2017 DRV Memphis BART- 1998 Volvo 610 Lil'ole 6cyl Cummins Link to comment Share on other sites More sharing options...
rickeieio Posted June 13, 2019 Report Share Posted June 13, 2019 Or that magic thing hooked to the pedal, Potentiameter? (sp?) Sounds like an electrical problem. 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...
Darryl&Rita Posted June 14, 2019 Report Share Posted June 14, 2019 Cummins have a propensity to eat CPS, so my $$$'s there, too. Early indicator is loss of power, followed by dead on the side of the road. $80 part, and 1/2 hour to swap. Always carry a spare, if you're running the big "C". Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
SuiteSuccess Posted June 14, 2019 Report Share Posted June 14, 2019 (edited) Darryl, Maybe GeorgiaHybrid will chime in on our “1/2 hour” sensor change. Twelve year old plastic is very brittle and crumbles often leaving just the barrel of the sensor stuck in the hole. Mine was a Volvo D12. Hope the Cummins is easier. 😊 Edited June 14, 2019 by SuiteSuccess Quote 2006 Volvo 780 "Hoss" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift Bed Build by "JW Morgan's Custom Welding" 2017 DRV 39DBRS3 2013 Smart Passion Coupe "Itty Bitty" "Don't go around saying the world owes you a living. The world owes you nothing. It was here first!" Link to comment Share on other sites More sharing options...
Wrknrvr Posted June 14, 2019 Report Share Posted June 14, 2019 Ain't that a great feeling. What the. Is happening. The throttle potentiometer is a likely culprit. Now I have had a bad connection on a positive battery terminal about 100 miles after cleaning the battery post. Was lucky and got off the interstate. Just in time to stop at a Walmart. Original battery nut was not open on top. Dammmm wire was not tight as the nut bottomed out on top of the post. Now that new potentiometer solved my cruise problem and gave much better throttle response. One should change all sensors every five years. just my thought,. Vern Quote Link to comment Share on other sites More sharing options...
spindrift Posted June 14, 2019 Report Share Posted June 14, 2019 Check ALL grounds first, not just the battery. Quote 2012 F350 KR CC DRW w/ some stuff 2019 Arctic Fox 32-5MCindy and Tom, Kasey and Maggie (our Newfie and Berner) Oh...I forgot the five kids. Link to comment Share on other sites More sharing options...
Lance A Lott Posted June 14, 2019 Report Share Posted June 14, 2019 Mine does this all the time, my traction control/abs is messed up and I am working on that now. Mine hates to down shift and skip shifts way too many gears. And my cruise control quit. Mines a Volvo D11. Any diagnostic ideas for the potentiometer on it? Quote Link to comment Share on other sites More sharing options...
Flying Finn Posted June 14, 2019 Author Report Share Posted June 14, 2019 Thank you guys. What is a throttle potentiometer? What does it do? Where is it located typically? Quote Link to comment Share on other sites More sharing options...
Darryl&Rita Posted June 14, 2019 Report Share Posted June 14, 2019 2 hours ago, SuiteSuccess said: Darryl, Maybe GeorgiaHybrid will chime in on our “1/2 hour” sensor change. Twelve year old plastic is very brittle and crumbles often leaving just the barrel of the sensor stuck in the hole. Mine was a Volvo D12. Hope the Cummins is easier. 😊 Advantage Cummins. A CPS on a Cummins will never last 12 years. 😆 Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
Darryl&Rita Posted June 14, 2019 Report Share Posted June 14, 2019 54 minutes ago, Flying Finn said: Thank you guys. What is a throttle potentiometer? What does it do? Where is it located typically? All modern diesels are "fly by wire", in that they don't have a mechanical connection between the throttle pedal and the fuel pump. There's a pair of potentiometers in the throttle pedal base. Look for the wires hooked to the pedal. I think that a pot malfunction will set a code, though. The ECM compares the reading between the two, and if too large a difference is found, sets a code. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
Wrknrvr Posted June 14, 2019 Report Share Posted June 14, 2019 More thoughts, on red top Cummins N14 But some may apply to your situation. 1. throttle position sensor is on back side of throttle pedal or gas pedal. 2 I would also install Baldwin fuel filters on unit . Mine has one on engine and one on the passenger side frame in front of the steer tire. NAPA filters cause me headaches for several years. 3 there are 3 small ground wires on each side of firewall on a Volvo in the engine compartment. Yep cause me a headache back a few years 4 if your engine has a fuel seliniod you may want to replace it. Hope this headache medicine will work. Vern Quote Link to comment Share on other sites More sharing options...
NeverEasy Posted June 14, 2019 Report Share Posted June 14, 2019 (edited) I am with rickeieio. My 2001 VNL660 showed the same symptoms after I sprayed soap on the pressure gauge lines over the throttle. Soap ran down the wires into the potentiometer. I think it cost $113 from Volvo. Could not buy just the pot. As I remember, two 10 mm head bolts hold the throttle to the floor. Easy fix. I still have the old one. Soap probably dried out and it might work. If you want, I check the potentiometer and send it to you if it looks good. On edit: The truck did not throw any codes. Edited June 14, 2019 by NeverEasy More info Quote Chet & Deb '01 Volvo 660 w/ Smart '19 Forest River Columbus 320RS 5th wheel 2022 Chev 2500HD Long Bed Retired CWO4, USN and federal service Electronics Tech/Network Engineer/Welder/Machinist Link to comment Share on other sites More sharing options...
Ronbo Posted June 14, 2019 Report Share Posted June 14, 2019 I have a 2000 N14. I made the mistake of installing a Baldwin fuel filter. No power, wouldn’t odle, etc. as soon as I installed a fleetgsurd filter, all was well in the world. I now carry 3 fuel filters with me. Sometimes speed o doesn’t carry them. As a side note, if you get bad fuel and need a filter changed, you can pull into speed o, purchase a filter and they will change it for free. Quote Ron C. 2013 Dynamax Trilogy 3850 D3 2000 Kenworth T2000 Optimus Prime Link to comment Share on other sites More sharing options...
Flying Finn Posted June 14, 2019 Author Report Share Posted June 14, 2019 After the education I got from all your comments (thanks) I took the truck into a local repair shop here in Sycamore. Asked them to check for codes (thinking something would would show up on their PC,) the Potentiometer, etc.. The results....no codes (of course) and the Potentiometer tested good. So after allot of head scratching we called a Cummins tech. who was kind enough to speak to us on the phone. He told me the symptoms are not fuel related based on what I shared with him. The engine would sputter and for sure post a code. His suggestion( as was spindrifts), was to check the electrical connections. He said faulty connections can cause the symptoms I am experiencing without posting codes to my panel. So I spent the afternoon taking everything apart, cleaning and reinstalling. Storms are rolling in so a test drive is planned for tomorrow. Quote Link to comment Share on other sites More sharing options...
Darryl&Rita Posted June 14, 2019 Report Share Posted June 14, 2019 Fingers crossed for you. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
rickeieio Posted June 15, 2019 Report Share Posted June 15, 2019 Yeah, that spindrift guy knows a bit about Cummins.............😜 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...
noteven Posted June 15, 2019 Report Share Posted June 15, 2019 Here’s some trivia: the first commercially available diesel powered truck available for purchase at a dealer was a Kenworth with a Cummins engine... in what year? ... Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
dennisvr Posted June 15, 2019 Report Share Posted June 15, 2019 2 hours ago, noteven said: Here’s some trivia: the first commercially available diesel powered truck available for purchase at a dealer was a Kenworth with a Cummins engine... in what year? ... 1923 ? Quote "It is better to have more truck than you need than to need more truck than you have" 2001 Volvo 660, Cummins 400 ISX, Eaton 3 Peddle Auto Shift 2014 Fuzion 40' Toyhauler 2015 Smart Car Link to comment Share on other sites More sharing options...
noteven Posted June 15, 2019 Report Share Posted June 15, 2019 KW began business in 1923... 1st Cummins 1934 ,... I think... Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted June 15, 2019 Report Share Posted June 15, 2019 First Kenworth with a Cummins was in 1933. A 100 HP Cummins HA-4 engine. Mine is Kenworth with a 500 HP Cummins ISX 😁 They are still a good choice. Quote 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
spindrift Posted June 15, 2019 Report Share Posted June 15, 2019 50 minutes ago, GeorgiaHybrid said: First Kenworth with a Cummins was in 1933. A 100 HP Cummins HA-4 engine. Mine is Kenworth with a 500 HP Cummins ISX 😁 They are still a good choice. Winner, winner, chicken dinner! 😆 Quote 2012 F350 KR CC DRW w/ some stuff 2019 Arctic Fox 32-5MCindy and Tom, Kasey and Maggie (our Newfie and Berner) Oh...I forgot the five kids. Link to comment Share on other sites More sharing options...
ms60ocb Posted June 15, 2019 Report Share Posted June 15, 2019 8 hours ago, noteven said: KW began business in 1923... 1st Cummins 1934 ,... I think... Great Trivia. Any pictures available? Clay 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...
spindrift Posted June 15, 2019 Report Share Posted June 15, 2019 12 hours ago, rickeieio said: Yeah, that spindrift guy knows a bit about Cummins.............😜 Thanks, Rick. I hope it will be that easy. Quote 2012 F350 KR CC DRW w/ some stuff 2019 Arctic Fox 32-5MCindy and Tom, Kasey and Maggie (our Newfie and Berner) Oh...I forgot the five kids. Link to comment Share on other sites More sharing options...
Flying Finn Posted June 17, 2019 Author Report Share Posted June 17, 2019 Follow up to my accelerator problem: After cleaning all battery connections etc. I thought I was golden. Took the truck to my brothers house on Saturday. On the way over everything worked as it should. On the way back (midnight, rainy) the accelerator gremlins struck again. Totally frusturated and ready to grenade the truck, I called Cummins (Rockford location, JX truck center, 262-709-3209) . Brought the truck in and explained the symptoms andmy attempts at corrective action. He hooked up the code reader and as expected no codes shown. Thankfully the tech checked for software updates. Imagine that, no updates since 2003. I bought the truck in 2006. Seems one of the patches was for.....you guessed it.....accelerator peddle problems. He tried to download the patches but my ECM would not recognize them. Long story not to short, he had to wipe out the old software from the ECM and install all the new stuff. After a test run all is well. 30 mile trip back to camp....all is well. If it wasn't for the cummins tech (Dave) never would in a million years would have thought of a software up grade. Thanks again for all your input. I hope this experience will help others. Brad Quote Link to comment Share on other sites More sharing options...
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