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blacklions
New Member
4 Posts |
 Posted - 03/31/2011 : 3:31:11 PM
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| I'm currently working a 01 T444e amtran school bus ,this bus starts up fine but for some reason smokes like a chimney (thick white smoke),I ran codes and I'm gettin 155,134,153,331,113,132,333,626,525,I forgot to mention it dies out after about 45 minutes of idling or driving,idles fine ,spits and sputters under acceleration have any ideas please !! I'm past head ache I'm having a total out of body out of mind experience here. |
Edited by - blacklions on 04/01/2011 07:26:42 AM
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tigger2
Advanced Member
USA
470 Posts |
Posted - 04/01/2011 : 10:37:11 AM
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| From the codes listed 113 b+ voltage low and 626 ecm power unexpected reset point to power losses at the battery connection or the ecm connection, pose the most likely cause of your smoking problems. Be sure to check connections fuses and cable nuts at batteries. Code 134 the ecm sees both idle validation and throttle past idle and 132 is acc pedal signal high both possible pedal sensor. The other codes are 155 air inlet signal high, 331 icp above working pressure 333 icp above/ below desired level, 525 inj. driver circuit fault. |
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blacklions
New Member
4 Posts |
Posted - 04/03/2011 : 3:37:14 PM
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| Thanks fo the info i will be sure to check the wiring at th ecm and the BAT terminals,at firts i was thinking glow plug module,but on these engines anything is possible:thanks much I will be gettin back to you soon. |
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IBTMech
Top Member
USA
973 Posts |
Posted - 04/03/2011 : 6:24:42 PM
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| Aside from the most likely electronic issues such as cam sensor ...... starving for air??? Mouse nest in the air filter housing? Seen it happen. |
If it doesn't fit, FORCE it.
If it breaks, well, it needed replacing anyway.
Pullin' wrenches for 45 years. |
Edited by - IBTMech on 04/03/2011 6:28:25 PM |
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C.HARDY
Advanced Member
354 Posts |
Posted - 04/05/2011 : 4:07:41 PM
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| Dont overlook the simple fuel filter and pre-screen. I've seen a lot of folks forget that. |
"Hardybusman" |
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blacklions
New Member
4 Posts |
Posted - 04/05/2011 : 4:53:27 PM
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| Changed IPR sensor today bus started up! and stopped smoking , but seconds later started to cackling like a ROOSTER!, I'm gonna look at the hpp next and also fuel injectors,by the way I'm working with out a scamatic so I'm still trying to find B+ to the ECM.It also set a new code 122 ,and oil pressure is at 40 psi at idle. |
Edited by - blacklions on 04/05/2011 4:58:43 PM |
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efkimes
Active Member
31 Posts |
Posted - 04/06/2011 : 04:31:22 AM
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| We had to tow one of our 444E busses in. It would start and run but ran like yours. Battery conections where fine. But when we tested the batteries individualy we found 1 or 2 bad batteries. It had enough battery power to start and run, but not enough to run right. We put in 3 new batteries and that was our only problem. |
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stovebolt
Active Member
37 Posts |
Posted - 04/06/2011 : 05:36:01 AM
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| I had one cackling that was caused by chaffed wires leading to the cam position sensor |
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blacklions
New Member
4 Posts |
Posted - 04/07/2011 : 4:55:14 PM
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| yeah! I know what you mean about the bad batteries I happened to had to change one of them it only had 6 volts in it,the other had 13 volts, but today i worked it and I noticed somthing peculiar, I start up on a cold start it starts fine and idles good for about 1 minute then it the cackling starts and engine light comes on , but when i put the pedal too the floor the engine light go off the oil pressure increases from 40 psi to 65psi on the gauges and the engine light go off ,also when i drive it the bus does have power on take off ,but soon after acts like it,s starving for fuel, I also noticed thick white smoke from behind the turbo today and it didnt feel as if the turbo was kicking in.Monday i have a plan to test the waste Gate on the turbo the back pressure sensor and tube is fine ,but also the injectors I will check. give me more ideas please if you can this truly is a learning experience. |
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Starts fine Smokes like chimney
