Hello all - I have a 2009 Hino 258 that I bought used with about 250k miles on it. For the first 2 weeks that I’ve had it it’s ran very well, this is the first pre-DEF hino I’ve owned, I have 4 2011 and newer 258’s and like them very much.
3 days ago the driver of this one reported that the truck was making a whooshing noise and had a check engine light. I found the boost hose from the turbo to the CAC had come off of the turbo due to a broken clamp. I refitted it, and replaced the clamp. I hooked up DX2 to it and found P2002 and U1001. I figured that it must’ve had issues with the air intake measurement with the boost hose off and had a failed regen. So I cleared them and sent him on his way. Today he complained of the same noise again and when the truck was doing automatic regens, he complained of significant black smoke. This time the other hose clamp had broken on the same boost hose. I replaced it, and refitted the hose. There seems to be a significant amount of oil on this side of the CAC. I have not checked the cold side yet. Hooked DX2 up and had P2002 active with P0087, P0088, U1001, U0101, U0155 and P2002 all inactive. (I don’t get how 2002 can be both inactive and active but whatever Hino lol).
I switched the driver into a spare truck so I can work on this one on Tuesday. Any thoughts? After reading several of the posts on here I was gonna start with a PM and replace the air filter and fuel filters. The amount of oil in the boost hose also makes me want to check the turbo shaft for play. Any help is appreciated. Thank you!
3 days ago the driver of this one reported that the truck was making a whooshing noise and had a check engine light. I found the boost hose from the turbo to the CAC had come off of the turbo due to a broken clamp. I refitted it, and replaced the clamp. I hooked up DX2 to it and found P2002 and U1001. I figured that it must’ve had issues with the air intake measurement with the boost hose off and had a failed regen. So I cleared them and sent him on his way. Today he complained of the same noise again and when the truck was doing automatic regens, he complained of significant black smoke. This time the other hose clamp had broken on the same boost hose. I replaced it, and refitted the hose. There seems to be a significant amount of oil on this side of the CAC. I have not checked the cold side yet. Hooked DX2 up and had P2002 active with P0087, P0088, U1001, U0101, U0155 and P2002 all inactive. (I don’t get how 2002 can be both inactive and active but whatever Hino lol).
I switched the driver into a spare truck so I can work on this one on Tuesday. Any thoughts? After reading several of the posts on here I was gonna start with a PM and replace the air filter and fuel filters. The amount of oil in the boost hose also makes me want to check the turbo shaft for play. Any help is appreciated. Thank you!