Hi, I'm new here, my name's Ken, I've been trying to troubleshoot a 'new-to-me' truck. It's a 2007.5 Ram DRW 6.7 Auto, with @ 250k miles. It has the EGR/DPF delete and Magnaflow exhaust, and came with an XRT Pro tuner. I've owned the truck about 6 weeks, but have only driven it about 4 days out of that. First day, bringing it home, just outside my driveway, it suddenly quits running, as if it's out of fuel. I coast into my parking space... it could've been worse, like in traffic, so that's good anyway. I called the seller, he said that happened to him once, so he came over and we checked to make sure the lift pump was working. It was, so we plugged in the tuner, and it didn't communicate with the ECM, so, we figured it was bricked. The ECM was under warranty from when he bought it about 8k miles ago, (he had the transmission replaced then too) so he sent it in, and it took about 2 weeks to get a new one back. We put that one in, it started, ran ok, but still had a few codes that the tuner wouldn't take out. I drove it 3-4 days, then, a 'reduced engine power' message pops up, while driving, once more, it just stops running. I again coast to a safe place, wait a few minutes, and it starts back up. I drive it home, park it, and find a mechanic nearby to diagnose it. He takes it in, and it sits there for 3 1/2 weeks... he never calls me, and acts like I'm putting him out when I check on it once a week. Ok fine, I go there yesterday, and he says he thinks it's got a bad hi pressure fuel pump. I go get it, take it home, and am now trying to confirm that's the problem, because there are a few other things that it could be, and I can't afford to just throw parts at it, I'm a totally disabled vet, and on a very fixed income.
So, it's putting out 8 codes, but most of them are from the EGR/DPF delete and the P0037 & P0038 O2 sensor heater circuit too low, I think the cat might be gone, so I'm not worried about that. Here are some of the codes that I'm looking at that could cause the quitting problem. The P0087, Fuel rail pressure too low; P1012 Fuel pump delivery pressure too hi; and a P268D Cyl injector data incompatible. The tuner isn't taking any of these DTCs out, I'd like the emissions stuff gone so my CEL doesn't come on. So, there may be something wrong with the tuner.
The things I suspect are: the fuel pressure regulator ($89), the fuel pressure sensor ($306.79), the Fuel Injector auxiliary air supply (fuel pressure relief valve) ($352) ; The Fuel injector pump ($756.99) or the Diesel fuel injector driver module (no price). With all the experience on this forum, surely someone has had this problem, and can point me in the right direction, hopefully, one day I can pay it forward
So, it's putting out 8 codes, but most of them are from the EGR/DPF delete and the P0037 & P0038 O2 sensor heater circuit too low, I think the cat might be gone, so I'm not worried about that. Here are some of the codes that I'm looking at that could cause the quitting problem. The P0087, Fuel rail pressure too low; P1012 Fuel pump delivery pressure too hi; and a P268D Cyl injector data incompatible. The tuner isn't taking any of these DTCs out, I'd like the emissions stuff gone so my CEL doesn't come on. So, there may be something wrong with the tuner.
The things I suspect are: the fuel pressure regulator ($89), the fuel pressure sensor ($306.79), the Fuel Injector auxiliary air supply (fuel pressure relief valve) ($352) ; The Fuel injector pump ($756.99) or the Diesel fuel injector driver module (no price). With all the experience on this forum, surely someone has had this problem, and can point me in the right direction, hopefully, one day I can pay it forward