Let me begin by saying THANKS! to everyone who has taken the time to document and photo the processes for heater hose replacement and CEL codes eradication. I'm persistent, but my wrenchin skills woulda left me broke down, had it not been for the wealth of knowledge here on mud. The fsm was helpful, but the pics and write ups by mud members made all the difference.
I spent an entire weekend working on fixing these two issues (I know, I'm slow) had some good laughs, and learned a few things along the way. The pics on Slee, were the biggest help with the PHH. By the way, those firewall hoses were an ass whip, and they don't even get a name?! For the PHH, I chose to remove the hard pipe connected to it. After struggling with trying to get the new hose slid onto both ends for about an hour, I knew removing it was the only way to get out of the deal with some sanity. Once I did that, 15 mins to finish.
As far as the EGR system, I didn't test any of the old components. I didn't replace every component though, only the most common failures. Every single vac line was replaced, and all pass thru lines for coolant (thru TB). Fingers crossed, I turned the key and it fired up, no codes. Man, I was stoked!
I had driven about 110mi. when the CEL returned, however. This time indicating 130 and 133 for the O2 sensors. Relieved that it wasn't 401, bummed that I'm still chasing little gremlins. But the kicker is, this afternoon, just before shutting the truck down, I heard a fast clicking (like a relay, definitely electrical) coming from under the dash, left of the steering wheel, above the dead pedal. The sun was bright and I could be mistaken, but I thought I saw tiny sparks coming from the wiring harness! where the computer brain lives. It was erratic and fast, and eventually quit after turning the key off / on a few times and then finally driving away (had to get my kiddo home). Everything seems to work just fine, and there was no smell of even the slightest burnt wire when it happened, but I'm freakin out now. WTH!
Could the CEL codes be linked to this issue? I suppose. What would be the most logical place to start with figuring out what the hell the issue might be with the wiring? A quick visual inspection revealed no obvious wire damage. Is there a simple way to check the wiring for a short? Is the ECU failing?!
I appreciate any help!
Bart
I spent an entire weekend working on fixing these two issues (I know, I'm slow) had some good laughs, and learned a few things along the way. The pics on Slee, were the biggest help with the PHH. By the way, those firewall hoses were an ass whip, and they don't even get a name?! For the PHH, I chose to remove the hard pipe connected to it. After struggling with trying to get the new hose slid onto both ends for about an hour, I knew removing it was the only way to get out of the deal with some sanity. Once I did that, 15 mins to finish.
As far as the EGR system, I didn't test any of the old components. I didn't replace every component though, only the most common failures. Every single vac line was replaced, and all pass thru lines for coolant (thru TB). Fingers crossed, I turned the key and it fired up, no codes. Man, I was stoked!
I had driven about 110mi. when the CEL returned, however. This time indicating 130 and 133 for the O2 sensors. Relieved that it wasn't 401, bummed that I'm still chasing little gremlins. But the kicker is, this afternoon, just before shutting the truck down, I heard a fast clicking (like a relay, definitely electrical) coming from under the dash, left of the steering wheel, above the dead pedal. The sun was bright and I could be mistaken, but I thought I saw tiny sparks coming from the wiring harness! where the computer brain lives. It was erratic and fast, and eventually quit after turning the key off / on a few times and then finally driving away (had to get my kiddo home). Everything seems to work just fine, and there was no smell of even the slightest burnt wire when it happened, but I'm freakin out now. WTH!
Could the CEL codes be linked to this issue? I suppose. What would be the most logical place to start with figuring out what the hell the issue might be with the wiring? A quick visual inspection revealed no obvious wire damage. Is there a simple way to check the wiring for a short? Is the ECU failing?!
I appreciate any help!
Bart