samrebel
Member
- Joined
- April 20, 2004
- Messages
- 47
- Reaction score
- 0
- City, State
- Cincinnati, OH
- Year, Model & Trim Level
- 1996 XLT
Well gentleman, this may be the beginning of the end for my trusty steed. My 96 OHV has had a gradually increasing knock, both at idle and under load, that seems to be coming from the underside of the engine. It's not super loud yet, but it's definitely become more noticable. Given that it's got 180K on the clock, I'm guessing this is one or more rod bearings. It really sucks, b/c the truck is still in really good shape, no rust (spent most of its life in MS), and runs good otherwise. I had just done the fuel and air filters, and only have a few months on my TT and WS+AAL.
I also have a CEL for P0171 and P0174 (lean condition), which is due to my monkeying with the EGR system to replace the valve, and haven't fixed the air leak yet. I don't think the knock is "detonation knock" related to the lean condition, but I wouldn't bet my savings just yet.
My questions are:
1. What is my next move? Should I check the oil pressure with an external gauge? The idiot light is not giving me any clues.
2. If it is rod knock, how much time/miles do I have before something really bad happens?
3. Are my only two options: 1. get rid of it, 2. pull the engine and rebuild/replace?
BTW, I recorded some quality audio of the noise, but I can't figure out how to attach audio files to a post. If someone wants to take a listen, send me a PM and I'll send you the file.
Samrebel
I also have a CEL for P0171 and P0174 (lean condition), which is due to my monkeying with the EGR system to replace the valve, and haven't fixed the air leak yet. I don't think the knock is "detonation knock" related to the lean condition, but I wouldn't bet my savings just yet.
My questions are:
1. What is my next move? Should I check the oil pressure with an external gauge? The idiot light is not giving me any clues.
2. If it is rod knock, how much time/miles do I have before something really bad happens?
3. Are my only two options: 1. get rid of it, 2. pull the engine and rebuild/replace?
BTW, I recorded some quality audio of the noise, but I can't figure out how to attach audio files to a post. If someone wants to take a listen, send me a PM and I'll send you the file.
Samrebel