- Location
- Parker, CO
1989 Limited XJ. I6 4.0
The long story:
I bought the jeep last year for a hundred bucks from a roommate who lacked the patience to try and fix her. A mechanic friend of mine got her running but the engine sounded very tired. I spent the next 9 months in between classes pulling the engine, rebuilding and putting her back following the FSM. I have resorted to the forum because I have two weeks left at my place in Boulder.(I graduated!!!) De-glazing the cylinders, new piston rings, and a new piston where it was apparent that the broken rings had worn away the ring grooves to the point where the top and second compression rings where worn almost into one(A complete photo documentary is available on Facebook but I figured there is nothing you guys haven't already seen).
The shorter story:
The engine runs beautifully (in my inexperienced opinion). Oil pressure is a little high at first but has dropped down to 40 PSI. Temperature seems to idle at or around 200 and the engine itself seems quiet and smooth. Problem #1: I am hearing a clicking/binging noise coming from the bell housing. At a 700 RPM idle it is random in timing but if I were to average it out I guess it's about once a second. But any RPM above idle the noise goes from bad to worse. I have also noticed that when I turn on the AC it gets worse. I have a hunch that it might be a balance thing. Tom Houston, without being able to hear it, thinks it might be a cracked flywheel(What a nice guy. Even offered to come down and listen to her had he not been out of town this whole week) But trying to watch a flywheel spin at 700 RPM and listen isn’t easy. I spray painted the 4 bolds going into the torque converter to see if there was any dragging going on. Doesn’t appear to be.
Problem 2: She won’t rev past 1.1k RPM without puttering out/losing power and shaking badly. I wouldn’t go as far as a full backfire (again, novice thinking) from the tailpipe but there is a pop taking place. With tons of forum reading about possible backfires (if that is indeed what it is) I decided to buy vacuum and fuel gauge. Fuel is a 32 PSI with the vacuum pressure regulator hooked up. FSM seems to think that’s okay. As for vacuum, I have diagnose the EGR and found that I have a bad EGR solenoid. Would this be the cause? I’ll get around to replacing it as soon as I can convince the guy at NAPA what I’m talking about. I can’t afford to replace everything and just cross my fingers otherwise I would.
Any help, advice, even criticisms at this point would be much appreciated. If there is no reply to this then I hope everyone else is following Tom's lead and enjoying themselves and I hope to join everyone on the next trip.
Brent Motz atriot:
303 917 9145
The long story:
I bought the jeep last year for a hundred bucks from a roommate who lacked the patience to try and fix her. A mechanic friend of mine got her running but the engine sounded very tired. I spent the next 9 months in between classes pulling the engine, rebuilding and putting her back following the FSM. I have resorted to the forum because I have two weeks left at my place in Boulder.(I graduated!!!) De-glazing the cylinders, new piston rings, and a new piston where it was apparent that the broken rings had worn away the ring grooves to the point where the top and second compression rings where worn almost into one(A complete photo documentary is available on Facebook but I figured there is nothing you guys haven't already seen).
The shorter story:
The engine runs beautifully (in my inexperienced opinion). Oil pressure is a little high at first but has dropped down to 40 PSI. Temperature seems to idle at or around 200 and the engine itself seems quiet and smooth. Problem #1: I am hearing a clicking/binging noise coming from the bell housing. At a 700 RPM idle it is random in timing but if I were to average it out I guess it's about once a second. But any RPM above idle the noise goes from bad to worse. I have also noticed that when I turn on the AC it gets worse. I have a hunch that it might be a balance thing. Tom Houston, without being able to hear it, thinks it might be a cracked flywheel(What a nice guy. Even offered to come down and listen to her had he not been out of town this whole week) But trying to watch a flywheel spin at 700 RPM and listen isn’t easy. I spray painted the 4 bolds going into the torque converter to see if there was any dragging going on. Doesn’t appear to be.
Problem 2: She won’t rev past 1.1k RPM without puttering out/losing power and shaking badly. I wouldn’t go as far as a full backfire (again, novice thinking) from the tailpipe but there is a pop taking place. With tons of forum reading about possible backfires (if that is indeed what it is) I decided to buy vacuum and fuel gauge. Fuel is a 32 PSI with the vacuum pressure regulator hooked up. FSM seems to think that’s okay. As for vacuum, I have diagnose the EGR and found that I have a bad EGR solenoid. Would this be the cause? I’ll get around to replacing it as soon as I can convince the guy at NAPA what I’m talking about. I can’t afford to replace everything and just cross my fingers otherwise I would.
Any help, advice, even criticisms at this point would be much appreciated. If there is no reply to this then I hope everyone else is following Tom's lead and enjoying themselves and I hope to join everyone on the next trip.
Brent Motz atriot:
303 917 9145