Hudy Posted June 7, 2019 Share Posted June 7, 2019 I feel like a regular in MJ tech Threw a new starter in tonight. I had an old ACDelco reman starter making a ton of noise. Part of that noise was a grind towards the end of the crank. New ACDELCO starter came in. Replaced it. Grind still present. But the starter motor is much quieter! The old one had some SERIOUS play in it. I attached a video. And listening to it now on the video you can barely hear it 39EAC4F6-C499-4187-9998-5136125E421B.MOV Link to comment Share on other sites More sharing options...
Pete M Posted June 8, 2019 Share Posted June 8, 2019 can you peek in and see the flywheel teeth? Link to comment Share on other sites More sharing options...
gogmorgo Posted June 8, 2019 Share Posted June 8, 2019 Are both bolts tight? For whatever dumb reason, the starter bolts aren't the same size. One of them is metric, the other isn't. Because of the slight diameter difference if you put them in wrong, one will act like its going in but it won't stay snug, and the other will start in but crossthread. Or at least that was my experience. Link to comment Share on other sites More sharing options...
eaglescout526 Posted June 8, 2019 Share Posted June 8, 2019 Did you put the starter shim back in? Link to comment Share on other sites More sharing options...
Hudy Posted June 8, 2019 Author Share Posted June 8, 2019 13 hours ago, Pete M said: can you peek in and see the flywheel teeth? 12 hours ago, eaglescout526 said: Did you put the starter shim back in? 12 hours ago, gogmorgo said: Are both bolts tight? For whatever dumb reason, the starter bolts aren't the same size. One of them is metric, the other isn't. Because of the slight diameter difference if you put them in wrong, one will act like its going in but it won't stay snug, and the other will start in but crossthread. Or at least that was my experience. Flywheel photo attached. I didn’t have any shins on the old one, and through all of my 4.0s have never shimmed before. Is the MJ different? The bolts seem right to me... it’s definitely tight and didn’t crossthread. Link to comment Share on other sites More sharing options...
eaglescout526 Posted June 8, 2019 Share Posted June 8, 2019 Oh 4.0. Never mind. The 2.5 has one. I don't know about the 4.0 Link to comment Share on other sites More sharing options...
Hudy Posted June 9, 2019 Author Share Posted June 9, 2019 I picked up another starter (Reman this Time) and installed. Same sound. Reinstalled the new starter. Cleaned all terminals. Ran a new starter wire. Same sound. The sound its making is the exact same sound it makes if you try to crank the starter with the motor running. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted June 9, 2019 Share Posted June 9, 2019 Is the flywheel loose? Link to comment Share on other sites More sharing options...
Hudy Posted June 9, 2019 Author Share Posted June 9, 2019 1 hour ago, Knucklehead97 said: Is the flywheel loose? Tight as can be. Is it possible the flywheel was replaced at one point with a different tooth count? Did this change at any point across the years? Are they different for the BA10 and AX15? Link to comment Share on other sites More sharing options...
Pete M Posted June 9, 2019 Share Posted June 9, 2019 I don't know for sure but I kinda doubt they are the same part number (88 ba10 vs 90 ax-15), but I retained my peugeot flywheel and clutch with my 2000 AX-15 swap. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted June 9, 2019 Share Posted June 9, 2019 Rockauto is showing same part numbers for BA10/AX15 but different numbers for HOvsRenix Link to comment Share on other sites More sharing options...
Hudy Posted June 9, 2019 Author Share Posted June 9, 2019 I pulled the dust cover back and put my inspection camera in there. Youtube this time for the video. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted June 9, 2019 Share Posted June 9, 2019 It almost looks and sounds like the starter isn't retracting fast enough before the engine picks up RPM's. Link to comment Share on other sites More sharing options...
Hudy Posted June 10, 2019 Author Share Posted June 10, 2019 4 hours ago, Knucklehead97 said: It almost looks and sounds like the starter isn't retracting fast enough before the engine picks up RPM's. Agreed. To me it seems like the flywheel has an edge worn on the teeth that’s “catching” the starter and stopping it from fully releasing. Absolutely nothing I can do short of filing each tooth straight or replacing it, which will have to wait for the BA to AX swap. Link to comment Share on other sites More sharing options...
Ωhm Posted June 10, 2019 Share Posted June 10, 2019 Just a thought, but what if you have a sluggish starter relay or sloppy ignition switch. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted June 10, 2019 Share Posted June 10, 2019 ^ that's what I was thinking. Seems more likely than the edge on the flywheel. Link to comment Share on other sites More sharing options...
Hudy Posted June 10, 2019 Author Share Posted June 10, 2019 9 hours ago, Ωhm said: Just a thought, but what if you have a sluggish starter relay or sloppy ignition switch. 8 hours ago, Knucklehead97 said: ^ that's what I was thinking. Seems more likely than the edge on the flywheel. I added a wire to the starter solenoid to bypass the ignition switch as I thought this might be the culprit. Unfortunately I still had the noise At this point I can’t imagine what else it could be then the flywheel? Link to comment Share on other sites More sharing options...
Jeep Driver Posted June 10, 2019 Share Posted June 10, 2019 Let it grind. Link to comment Share on other sites More sharing options...
Hudy Posted June 10, 2019 Author Share Posted June 10, 2019 4 minutes ago, Jeep Driver said: Let it grind. And grind it will. I have a feeling it will get better as the starter’s gears wear in. Or explode. Link to comment Share on other sites More sharing options...
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