Starter free spinning under load on a 94 YJ 2.5L
OK I've tried & tested just about everything the forums can throw at me. Figured it was about time to post my own thread before I go out & get me a new starter. This starter is more like frankenstein now.
Here's the issue:
Starter started making a loud whirring noise & wouldn't engage or try to turn the engine over. Took the starter off & in the process the cable on top broke off from being so corroded (cable that goes to solenoid). Ended up trimming the sleeve back some then threw another connector on it & mounted it again. This time it wouldn't even turn over. UGH, take it down again & figured I'd take this bad boy apart & try cleaning it out. By the way careful with the solenoid, putting that back together is a pain in life (I ended up using some small nails on the spring behind the bushings to keep them back, then slid the rotating piece back in, pulled nails out with needle nose when done). Anyhow, cleaned the filthy mess in both the solenoid/starter up, re greased everything that was supposed to be greased & put it back together again. Back to square one (but with a much better connector for solenoid), same friggin whirring noise. Unmounted & checked it straight from the battery with some jumper cables. Turns out the starter is engaging, cool pops right out just fine & all that, even spins to boot. So that's the whirring noise, awesome. Then why the hell is it not turning the fly wheel?
So I did all the checks people could come up with on here.
-Checked the battery (12+ volts, brand new blue top optima) - good
-Checked the relay voltages & even tried the jumper from pin 30/87 - same whirring noise & same voltage, k good.
-Checked voltage at starter - 12+ volts, k good. Also tried the jumper cables trick from battery to starter, same whirring noise.
-Attempt to jump battery from another car & recheck voltages/jumpers - voltage checks out in all locations again, same whirring noise from all test spots (key, relay, starter jump)
- Beat starter like a red headed step child w/ hammer - no apparent effect, still does not engage.
- Bring starter to Napa, autozone, kragen - all places tested starter & it checked out good on the machine. However, if you press your finger to the spinning part that comes out it stops spinning but stays out until power removed.
- oh ya also checked all the gears & flywheel (internally/externally) - no missing teeth or worn down edges.
Any ideas? Is there something I'm missing here to get that gear to not free spin?
1994 Wrangler YJ, 2.5L 4 cyl, 4.88 gearing, Detroit locker (R), 275/75R18, Procomp 3.5" lift, Ubolt yoke upgrade (F/R), Flowmaster, K&N air filter, Mean Green Alternator, Optima Blue top, Livewires distributor/cables, Screamin demon ignition coil, Relay switchs for headlights/offroad lights upgrade,Lexan windows, Brown dog motor mounts, flex fan
Last edited by Foozlesnorf; 02-10-2013 at 06:02 PM..