ABS Light = Seized crankshaft?
06-13-2005, 08:54 AM
#21
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Originally Posted by Scot,Jun 13 2005, 08:53 AM
if the tires locked up at 90mph he more than likely didn't put the clutch in at the same time.... wouldn't that lockup the driveshaft...moving backward, wouldn't that stop the engine from spinning immediately?
06-13-2005, 09:23 AM
#22
Originally Posted by mikegarrison,Jun 13 2005, 11:54 AM
Haven't you ever driven a car without ABS? Brake lockup of the wheels does not destroy the engine. Even if all four wheels were to lock up, all it would do is stall.
06-13-2005, 09:25 AM
#23
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[QUOTE=Scot,Jun 13 2005, 10:23 AM] right.....but normally you put the clutch in.... if you didn't, wouldn't the engine go from whatever rpm (say 5000rpm) to zero in that instant?
06-13-2005, 09:36 AM
#24
Originally Posted by mikegarrison,Jun 13 2005, 12:25 PM
It's called "stalling the engine". If engines were destroyed every time one stalled, I would definitely be in the engine manufacturing business. It's not exactly wonderful for the drivetrain components, but it doesn't destroy them.
06-13-2005, 09:54 AM
#25
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Originally Posted by Scot,Jun 13 2005, 09:36 AM
okay.... it was just a thought..... what about if he was at 8k and instantly locked them up?
06-13-2005, 10:26 AM
#26
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a thumping noise hear din the engine can be a few things. a problem witht he crankshaft would sound like a thumping noise. but think ofthis if it was an oil starvation problem wouldnt the rod journals ge the worse of it, meaning they would probalby loose its oil film and knock before the main journal would. i have seen flywheels make a thumping noise and have found them to be broken, warped or loose. you might want to keep that in consideration. that has been the closest thing to this i have found at my dealer.
06-13-2005, 05:23 PM
#27
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Originally Posted by Scot,Jun 13 2005, 10:53 AM
if the tires locked up at 90mph he more than likely didn't put the clutch in at the same time.... wouldn't that lockup the driveshaft...moving backward, wouldn't that stop the engine from spinning immediately?
You have to remember that when the clutch is engaged it is not physically locking the driveshaft to the engine, it is relying on friction to couple the two together.
Gabe
06-13-2005, 06:31 PM
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What size tires does he have on it? It's possible the excessive speed freaked out the ABS system because of a size variance. This would contribute to the randomness of the two things. High load oil system failure coupled with ABS light. Good luck!!
06-13-2005, 06:52 PM
#29
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Sure it wasn't contaminated fuel? Sand, sugar, etc will lock an engine up real good. (those are only examples guys)
If you engage the clutch can you turn the engine then? Also did you remove the timing chain and belts before trying to move the crank? I reaching here if you didn't notice... Someone mentioned a spun bearing earlier.
It really sounds like a classic case of an overheated motor, which your not really supposed to turn off ... (should let it idle and cool down) If you turn off the motor while severly overheating it cease. (sp?)
If you engage the clutch can you turn the engine then? Also did you remove the timing chain and belts before trying to move the crank? I reaching here if you didn't notice... Someone mentioned a spun bearing earlier.
It really sounds like a classic case of an overheated motor, which your not really supposed to turn off ... (should let it idle and cool down) If you turn off the motor while severly overheating it cease. (sp?)
