Question about 1989 Chevrolet S-10 Blazer

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1989 s-10 2.8 5 speed 2 wheel drive. i've never had a problem with the clutch. never slipped. ever. last night i was driving just like i always do and all of a sudden it wouldn't come out of 3rd gear (accelerating). i realized there was no clutch whatsoever. so i limped it home and pulled the slave cylinder. i held the rod in and had someone step on the clutch but i couldn't hold the rod in. it pushed it right out no matter how hard i held it. could it still be my slave cylinder? there are no leaks and the clutch master cylinder is full. what's goin on here?

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It should like you have a broken set of clutch fingers. These are the pieces that the throwout bearing press on to disengage the clutch. I would say that at the age of you vehicle that the clutch has finally broke. Even though you may have never had any slipage once these finger break the clutch fails to work.
If you have the slave cylinder reinstalled you can remove the inspection cover from the bottom of the bell housing and view the clutch while someone steps on the pedal. You should be able to see the clutch release from the fly wheel or at least be able to see some movement if the slave is working.

Posted on Jul 30, 2010

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Sounds like you might have broke the fingers on the pressure plate or the throwout bearing came apart. When someone pushes the clutch pedal you can see the clutch fork moving?

Posted on Jul 30, 2010

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If you grab your clutch fork, and attempt to push it back, youll notice, the amount of pressure it takes to apply the though-out bearing. if you have no pedal at all...its possible to be either the slave, or the master cylinder. sometimes replacing both is good practise, one to fix problem, 2nd as prevenative maintenence, in that if one or the other is bad, the other component isnt far from failing itself. i wouldnt rule out possible fluid leak, (line or fitting) for loss of fluid or air entering system. try pushing new fluid from bleeder, on slave, up through the line, to resevior, as they can be difficult to bleed. A cattle surenge with small hose on the end, filled w brake fluid, works well. air goes up easier than it comes down. if you develope a pedal, then check for leaks. hope that helps. James White (White Automotive, Hopkins MO. ASE tech/ 17 yrs experience..

Posted on Feb 04, 2013

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Differentials.

The Jeep Quadra Drive systems have a limited slip differential in the transfer case as well as the front and rear axles - which allows you to run all wheel drive on all surfaces. This matters because without limited slip capability your transfer case & axles would break.

Have your transfer case and axles serviced by a dealer, really a real dealer for Chrysler Jeep. These diffs and transfer cases can use unique gear oils that you don\'t want to mix up with regular gear oil.

That howling, clunking, grinding noise is your dog-clutches slipping (as designed) as you go around the corner.



Additional Details below:

So what\'s the Diff?



All differentials are is a way to allow for different wheels to travel different distances on the same vehicle. What-he-say? Yep, when we turn a corner all 4 wheels go a different distance around that corner... oh yeah well everybody knows that. Think about it, your making that hard left turn at your favorite Fast-Food joint; your left front wheel is 2 feet away from the curb, but the back left wheel rubs the curb... why?

As you make that 90 degree turn, your left back wheel travels 4 feet, your left front wheel travels 6 feet, your right rear wheel travels 7 feet, and your right front wheel travels 8 feet.



Ok you say, what\'s the big deal? A couple feet slip here a couple of feet slip there... Well remember your sticky rubber tires on dry asphalt don\'t really give very much and u-joints, axles shafts, and even pinion and ring gear damage can occur. Fortunately for us, Leonardo DaVinci (yeah really) saw this problem coming and designed the Open Differential. There are mini-gears inside your open differential that allow for that slippage, these mini-gears are called spider gears. Problem is when your in snow, ice, mud the spider gears of the open diff allow all your power to go to the wheel with the least traction (and your stuck).

Ok let\'s put another powered axle up front and call it 4x4. Umm no.

A normal 4x4 is not really true four wheel drive. At best it\'s the worst 2 wheels you\'ve got - driving you forward. Until both wheels on the same side are in a ditch, and your stuck.



Well what the heck Leonardo? I want something better than stuck!



The old-time dragster dudes of the 50\'s & 60\'s agreed with you and they welded those little spider gears together for true positraction across both wheels. Ever been close to a big monster truck in a parking lot and heard its tires chirping around the corner? Or an old Jeep crow-hopping it\'s way around a corner - Letting out little tire noises (like "erp" "erp" "erp")?

That\'s because these 4x4\'s have been modified to not have any differential action. None. This is great in a 1/4 mile dragster race or a mountain climbing rally car. A locked front differential can (and most likely will) cause you to crash... not good for daily drivers.



You\'re in luck, the Limited Slip Differential (LSD) has clutches instead of spider gears, which engage as wheel slippage increases. Subaru and Audi are 2 companies that really brought this to market with All Wheel Drive decades ago. Jeep and other SUV/Pickup manufacturers have utilized clutch-based LSD\'s as well. Clutch-based LSD\'s however, have a limited lifespan and can require special gear oils. When Clutch-based LSD\'s fail, they basically become an Open Diff.



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{ ...
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