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Car died when rear end blew

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Old Mar 20, 2015 | 07:19 PM
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Car died when rear end blew

Hey third gen, my rear end recently blew I bought all new parts to rebuild but as I limped it home the problem got worse, it died when I was driving it and when I pulled onto my street it died again and wouldn't run. I am thinking it wouldn't run due to the broken gears and am hoping it will be fine when I rebuild the rear end. The tranny also shifts hard which is a separate issue. The fluid looks brand new, I am going to see if the trans filter isn't on all the way and hope that fixes it. Any input on the these issues would be very appreciated, thanks
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Old Mar 21, 2015 | 06:33 PM
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Car died when rear end blew

The axle wouldn't have anything to do with the engine not running unless shattered parts put a whole in a gas line or tank. (in other words, not likely)

Does the engine crank? Spark? Fuel pressure?
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Old Mar 21, 2015 | 06:36 PM
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Re: Car died when rear end blew

It will start right up and run fine right now, that's why I was confused just has a howl in the rear end I am going to rebuild soon. Once the rear is new do you think it will run good again? It ran amazing up until the rear blew
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Old Mar 21, 2015 | 06:46 PM
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Car died when rear end blew

No. The axle should have no bearing on how the engine runs. When the axle blew were you doing a burn out or some other reckless (and fun) behavior? That could have caused damage to both the axle and the engine. You'll have to start troubleshooting the engine running as a separate problem.
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Old Mar 21, 2015 | 06:51 PM
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Re: Car died when rear end blew

It's the rear diferential gears not the axle and know nothing at all I had just bought the car and it turns out it was really low on rear diff fluid or had a leak I was actually going about 5mph over a speed bump then park and went into Costco when I came out to leave I turned the wheel all the way to the left to make a turn and clunking from the rear end I limped it home so I could check it out the car died and started right back up, I was almost home then the car died again as I pulled on to my street and would not start I pushed it to my driveway and tried to start it after a little while and started right up. Idk if it has anything to do with it but I discovered my thermostat has a bad leak and caused the car to get hot could that effect it?
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Old Mar 21, 2015 | 07:08 PM
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Car died when rear end blew

Are you sure you have a problem in the axle then? Low fluid or not, I've never heard of a differential problem from sitting in a parking lot or going over a speed bump at 5mph. Either that or it had a problem before. Could your engine have overheated from low coolant and caused engine damage so that it runs bad now? Sure. But that's only speculation from a leaking theremostat housing, not anything I'd latch onto as a cause yet. As far as engine, you'll have to start digging further. Yes, fix the leak first. Then start checking things like plugs, timing, fuel pressure, wiring, vacuum lines, compression. Since as of now we know very little to what went on with it, you'll have to work on it looking for anything that would stop it from running right.
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Old Mar 21, 2015 | 07:15 PM
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Re: Car died when rear end blew

Yeah I am sure the rear diff needs a rebuild I pulled the cover off and saw a tooth off a gear in there, and the posi springs were off as well and a couple other little flakes. I did start to do the plugs I only did half thougb need to do the other side. They were very bad I got new wires cap and rotor to go with it as well. When I went over that speed bump it crashed down hard on something I'm guessing the diff because the speed bump was huge most likely caused a leak because there was fluid residue. I don't think timing because it ran amazing the day before and it wouldn't have jump timing, a lot of hoses are old and could be replaced, I aslo pulled the air system out and plugged it with bolts I only got to do one side but this dosnt have anything to do with it.
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Old Mar 21, 2015 | 07:34 PM
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Sounds like you're heading in the right direction. Let us know what you find.
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Old Mar 21, 2015 | 07:36 PM
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Re: Car died when rear end blew

Alright sounds good I'm gonna rebuild the rear end swap the other side of plugs/cap/rotor/wires new Tstat and gasket and delete the other side of the air system and hope it's good I'll let you know
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Old Mar 22, 2015 | 03:17 PM
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Re: Car died when rear end blew

The diff grenaded itself, I saw it. Literally pieces everywhere. The trans was rebuilt, probably rebuilt poorly, reason for shifting hard. Doubt its the filter being pulled out, when there not all the way in the trans will usually not go into any gear at all. Car ran fine and then randomly died. Probably more like an icm issue or coil getting to hot. Doubt its plugs and wires or cap and rotor. I drove the car over an hour after he bought it and it ran fine with a fluctuating idle but thats it. It has newer wires and a newer cap, but the icms often have issues, ESPECIALLY when our cars overheat even once, you can almost always count on having a bad ICM because they are so heat destructive. Because you'll have your cap off anyways, replace your ICM. I have one, i'll give it to you.
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Old Mar 22, 2015 | 03:23 PM
  #11  
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Re: Car died when rear end blew

Alright sounds good and how long do you think the trans will last
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Old Mar 22, 2015 | 03:28 PM
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Re: Car died when rear end blew

Depends, on how hard you drive it etc. Why the reason it is going into gear hard. Luckily its not shifting hard. It shifts very smooth, just goes into gear hard. May be an easy adjustment. I see your local, PM me your address so I can drop off or send you a new ICM. Free of charge.
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Old Mar 22, 2015 | 04:00 PM
  #13  
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Re: Car died when rear end blew

Pm sent also do you or do you know of any one who can rebuild rear ends? I have bought all new parts
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