How do I fix an engine that seized because of no oil?
Since you are even asking this question in the first place, I’m assuming that you are perhaps not aware of what it means to seize an engine from oil starvation. When you starve an engine of oil, things start to weld together. This is why engines seize. Things can even weld together to such a degree that the engine (or at least certain parts of it) is literally not repairable. I have seen, for instance, cams that are welded to heads to such a degree that the only option is to throw them away and replace. The same can go for crankshafts or even pistons in cylinders.Regardless, even in the best cases, an engine rebuild is in order. Given that most (if not all) rotating and sliding surfaces in the engine are likely damaged, you will probably be replacing all bearings, pistons, rings, camshaft, rockers/lifters, and oil pump (among other things). You will need to rebore the block and probably regrind the crank. And if the engine is an overhead cam engine with machined surfaces in the head for the cam(s), you will likely be replacing the head(s). Needless to say, this is going to be a very expensive, laborious, and time consuming process. And it may or may not be worth it. Oftentimes, unless there is something REALLY special about the engine (like a rare engine, numbers matching classic car, etc), replacement is a better option. Rebuilding may also be a good option if you want to upgrade the engine internals for performance reasons. But even in this instance, you must carefully consider whether the engine is damaged beyond reasonable repair. It might be better here to start with another longblock.When it comes to replacement, there are a few options. You can often purchase low mileage engines imported from Japan for a fairly low cost. For Japanese cars, this is a GREAT option. Alternately, you can almost certainly pick up a used engine from a salvage yard or private party on craigslist for FAR less than it would cost to rebuild your current engine. Buying a rebuilt engine is another option. This is more expensive than the previous two options. But an engine from a reputable rebuilder can be in basically new condition and last a long time.
How do I fix my car having a rough idle after replacing the alternator?
You're right to assume that something else going on. Because it is!Personally I'd check to see if the alternator is providing the right amount of voltage. it's not impossible to get the wrong part installed. and when I say that, I don't necessarily mean you chose the wrong part, but during the assembly line a part they grabbed while assembling the alternator could have been or of spec or something. Check the grounds. A lot of the time, over years of use a little sand blasting or sand papering of the hookups does help. while running the engine, disconnect the battery. A poorly performing battery can drag the entire system down. check to make sure your AC ain't causin' problems too. make sure the clutch is spinning or not spinning when not being used. double check the water pump to see if it was messed up. lastly check all your ignition wiring too. depending on the model year and brand, it might be chatty with obd2. if it's carbureted, obviously you won't get any feedback. if it is obd2, there might be information in there that can give you an idea of what's going on. so get a reader and check. also with modern fi engines, they'll run rough after a battery removal for a while. make sure your fuel economy hasn't been affected, if it has, it's a clear indication that something is wrong.
Speaker sizes for 1997 Saab 900S?
http://www.crutchfield.com/app/car/carse... Enter your vehicle imformation and it will tell you what size speakers you need and give you aftermarket stereo information.