rough idle...smoke from defroster
ok, so i really need to know what's going on. my car is a 1987 chevy celebrity with 104,000 miles on it. today it suddenly decided to idle really rough (when i opened the hood the whole damn engine was shaking). to top it off, after i threw in some coolant, smoke started rising from the defroster, but that stopped when i turned the defroster on. if it were just the rough idle, i know that it could be in need of an oil change (it is due this month for one), but seriously, i don't know what could cause the problems and i have no clue if this is serious or not. please someone help me!
there are so many things that can cause rough idle, can you give more information? did the car recently overheat? is there any fluids leaking on the engine? are you getting any smoke or steam from the exhaust? when checking for steam, remember to wait until the engine has run for awhile as condensation can build up in your exhaust during the night. if you cannot tell if it is smoke or steam, hold a blank sheet of paper behind the tail pipe, if it is oil smoke, then oil dots will show up on the paper.

some things you can do and check;
check the spark plug wires, make sure they are tightly connected and not chaffed, broken or burnt.
check your pcv valve for excessive oil or clogging, (it will be in a rubber housing or hose leading from your valve cover to your throttle body/carburetor)
i don't know the engine setup in that model, but if you have a distributor cap, check it for cracks and wear, also check the rotary cap.
check all rubber vacuum hoses on the engine for cracking.
if you can afford it, change the spark plugs, plug wires, rotor and rotary cap, these parts all need to be changed over time and your car is getting older now.
the grease that is their may be thick. get your hair dryer out and warm the total parts that rises and falls when you move your lever.  

continue to move the lever while you're heating the parts. you should notice a big change. try to clean off any old grease. after you do this use some good synthetic oil on the moving parts. the clutch might be smelly, but is it slipping or doing anything else untoward. clutches are a regularly reported problem on one-tonne utes, which suggests most are borderline in capacity. if there is a problem with the functioning of the clutch, approach mazda again about replacing it. if there isn't a problem think about replacing the clutch with a heavy-duty one that's more capable of handling your towing needs. maybe the smoke is coming from your *** I'm not sure on your truck but mine has relays. If you do have a relay getting hot then you need to check all your wiring from the headlights back. Check the switch also. May need 1 0r more coil packs replaced,or it could be what happened to my 2000 4.61 lifter expanded out and wouldnt collapse,causing the rocker arm to fall out of place and the valve could never open...try unplugging 1 coil pack at a time while running and listen for a change in the way it runs,if there isnt a change then its probably a bad coil pack,find a cylinder that runs and swap the coil packs,if no difference then its probably the valve staying shut. yikes, this can cause the damper film to stick together and result in “damper lock” . . . .

i suggest refill, open the front cover and trick the leaf switch so the front cover can remain open.

run a powerful cleaning on the channel pair and watch for ink movement. it should go pretty fast. contin… hard to describe this, but remove the knee bolster and remove the upper mounting screws and remove shifter indactor and the steering column 4 nuts and lower down to get the upper bezel out, sometimes it is hard to pull out, then remove the 4 screws and pull the speed head out and unhook the rear wiring harness Hi

That is something we do not assist with on these forums. You will need to seek help from law enforcement. See this thread from Adobe Staff: [FAQ: Can you help deblur or improve license plate detail?](https://forums.adobe.com/thread/2636455) 

~ Jane general procedure: make sure the engine is cool. loosen hose clamp where lower radiator hose attaches to engine - pull forward. place clean pan under hose to catch coolant that might spill out. pull hose off. catch coolant in pan. remove bolts on the fitting that the hose was attached to. remove gasket. remove thermostat (note how it was positioned and which side was facing out before removing -- there may be an alignment notch). install the new thermostat (the way the original was sitting,with the little "barbell" at 12:00) and gasket. re-attach hose fitting w/bolts. re-attach hose and clamp. put coolant that spilled out back in radiator. start engine and allow to warm up and check for leaks. note - if you need to remove your alternator so as to access the nuts holding the thermostat cover remember to disconnect battery before removing the alternator leads to prevent shorting. good post on parts location and repair procedure. only thing i'd like to add is antifreeze has a limited life before it loses it's ph balance and will turn acidic or base, either one will cause corrosion in the cooling system. loss of additives can also cause the cooling system to start acting as a ground conductor which will damage the cooling system. there are many different ideas on when to change, i try to change mine every 3 years or 24k miles. if you want there are test strips to check ph balance, protection temp and phosphate levels (prevent oxygen molecules from collecting around cylinder liners and etching them - usually more problematic on diesels). hth, dave Actually, under the California Implied Consent/Admin Per Se laws, you may have something to worry about. I would do two things if I were you: 1) check with the California DMV to make sure your driving status is still good so that you don't add to your sitaution by getting a driving on a suspended license charge; and 2) contact a local DUI lawyer for a free consultation to make sure you haven't missed anything (doesn't mean you have to hire anybody... just call so you know for sure rather than relying on this forum). See the source below for information on the CA DMV and implied consent for DUI cases. There are also links on that page to all of the relevant official CA DUI guides. Good luck with your case.