Squeaky belts bad smell coming into car check engine light flash

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Diagnosing Belt Noise squeak or squeal on Serpentine Belt

How to Fix Squeaky Belt figure out where the squeak is coming from

it could be one of the belts. if you put a little wax or brake fluid on the belt in a couple of places and the squeak goes away then you either have a loose belt/s or the belts/s need replacing. if no change it could be the timing belt making the noise.

The check engine light flashing is a pretty much universal sign that you have a misfire that is bad enough that a lot of raw, unburned fuel is being dumped in to the Catalytic Converter, to the point that it could be ruined if the problem is not taken care of very quickly.

He is most likely talking about the idler pulley.

have your obd II CODES READ this will give you more of an idea what is going on with it. most auto parts stores read these codes. If you are smelling rubber check your serpitine belt for where and if it looks good take the belt loose and check the rest of the components that the serptine belt runs on altinator, water pump,powersteering pump, pully tensioner, other pullys ext.

sounds like this may be a bad drive belt. check belt for cracks and glazing. while belt is removed you may also wish to listen to pulleys while spinning by hand.

yes, it could be the idler pulley going bad.
check it out

or the belt itself is almost done.

replace belt every 50,000 miles

light come on or flashing

The reason the check engine light is flashing instead of on steady is because it is missing bad and the car companies did this to tell you to stop the car as soon as possible to prevent damage. That is the only time the light will flash off and on instead of being on steady.
The cause is a little harder to diagnose. It could be a fouled spark plug, a bad plug wire, an injector, stopped up fuel filter. I can't remember if that car has the distributer or the coil packs but you could have a problem there. If you have never changed the spark plugs or fuel filter, it is well over a hundred thousand miles to do so now. They say to change them at one hundred thousand but 50 to 75 thousand is better and you will get better mileage. The fuel filter needs to be changed every 20 thousand miles now days because of all the cheap gas we have to put in the cars.
This is for mechanics or technicians. If no one out there believes me about the mileage on the fuel filter, then take the filter off and see what comes out the back. Looks like black water to me.

sounds like a bent push rod or bad starter