It dies out of the blue. Sometimes at stop signs, sometimes going down the road. It keeps going through catalytic converters as well. We have changed spark plugs and wires, coil, coil wire coil pick-up, both map sensors, crank sensor, fuel pump, exhaust manifold, muffler, starter, power steering pump, water pump, Help.

It could be the mass air flow or manifold absolute pressure sensor (MAP) ; usually has just one or the other. The idle air control valve can also cause this. Sometimes the O2 (oxygen) sensors can cause this as well. If it runs fine going down the road then I would check the Idle Air Control Valve first.

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could be ether of these. try unplugging the front o2 sensor see if it runs better. if so its that o2 try unplugging the rear o2 if its better its that o2. by unplugging it the computer just selects an average input of a good o2. could also be many other things but start with that and I would change the fuel filter maybe its clogged

have your battery checked my dodge truck does the same thing.

Might be your fuel pressure regulator.. also your car might be vapor locked.Next time it shuts off loosen your gas cap... If you hear it sucking in air... that's your problem...or your catalytic converter is clogging up...check the sensors on the pipes..If there bad it tells your car it needs more gas when it really don't...you will smell gas

The loss of coolant, overheating and running bad could add up to coolant leaking into the engine. The Dexcool antifreeze used in the GM vehicles has caused gasket failures in the upper air plenum and the lower intake manifold. This could allow the antifreeze to be pulled into the combustion chamber and the oil. If there is no visible external leak, then this is probably what's happening. Sometimes the gasket leak will show up as a very small and difficult to detect puddle somewhere around the gasket/engine mating surfaces. Also look for signs of coolant in the oil. If it has gotten into the combustion chamber, then it has probably ruined the O2 sensors and catalytic converter. The only solution is to pull the upper and lower intakes and replace the gaskets. Change the oil and filter. DO NOT put Dexcool back in the radiator. Use a green antifreeze that is labeled compatible with aluminum engine parts and radiators. Replace the O2 sensor. The catalytic converter might have survived. Get it running first, then worry about the converter. Good luck to you, and try to have a Merry Christmas.

When i'm stopped at a light or sign my cars rpm's go down and my car shakes and sometimes either acts like it wants to die or just dies

Check the Catalytic Converter. Sometimes when they get plugged the guts will settle down when cold but once they are warmed up they expand and starve the engine.

check for clogged catalytic converter

I have a 1998 Staurn that has non-stop transmission problems so the whinning they tell me is normal sometimes for the saturn wat else does it do

Did you know Jeep did a recall and paid for replacement of catalytic converters on 1996 models (don't know about any others) - they reimbursed me for work done, up to a point - hope this helps!