I get vapor lock everyday in my 1992 buick grand margui v8 especially in the simmer here in las vegas. Whar do I do to fix it? What causes it please!

will not be a vapor lock as such but a vacuum in the system caused by a faulty EVAP system vent solenoid
run the fault codes first to determine if vent valve or solenoid of the purge valve

Could be vapor lock, fuel pump issue.

On the side of the Throttle Body,has wire going to it

Pull the spark plugs and turn the motor over a few times. On these cars they do not "vapor lock", instead you will need to replace the intake gaskets as they tend to mushroom and cause the vehicle to hydro-lock (usually in the #3-#5 cylinders). Also look forward to drilling out the #12 intake bolt as that is usually rusted into the block. Good luck

Never heard of that on a buick FI. When it gets hot does it cut off and restart later? More info.

The coil packs sit on top of them. The basically go straight down from the top. They are practically under the fuel rails.

When this happens have you noticed what temp guage said? if it was hot then you might try a lower temperature thermostat and flush coolant system.If it doesn't actualy get hot coolant wise then a vapor lock in fuel system would be unlikely to my knowledge, car has fuel pump in gas tank and is fuel injected.If you only take short trips in car cooling system,<thermostat,water pump,coolant level and radiator> could be at fault and only when running for longer periods of time might cause overheating and not noticed on regular days on short trips.

sounds like it needs a new switch

Low fuel pressure may be at fault, check the pressure at the pressure port on the fuel rail at the engine when this problem manifests itself. I think the pressure should be around 40 PSI on a V8.