1991 Toyata MR2 Auto. Starts up good but when accelerating has little power. Seems like all brakes are on but the are all OK. Builds up speed to 40 very slowley. Car been standing for 6 years

engine light flashing means a problem needs immediate attention ----have the vehicle scanned most auto stores offer this service for free more than likely the viberation is what is setting off code

Possibly a fuel problem, check fuel pressure, run some injector cleaner through the tank, check for trouble codes.

Check fuel pressure

this seems to be an engine pressure loss. a leakage in the headgasket or headgasket busy blowing. an engine gets it's power through the pressur it builds up. no pressure, no power. a good mechanic should help you. don't take it to hyundai. they will rip you off. shouldn't be an expensive exercise. otherwise it could be the 4weel drive system busy saying goodbuy. a secondhand unit shouldn't be too hard to find. may be a little expensive though. it can also make the car not to accelerate. good luck.

check your tires

I had a similar problem and it turned out to be the brake fluid level. This may be an answer. Also have you had the brakes checked. The cruise control is integrated with the brakes. Any little thing wrong with them effects the cruise.

AUTO DASH SAYS 'REDUCED ENGINE POWER" TRANSMISSION FLUID SEEMS OK AND COOLANT OK. WHAT ELSE COULD IT BE?

this seems like an air fuel mixture problem.

Had same problem on a Nissan Patrol, happens more to me in winter time when some rust builds up around the cable (because the little rubber thing that prevents dirt from getting in the cable sleeve disappeared a long time ago - Normally I just lubricate it and it remains fine for another 8-10 months). Check accelerator cable for dents or splinters, if it seems ok, lubricate it and assemble again. If not, replace cable.

Sounds like your idle speed is way too high, should be somewhere around 800-1200 rpms. I would check for vacuum leaks.