[V8] Limp Mode?

[Speakoutprod@aol.com]

Driving to town today, I noticed the V8 was acting sluggish and think it may 
have been operating in Limp Mode.  I tried shifting into lower gears (I have 
an automatic) but no change.  I then turned the car off, restarted and drove 
around the block -- it seem to be working fine.

I've heard of limp mode but never understood its cause nor function.  Should 
I seek immediate help from a mechanic or look for an open window in a tall 
building?

Lastly, can you easily check the fluid level in the transmission?  It looks 
like there's only a fill port without a transmission dipstick.

Thanks,

Brad Hartman
1990 V8