87 iroc

my 87 5.7 iroc will set check engine light go to limp home mode. not set a code but turn off key. restart and runs fine have checked all connectors and grounds. any body else had this happen/

Does this only happen when the car is warm? Or is does it just happen at odd times?

Had this happen once..it was a bad pin on the MAF connector. Yours could be MAF related also.

Does this only happen when the car is warm? Or is does it just happen at odd times?
it just happens ay about 120 degrees. replaced the maf conn no improvement thanks for the ideas. i replaced all senders with GM originalreplacementparts buy still does it