check engine light when i rev?

87mgte

87 Turbo Targa
Sep 9, 2007
536
0
0
34
Sequim
if i take it up to 4.5-5k in first or second, the check engine light comes on. i can keep drivin relatively hard or just cruising, and it'll randomly turn off. i need to check the codes and get back to you guys, i know, but i'm just wondering if this has happened to anyone else. :1zhelp: