What is wrong with my Chevy,it goes into limp mode,occasionally?

harleychevymick

New Member
Have a 92 Caprice that drives o.k but out of the blue it will go into limp home mode,It reads code 42,ECM. what is it,it has been in the shop loads of times and they cant sort it. It has a new engine,with less than 500 miles on it, and I cant go 5 or 75 miles without it happening. If I turn off the ignition it resets.And will drive o.k again, for a while.Help,please, its driving me mad.
 
Top