Been doing it for a couple days now, driving down (on the highway only) the Check Engine flashs randomlly, sometimes even looks like the bumps makes it light up, will stay on for a solid few seconds, then off, then flash again.
Seems to stay on solid whenever you really put your foot on the gas. Whenever theres a good load on the engine. Let off, light turns off, driving along @ 55mph flashes randomlly?
Could it be a loose contact/connector for something since it seems that the bumps affect it?
When I get off the highway, it's off and never comes on, not even with the bigest bump.
my 95 bronco did the same thing going down the highway...inbewteen 55-65 the check engine light would come on until i slowed to about 45...do the self testvery easy to do...but in the test i found it easier to not do the slash marks...whatever works best for you though