chk eng light flashes on start no power at times slow speed when warm

Asked by May 07, 2011 at 01:05 AM about the 1995 Ford F-150 XLT Extended Cab SB

Question type: Maintenance & Repair

chk eng light flashes 3 times on start, revs to 15-1700, slow to drop rpm. computer showed ox sensor, replace still have problem. Also after its warm sometimes no power at low speed, seems like reduced power at all speeds sometimes. any ideas?

3 Answers

as for the ses light it is normal for it to come on,does it stay on or go off at start up,other sounds like the cat converter is stoped up.

ok, Is it normanl to flash 3 times, I thought normally it would once illuminate and then go out. Also its a 302 v-8 which I left out, I felt exhaust it seemed forceful and hot, is there a more precise way to tell?

flashing seems right,as for the cat most shopes will do this for free,is called the drill test drill a 3/8 hole in down pipe befor cat converter drive it see if it is better or the same,eather weild the hole or put a screw in it.

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