My CEL keeps coming on in my '97 Accord. The code is p1491, which is for "Insufficient Lift" in the EGR valve. What I've done so far: I have, using a vacuum gauge, given the EGR @ 6-7 in. HG at idle causing the car to stall. Checked the electrical connections at the EGR solenoid (not valve) and have not seen voltage. I have also connected the EGR solenoid to the batt. And observed vacuum at the EGR valve.
My question is: When does the EGR solenoid get voltage (Under what conditions and how much)? Or, how do can I know for certain it is either the wiring or PCM?
have the same problem?
Tuesday, January 18th, 2011 AT 6:25 AM