nothinbutroad
Member
- Joined
- April 29, 2012
- Messages
- 19
- Reaction score
- 0
- City, State
- Grand Terrace
- Year, Model & Trim Level
- 1991 ford explorer
So I have a 91 Explorer that just failed smog because it was running rich. about 7 years ago I had the same problem, I changed out several sensors on the truck, and the 1 that finally passed it was the O2 sensor.
This time around I ran my scanner on it, KEY ON ENGINE OFF I got a code 14 the electronic control assembly "has detected an intermittent loss of profile ignition pick up signal during recent operation" and during the KEY ON ENGINE RUNNING test i got a code 11 which is system pass.
Can the ECA/ECM make the vehicle run rich? or does it send a signal saying its running rich? or does it send a signal to the 02 sensor making it run rich, or making it read that it is running rich?
should I simply replace the ECA/ECM since that is the only code given?
since the O2 sensor was the problem last time should I replace that? or since both could be the issue should I just replace both?
why would the car run rich and fail smog but get a passing code with the engine running? shouldn't it give a code that it is running rich?
This time around I ran my scanner on it, KEY ON ENGINE OFF I got a code 14 the electronic control assembly "has detected an intermittent loss of profile ignition pick up signal during recent operation" and during the KEY ON ENGINE RUNNING test i got a code 11 which is system pass.
Can the ECA/ECM make the vehicle run rich? or does it send a signal saying its running rich? or does it send a signal to the 02 sensor making it run rich, or making it read that it is running rich?
should I simply replace the ECA/ECM since that is the only code given?
since the O2 sensor was the problem last time should I replace that? or since both could be the issue should I just replace both?
why would the car run rich and fail smog but get a passing code with the engine running? shouldn't it give a code that it is running rich?
