Engine stalling occurences
#1
Engine stalling occurences
Need help figuring out an engine stall issue.
When it happens, I get the lean codes P0171 and P0172.
Seems to only happen when the engine is warm, such as when we drive it around town, then park for an hour or so, then start it and it happens. Straight hot or cold doesn’t happen.
Also seems to happen more often when I’m parked slightly uphill.
This happened with the original engine, its rebuild version, and now with the Jasper engine (Ford dealer installed) so it has to be a sensor, not the engine.
I’ve tightly clamped all of the vacuum hoses, checked for vacuum leaks and have found none by my methods, and replaced all the old stiff hoses I could find.
When it happens, I can “clear” it by running the engine at about 2000 to 2500 rpm for about 20 seconds then it will idle fine. I get a smell of gas out of the tailpipe which tells me its rich. I guess the lean codes are adding the extra fuel?
Any suggestions please as to what else I need to check?
When it happens, I get the lean codes P0171 and P0172.
Seems to only happen when the engine is warm, such as when we drive it around town, then park for an hour or so, then start it and it happens. Straight hot or cold doesn’t happen.
Also seems to happen more often when I’m parked slightly uphill.
This happened with the original engine, its rebuild version, and now with the Jasper engine (Ford dealer installed) so it has to be a sensor, not the engine.
I’ve tightly clamped all of the vacuum hoses, checked for vacuum leaks and have found none by my methods, and replaced all the old stiff hoses I could find.
When it happens, I can “clear” it by running the engine at about 2000 to 2500 rpm for about 20 seconds then it will idle fine. I get a smell of gas out of the tailpipe which tells me its rich. I guess the lean codes are adding the extra fuel?
Any suggestions please as to what else I need to check?
#3
#5
#6
Okay, that's lean both banks. Follow the line from the PCV valve to the back of the intake, check the elbow for cracks and rot.
Could be a dirty MAF sensor. Could be a bad DPFE sensor holding the EGR valve open or a dirty EGR valve. Could be a weak fuel pump, clogged fuel filter, or a bad fuel pressure regulator. Could be dirty injectors.
Could be a dirty MAF sensor. Could be a bad DPFE sensor holding the EGR valve open or a dirty EGR valve. Could be a weak fuel pump, clogged fuel filter, or a bad fuel pressure regulator. Could be dirty injectors.