E150 running TOO rich
Thread Starter
|
Freshman User
Joined: Nov 2003
Posts: 27
Likes: 0
E150 running TOO rich
I have posted messages previously about my E150 conversion van with a 351 motor running too rich. It was running GREAT until one day it started running way too rich.....hardly any power and poor gas mileage. The engine code is flashing 51. I replaced the O2 sensor,the coolant temp sensor and the air temp sensor which according to Ford's manual are the causes of code 51.
The van runs a tiny bit better, but still codes 51 and runs like a dog on hills.I thought maybe the cat convertor might be clogged. Anydody have any ideas??If you've ever driven an older carberated 351 with a choke problem that is EXACTLY how this stupid van is running.Ford doesn't know what to tell me. They want to replace this and replace that until they get it running-which is not the kind of mechanic that I am or was taught to be.Any ideas would be greatly APPRECIATED....
The van runs a tiny bit better, but still codes 51 and runs like a dog on hills.I thought maybe the cat convertor might be clogged. Anydody have any ideas??If you've ever driven an older carberated 351 with a choke problem that is EXACTLY how this stupid van is running.Ford doesn't know what to tell me. They want to replace this and replace that until they get it running-which is not the kind of mechanic that I am or was taught to be.Any ideas would be greatly APPRECIATED....
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
I would check the fuel pressure. You quite likely have a bad fuel pressure regulator.
You can also pull the vacuum hose off the FPR and check for gas in there. If there is gas in there the FPR is shot.
You can also pull the vacuum hose off the FPR and check for gas in there. If there is gas in there the FPR is shot.
