EGR diagnostics.

Reply Subscribe

Thread Tools

Search this Thread

Nov 9, 2001 | 07:49 AM

Hartwood

Thread Starter

Freshman User

Joined: Nov 2001

Posts: 34

Likes: 0

EGR diagnostics.

I was wondering if anyone had Ford diagnostic values for the EGR valve sensor? What is the value supposed to be with no vacumn? What is the value supposed to be with vacumn, and how much vacumn? I have reason to believe this sensor is bad, but the Haynes manual is confusing me. In one part the manual says the resistance needs to 5,000ohms with no vacumn and 100 with 10hg of vacumn, then in the back of the book, it says not greater than 5,000 and no less than 100. Well to the best of my abilities I have measured 3,500ohms resistance with no vacumn and around 600 with 10hg of vacumn. Going by the one measurement it would seem the sensor is out of line, but by the second statment it might be ok. I do get a code back saying the o2 sensor is out of range and the EGR valve sensor is out of range. I checked the o2 sensor and it seems to be correct. I used my multi-meter and a propane torch to test it. It seemed fine and had the correct readings. I may have to just go and buy the Ford manuals. Thanks for your time,

regards,

Bryan

Nov 12, 2001 | 08:39 PM

pross

Senior User

Joined: Oct 2001

Posts: 135

Likes: 0

EGR diagnostics.

just a help full tip: if you replace the EGR sensor, make sure the small shaft is exactly the same length as your old one. Someone else in another post mentioned that the dealer had installed one in his truck and the shaft wasn't the same length as the old one. He indicated it took a while to figure out what happened. Apparently they won't interchange. Those books are hard to follow, I usually just buy a new one if it is highly suspect, or you could take a chance on a used one for a few dollars. '91 5.0 Lariat