Hello all:

91 Bronco 351W

KOEO code 11
Continuous codes:
334 closed valve position
813 FIPL signal voltage too low

My questions are these:

1) Being that this is a 13 yr old truck, would it just be worthwhile to replace the EGR Valve assembly including a new EVP Sensor to fix the indicated code problem?
2) If I do the above, what other problems could this indicate that may not be fixed with the swap?

3) Where do I start with the 813 code? What am I looking for?

Thanks in advance.

 

You may find this link useful.

http://www.broncodata.com/tech/codes.htm

Sorry but I did not find the 813 code.