i am now getting a CEL#43. Would this be because of a walbro 255 fuel pump?I

Any thoughts?


Modified by Xrated-Eg at 7:03 PM 1/27/2005

 

43 Fuel supply system

Bad fuel tank maybe? Try going back to stock and see if it goes away, if it does then its probably the fuel pump.

 

It was in for a little while, then that and a 41CEL popped out of no where. Car idles kinda lumpy? I am baffled

 

bad connection somewhere?

 

i say bad connection. take a look at those, it could be a easy fix.

what is your rail pressure at. do you have a FPR..

should be around ~43psi

platinum.

 

Its not a connection. Fuel pump has been in the car for a good while. It is an LS with I/H/E. I had the fuel pump in with the b16 i just took out. No problem. I put in an LS drive it for a week and get this CEL. I am going to try seafoam and a refill with some sunoco 94.

I wasn't sure if the PR4 ECU i am using now could see something a chipped P28 didn't? I didn't know the ecu could check fuel pressure.


I guess i didn't word my question good at all. Long Day.

 

"Code 43 means that your ECU is seeing an irregular voltage reading from your O2 sensor. It is usally because the O2 sensor gets covered in crap because you are running too rich. Swap it out to see if that works."

Got that from a guy from another forum

 

That would explain why i see it with a code 41. hmm.

 

Most likely your o2 sensor

 

I will find out today! Thanks for the help!