rb25 leaning out after warm up

Post by **alex37211** » Mon Jun 28, 2010 1:21 pm

I have an rb25det series 1 and it has been running lean since I got it. My spark plugs all turned white and it hesitates under load. I installed an innovate LC-1 wideband and it reads fine for the first minute or so until the cold idle falls and then leans way out to like 22. I replaced the fuel pump (walbro 255) and maf. Same symptoms.
Everything is stock and no trouble codes.
Any ideas / suggestions? Thanks.

Post by **R32ONP** » Mon Jun 28, 2010 5:15 pm

the ecus water temp sensor ??

Post by **alex37211** » Wed Jun 30, 2010 12:14 pm

Hmm... I think I will try that. Do you know which engine shares the same sensor? I have heard z32 is the same. Or 1998 ka24de. Some one said 1996 maxima which I guess is the same as the z32.

Post by **alex37211** » Thu Aug 12, 2010 11:59 am

okay I changed it and it didn't effect anything. The car still behaves the same.

Post by **Carl H** » Thu Aug 12, 2010 12:53 pm

what colour injectors are in the rail?
what does your fuel pressure look like?
have you changed fuel filters yet?

rb25 leaning out after warm up

rb25 leaning out after warm up

Re: rb25 leaning out after warm up

Re: rb25 leaning out after warm up

Re: rb25 leaning out after warm up

Re: rb25 leaning out after warm up

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