can anyone tell me what to do to helping fix the code 45 on my R. i replaced the primary o2 sensor twice, and i keep getting the same problem over and over.... can anyone tell what else should i try

 

what do you have done to your motor?

 

nothing done to it.. i just replaced the original 98 internal wiring harness for the 2001 wiring harness in order to get the chip-key on my R.. i reset the ecu and the check engine light goes out. but after i drive a little it comes back up with the same ecu code 45


[Modified by sytema, 9:28 PM 2/16/2003]

 

so the car is bone stock except for the wiring harness change?

 

I have the same code 45 on my car, and the only mod was vafc, but its not on the car anymore, but i still get the code

 

yes the car its bone stock.. the first time i got the car i had the scondary 02 what was missing, so i install one. and check engine light was off.. then like 2 weeks after that i started getting the primary o2 sensor problemm..

 

primary o2code and systemtoo rich/lean code are different. which is it

 

I get the too lean/rich code (code 45) and it runs way rich at idle, so much that it can't stay running when coming to a stop. And also it seems to get really hot under the hood after only running a short while, even with the hood open.

 

and what do you have done?

 

I had a vafc, but its out now, but I still get the code. It was weird, I had it in, and verything was fine, but then I put in an aem cai and after that i started getting the problem.

 

and did you try resetting the ecu? if so, how did you reset the ecu?

 

i pulled the fuse under the hood, thats how the helms said to do it? right? and this problem has been around for a while now, and even had it looked at a local shop, and they reset the ecu. it ran ok for like 20 minutes after they looked at it, but then it was back to normal. is there another way to reset the ecu besides the fuse?

 

pull the neg battery terminal.
how do you know its running rich at idle?

 

I can smell it? if i can smell gas while its idling, that would be running rich, right?

 

yes i reset the ecu twice by removing the neg from the battery.. i think the car its running rich. everytime that check engine light comes on.. the car doesn't perfom as fast as it was.. the car slows down on power...

 

check your plugs
check fuel pressure

 

someone told me to change the fuel filter maybe its now good, since that's the original fuel filter and the car has 64,000 miles on it

 

filter is cheap. id do it.

 

i will try that tomorrow maybe i get that problem fix.. any sugggestion on lowering springs for my R... want to lowered but want to keep the same good R suspesion

 

I just recently replaced my plugs, the old ones were so black, after only about 7k miles.