ok i installed a new fuel filter and i noticed it got richer at idle. but still runs lean when ur driving and let off the gas. i took my wide band and put a bung at the bottom of the mani. and i went to connect it to notice that the rear o2 sensor wire is riped off so i found 4 wires and spliced then but it still throwing the 21 code im not sure the pattern of the wires but i matched it to the wires of the front o2 so it should be good except there was to black wires with a blue strip and the ffront o2 had 2 black with 1 blue and the other green as it lookeed like. im thinking now map sensor is causing this im not sure tho. maybe ill just buy all new sensors because im on the way of doing a 2.2 bottom end for thew nitrous and a powermax # 18 cam and aem cam gears and new springs and i dnt think the sohc is hydralic las adjusters only the dohc im bumed out on this now

 

and where can I buy a new pcm harness for the engine? and what do you guys feel about the map and possible pcm problem? and is there a wire digram for the 02 sensors so i cna make sure the wires are spliced right? and my fuel pump is brand new no more then 6 months old

 

go to junk yard for a harness. a map sensor can cause some problems if u have an extra one i would try it. http://www.autozone.com/az/cds/en_us...rInfoPages.htm
go here and check ur wiring see if that helps ya.

 

thanks that helped out alot but one more thing witch wires on the o2 sensor are the heater and witch are the sensor? there is 2 blacks and a white and blue i think 2 blacks are heater and the white and blue are the sensors???? any ideas

 

looking it up give me a few

 

this is what a neon freind says he look up the wiring...

my digram for the downstreem sensor says B/LBL and T/W for the heater wires
dark green and black for the two other ones

 

ok he says the 2 black are heater and the other 2 are sensor. so hope that helps

 

awsome im guna go change the splice again i just hope the sensor didnt get broken hopoking it up wrong. is there a way to test the 02 sensor? and wat wires do i test? wat ohms are the sesnor and wat ohms are the heater? i realy apreicaite all your help

 

idkabout the oms maybe the best thing to do is get another o2 or but and emulator mine has worked for 3 yrs now no problems and its cheaper i think.

 

if your running pig rich now dont you dare get a afx or even the mp pcm... it will get worse... your best bet at this point is the simulator for your downstream and you need to start thinking about getting a adjustable fuel pressure regulator so you can bring your static pressure down a bit...