hey guys, i have a 95 e.g4 hatch, b16a1 swap with type r b18 head on it, p30 e.c.u.

i took the exaust manifold and decat off to have the manifold welded, its a feels manifold with 1 four wire 02 sensor where all the cylinders meet,
and there is 1 one wire 02 sensor in the decat, when i had the decat off it the wire broke on the single wire 02 sensor,when i put all back together ther was a red light on the dash for the lambda, i drove it for a while without conecting it back up, then i did connect it up and the light is still on,i done the codes and its throwing code 41..which is heated oxygen sensor heater..but it wasnt throwing any codes before i took the manifold off..

could welding have dammaged the heated sensor??..

and it seems to b running a bit dead and is bogging down sometimes ,and other times its fine..

is this the right manifold for this engine??
i know some of them use 2 o2 sensors but they are for different cylinders on the manifold, mine has 2 but the 2 of them are both after where all cylinders meet...

help is much appreciated

thanx

 

ok iv baught a bran new heated oxy sensor, changed it, reset the e.c.u,its not throwing any codes now but the lambda light is still on the dash and it wont turn off, any1 got any ideas whats rong??
and its still bogging down when i put the foot down..any ideas??

map sensor maybe??

 

i need one too..

 

is your car bogging down too??
have you tried vacuum leak test??