so i have a 95 coupe that i bought from a friend not running for $500. It had low compression in a cylinder so i said f that motor. I had a d15b8 in my backyard. I put it in and i cant get rid of this check engine light.... the stock motor in a 95 dx is the d15b7. my friend has a 94 hatch thats where i got my d15b8 motor from. but he popped a d15b7 in and has no problems... why is this? and why when i hook up a scanner to my car it cant read anything?? please help.

 

what r the cels?

 

when i hook up my scanner to it, it wont read. it says no connectivity. so i cant check the code, but when i hit clear codes it clears it for a second and then it comes back...

 

ok so use the jumper method....
http://check-engine-light-codes.blog...retrieval.html

 

Depend what year ECU you are running and what year is your D15Y8.
I swap out my D15Y8 for D15Y7, I had to convert my O2 wires, and ECU for that year model.

 

code 10 and 41 came up. intake air temp. sensor and heated o2 sensor. i have an extra heated o2 sensor but where is the intake air temp. sensor?

 

IAT is in back of intake mani should be a white or brown sensor screwed into back of mani near dr side of motor

 

so i have to replace the sensor on the harness huh

 

no it is not on the harness it is in the back of mani as i said intake mani and it may not be bad i had same code for my o2 and my IAT sensor was bad and threw O2 code

 

so how can i go about clearing this code? i need to clear it so i can get my car smogged

 

well the IAT sensor may be causeing the O2 code and the IAT sensor is cheaper than the O2 try replacing the IAT first then pull (+) term of battery and pull ecu fuse from under hood fuse box for 30 sec-1 min then check codes again see if they go away

 

ok. ill try that and get back to you

 

u can pm me if u need more help

 

thanks ill keep you updated