Ok i have a d16z6 in a 92 hb, anyway i just put in a new timing belt,water pump, and headgaskit..ok well the car starts and runs fine untill it warms up then it sputers real bad...so is this a messed up head or could it be the ecu..i say the ecu because it was chiped back in 96 with a denon i think.and i think it might be bad and the check eng light is coming on...im just lost and it's driving me crazy!!..
any help would be sweet ...thanks

 

if you have acces to another computer use that and see if thats the problem. I know that does not help much but thats all I could think of

 

ok im going to check that out and see..i will let u know

 

hahaha this is something really stupid to say but did you put the headgasket on right?

 

im pretty sure i did..lol..why would that do that..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by biggishjay &raquo;</TD></TR><TR><TD CLASS="quote">im pretty sure i did..lol..why would that do that..</TD></TR></TABLE> well im not sure why it would do that but when a buddy of mine got he's motor built by some small shop, they put the headgasket upsidedown and made the car run like ****. we took the head apart and was like WTF! Fliped it and it was fixed. i dont see how they could mess up. it says UP on it.

 

im pretty sure its on right ..lol..but it was doing this before i replaced all this ..but it was all so overheating..but im going to try a diff p28 and see if that is it..if its not ...wonder if the 02 would make it run like that?

 

It is your 02 sensor. Your 02 sensor doesnt start to work until after your car is already warmed up. Happened to me so i just replaced all the 02 sensors and it was good.AND yes your 02 sensor would cause this to happen because it tells the engine, AFTER it has warmed up, how much fuel to use according to the airflow coming into the engine. If the 02 sensor was messed up it would send unwanted amounts of fuel into the engine causing it to bog/sputter or hesitant.