car will run fine as long as i dont push it but when i floor it and the rpm's reach around 4500 it just bogs and doesnt want to go any further. it only does it every now and then. could it be the fuel pump? ecu is also throwing out a fuel system defect code. need some help before i just sink alot of money into a problem that is probably way to easy to solve. oh, it a b18b1 "LS" in a 91 hatch. thanx guys hope some one can help out.

 

check for fuel pressure

 

make sure your ECU is pinned out right.
I'm having similar issues with my car, and I have narrowed it down to an ECU connection ;p (wires need switching)


Does it happen in cold/hot (or both?)

Either way, work your way through your CEL.
Clear it, and see if it happens again.

 

it does it at hot and cold, how can i check the fuel preasure. it ran fine forever and then just started doing this. i know the o2 sensor was bad but it was bad before the fucl( up. could it be a fuel pump issue. please, looking for help on the issue.

 

have you changed the fuel filter?

 

^x2 had the same issue a couple of years ago on a car swapped...guy didnt change the filter

 

ur tps might be goin bad is it popin through the intake and yea check ur crk sensor and tdc cnk is c1c2 and tdc is b10b12 i thnks good luck
anymore??? pm me


chesapeake auto repair m/t

 

thanx everyone will try it all

 

changed the fuel filter and car ran a little better but still does it every now and then. thinking it could be the injectors

 

I had similar problem check wiring to the injector clips and the clips themselves.