ok so my car starts up just fine... but if i run it hard, sometimes it dont wanna go to redline... but if i push it harder it will drive fine again... i was told that the fuel pump was changed at one time w/vinum one.. an i changed the fuel filter an it still throwing a code 43... its a 95 b18b motor running a obd0 ls ecu...

someone told me either the fuel regulator or the fuel pump might be clogged... how do i check those things....

thanks guys an please so shit talkin

 

try this. the fuel pump relay can be reset by unhooking the battery for 5 minutes, hooking it back up, then turn the ignition switch on and let it sit for a few 5 minutes. cut switch back off and then turn back on, you should be able to hear the pump running, try cranking the car. hope this works for you
good luck.

 

the car runs fine tho it just cuts off at 4,000 rpm an if you push it hard the whole time its fine... an it turns over smooth an everything