i have a 94 acura gsr . recently ive been getting a check engine light when i keep a constant speed for a certain period of time. i checked for codes and i got code 43. i know this deals with the fuel system. im not sure if its the o2 sensor. i changed the fuel filter, injectors seem to be ok, and im running seafoam through the fuel tank. i cant figure out what the problem is. i also know i have a leak in my exhaust manifold where it bolts to the block. i need help.

 

service manual said: Check the fuel pressure, fuel pressure regulator and also check for any vacuum leaks.

 

also, when i maintain a constant speed thats when the check engine light comes on..

 

no one can help me out?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rahxephon &raquo;</TD></TR><TR><TD CLASS="quote">service manual said: Check the fuel pressure, fuel pressure regulator and also check for any vacuum leaks.</TD></TR></TABLE>

Sure we can help. I'll break it down for you.....you're fuel pressure is screwy. Either you have an adjustable fuel pressure regulator and messed with stuff or you have a bad fuel pump, regulator or a vacuum leak going to the regulator.

Thus,
Did you play/mod anything recently?
Is the fuel pressure regulator hooked up (vacuum hose in the top)?
Go buy a fuel gauge
Whats the gauge reading?
Check into testing/replacing the fuel pump or regulator

Thats what I'd try first....assuming I still had the stock ECU and not a chipped ecu.

 

had the same problem....i changed the o2 sensor and it went away....you got a faulty o2....

 

apparently i have a dinan chip installed (bought it like that) what now?