We got a 93 integra here that is turbo with an SDS aditional injector controler, recently we got a 43 CEL that says the fuel supply is defective and the A/F meter is now saying lean all the time...what can it be, we are running the stock pump at 14 psi...2 weeks ago even with the stock pump there was no trouble and we were able to get a rich mixture at WOT... what can be our problem thanks...

 

u alwasy get a bigger fuel pump when ur running boost ur engine needs that extra fuel even if u dont think it does

 

we got anholley fuel pump but not installed yet, but the thing is that the negine runs witout problems during like 2000 km an after the trouble started, maybe the fuel pump was good for a short amount if time but now got tired up ( stock pump 270 000 km )

 

did u check the filter on the stock pump?

 

i had the same code, turned out to be my ground wire at my thermostat was loose!

just a thought.

shawn

 

we ll try a new O2 sensor by tomo to see if its that...