Ok its a stock 91 CRX D16a6 motor. Rebuilt with 11:1 compression pistons.
Throwing Code 1 on the ECU. Ive replaced the oxygen sensor, put on a B&M fuel pressure gauge and raised the pressure to 35 Psi, reset the ECU. Still kickin the stupid check engine light on after about 15 minutes of idling. What else could this be?

 

What kind of o2 sensor is it? Did you solder the connection? And did you run this same o2 sensor beofre you changed the fuel pressure?

 

tune the car using a wide ban 02 sensor, or a dyno with a a/f ratio meter in the exhaust tip and tune the car. Maybe running lean.

 

might also want to check the altinator.. alt belt... and battery... my car threw the same code when my alt. belt snapped


[Modified by cyris3d, 4:49 AM 12/6/2002]

 

Anyone else?

 

Pull the plugs and check their color... That will tell you if your leaning out, or running to rich.

Is that 35 psi @ idle?