Code 45 rich
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Joined: Sep 2006
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From: Paris
Car: Camaro'89 TPI
Engine: 305 Ci
Transmission: Auto
Code 45 rich
Hello
I am here new in the world of the camaro of the other dimension of the Atlantic. I have a camaro iroc of 89 with one 305.
I have a code 45
O2 is new, the TPS also and I always have the same code after having disconnects the battery. The engine turns badly with odor of gasoline and black smoke to acceleration. The scanner indicates a tension of petrol station which varies (8V with 12V) the rare times or the tension is of 12V the engine turns nickel. Already had that?
Thanks
I am here new in the world of the camaro of the other dimension of the Atlantic. I have a camaro iroc of 89 with one 305.
I have a code 45
O2 is new, the TPS also and I always have the same code after having disconnects the battery. The engine turns badly with odor of gasoline and black smoke to acceleration. The scanner indicates a tension of petrol station which varies (8V with 12V) the rare times or the tension is of 12V the engine turns nickel. Already had that?
Thanks
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Joined: Jan 2000
Posts: 19,655
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Niko,
Welcome Aboard!
Pardon my ignorance of the language, but if I understand your question correctly, your engine is experiencing a rich condition reported by the ECM (Code 45) and have installed a new oxygen sensor and TPS. You are also noticing excessive smoke, and a fuel odor in the exhaust.
Since your vehicle is described as a 1989 IROC, I'll presume it has the 305 TPI engine, with eight injectors.
The fuel pump should receive 12VDC. If the voltage is lower, that would tend to reduce the pump output pressure. In your case, low pressure is not the problem. Excess fuel is being admitted to the engine, and is likely from one of two sources:
With the fuel pump running, remove the vacuum line from the pressure regulator and check for the presence of fuel. The vacuum line should have no fuel, and the regulator vacuum connection should have no fuel. If there is any liquid fuel, the regulator diaphragm has failed.
If the regulator vacuum line is dry, as it should be, you will need to investigate the injection system.
Welcome Aboard!
Pardon my ignorance of the language, but if I understand your question correctly, your engine is experiencing a rich condition reported by the ECM (Code 45) and have installed a new oxygen sensor and TPS. You are also noticing excessive smoke, and a fuel odor in the exhaust.
Since your vehicle is described as a 1989 IROC, I'll presume it has the 305 TPI engine, with eight injectors.
The fuel pump should receive 12VDC. If the voltage is lower, that would tend to reduce the pump output pressure. In your case, low pressure is not the problem. Excess fuel is being admitted to the engine, and is likely from one of two sources:
- Any one or more of the fuel injectors could be stuck open, causing excess fuel to be admitted to whatever cylinder(s) the injector(s) are serving. The injectors could also be electrically held open by a grounded wire in the injector wire harness or failure in the ECM.
- The other common cause for this is a ruptured diaphragm in the fuel pressure regulator. This would allow fuel from the pump to flow through the vacuum line attached to the pressure regulator and flood the intake plenum.
With the fuel pump running, remove the vacuum line from the pressure regulator and check for the presence of fuel. The vacuum line should have no fuel, and the regulator vacuum connection should have no fuel. If there is any liquid fuel, the regulator diaphragm has failed.
If the regulator vacuum line is dry, as it should be, you will need to investigate the injection system.
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