curt9021

Ok I just replaced the fuel filter, new rotor, new cap, ngk wires, new plugs, and bought the best fuel system cleaner that I could find..... the car lagged when I first got it... as if the wires were arcing and causing the vehicle to lose just about all power. When at idle it is pretty good every now and then it tries to die out but it will catch itself and come back up to normal idle. I held it at 3000rpms and by itself it dropped to 1000rpms with my foot in the same place as where I had it at 3000rpms. It sat and sputtered and then came back up to the held position. I dont know where to go from here without just throwing parts at it. Someone any ideas???

Thor294

get a scan tool and see what the car is seeing.

check fuel pressure.

Former User

CEL codes?

Ignition/mechanical timing off?

curt9021

The only code that is coming up is a o2 sensor. Bank 1. I have not changed the timing belt and water pump yet that is this week when I get paid.
When im driving it if I horse on it none of the problems are felt or even come up it drives fine. But when I baby it is when all this is happening.

Former User

Post the actual code.

Check the ignition timing with a timing gun.

curt9021

P0133
bank one sensor one

curt9021

And there is an exhaust leak but after both o2 sensors. And its a minor gasket leak.

Former User

If you reset the ECU, does P0133 return? Where exactly is the exhaust leak?

Trim - EX, DX, CX,..?

curt9021

Behind the cat the gasket that actually connects to the next pipe and yes the code returns I checked it today and it is actually in there 2 times.

curt9021

And its a EX

Former User

Fix the known exhaust leak. If the code returns, replace the O2 sensor. You need to eliminate the CEL code. Then go from there.

curt9021

Ok... thank you.

Former User

By the way - primary O2 sensor.

Thor294

that sensor is used for fuel delivery while in closed loop. Fixing that will probably help a lot... BUT playing devil's advocate here. Does the car run OK when starting up? or does it always fall on its face? what if you floor it?

Former User

If you unplug your primary O2 sensor, the engine will run fine, just rich.

Thor294

especially if the sensor is throwing out a bunch of BS lol

JakeZimmermann

I'm having sorta the same problem. I was driving and it started to bog down. The it idled crappy. Now it wont start at all. It's throwing no codes for me. I put a new fuel filter, plugs, MAP sensor, and fuel pressure regulator in it. Tired of throwing parts at it. Was wondering if anyone had a clue as to whats sgoing on with my car??? Fuel pressure is good also.

Thor294

Have you tried using the gas pedal when you try to start it?