1994-2002 [Subscribe to Daily Digest] |
Yes, could be a number of combo of things.
Basics, always remove and read the plugs. The right plugs? gaps? Battery connections and levels? injectors clean?
You should attend to these things before you post and report if you have done so.
Check your vac lines. The one from the TB to the MAP is very critical. It will cause a cel and perhaps limp home mod, with an adaption type fault code. Check vac lines for split ends and cracks. The larger hose from the TB to the evap electric valve has been found cracked at the TB by a few.
The O2 sensor does not care about an exhaust leak, unless the leaking gasses were to be washing over the outside of the sensors, which need normal air as an external O2 reference.
You can read the, or multiple, cel codes by turning on the ignition without starting and reading pulsed cel codes as they flash. Not all codes will display in this fashion. Autozone will read for free I think, but the codes them selves can be less than conslusive about what needs to be done.
A O2 sensor fault code does not mean that the sensors are bad, only that there is a detected problem with the signal. If the sensor bases do not get a good ground via the exhaust system you will get a code, and many dishonest or inexperienced shops will replace good sensors with new ones, when just removing and reseating the old one can yield the same results. You can find and trace ground prioblems with a good DMM. I have posted details dozens of times.
You can check the BPV your self, check its vac line, it is probably turing to dust by now. Remove hose at BPV. Do you get a VAC at the hose end at idle? If not, the hose is cracked or split, else the orifice in the TB is fouled up. Remove the 25mm discharge hose. Apply the vac line and remove, with a finger into the valve, detect that the valve seat is opening and closing. Don't pinch your finger. With another piece of vac line, apply suction to the BPV by mouth. You can easily tell if the diaphragm or spring chamber are leaking. You can totally qualify the BPV your self, and the connecting hose.
A defective BPV might not trigger a cel.
The ECU may be limiting your boost because of fueling issues. Do the basics and get the codes. Start from there.
posted by 66.139.120...
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