I had this exact thing happen on my 98 Expedition Eddie Bauer. After changing all 4 of my o2 sensors the check engine light came back on. So I performed a complete tuneup while performing the tuneup I fould the vacuum line had been pulled from the PCV valve. I believe the shop my wife took it to last pulled it off for a repeat visit. I made sure both ends of the vacuum line were connected well after changing the PCV valve. I removed the codes and drove a couple hundred miles without the check engine light coming back on. In short, you probably have a vacuum leak or are needing to tune the engine. Both are easily accomplished.
I concur. Had the exact same problem with my 98 Expedition Eddie Bauer. Thankfully, I have an honest mechanic. Vacuum line was the culprit. Diagnostic codes indicated that all four O2 sensors needed replacing. Once 12 dollar part replaced, all codes cleared up and truck has run like a charm since.
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scanned codes don't necessarily give you the answer to the problem, just lead you to the answer. When the o2 sensor code came up, the sensor(s) should be then checked, not just replaced. Also I would think the probability of all 4 o2 sensors going bad at the same time would be approaching zero.
NO, but it will cause bad engine performance
the check engine light could stay on because of other sensors. for example,the power steering sensor could be bad...this will cause the engine light to come on and other sensors could cause the engine light to come on. just get rid of the van. most sensors when they go bad cost anywhere from $200-$600 just because of the location of the sensor. manufacture put sensors in hard to reach places to keep you from replacing them,so that you will bring it in to dealer and pay over inflated repair cost.
what sensors have you replaced?? i am assuming the oxygen sensors. i need a code number to tell you what is wrong. if its a p0420 its probabily the catalytic converter. mabye a p0141-mass air flow needs to be cleaned
Yes it will.
Every sensor on the engine and transmission can cause the light to come on.
Look to the ECU/sensors or airflow. Check the O2 sensors, air filter, etc.
Yes, just about any sensor on the engine could cause a no start.Yes, just about any sensor on the engine could cause a no start.
If your 2000 Ford Expedition is throwing a code 1132, then you should first try to change the oxygen sensors. If that does not remove the code, a mechanic will need to determine the exact cause.
Check out this link, this happened to mine Dodge Durango Maintenance and Repair - CarSpace Automotive Forums
Yes, it can affect the oxygen sensors and catalytic converter.Yes, it can affect the oxygen sensors and catalytic converter.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
There is no distributor on a 99, so there are a few sensors that can cause this. If you've had your intake replaced, or it is leaking, it could be the Cam sensor, which is located on the top of the engine, under the power steering pump, there is also a crank sensor (Is your tachometer working?) and lastly there is the ignition module which is located under the coil packs on the back of the engine.