2003 vue took cat off replace throttle sensor still runs rough anpipe to man. gets red lost of power light stays on.don't have money to take to a dealer.
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2 x oxygen sensors --one after each cat converter
there are also 2 x heated oxygen sensors ( different operation and reporting system) that are before the cat converters or in the exhaust manifolds run the fault codes to find the faulty sensor and it probably isn't either o2 or ho2 sensors
The obd light with tell specifically what it is, is it gas or rotten egg - the latter means catalytic converter, gas smell probably flooded or not firing on one or more cylinders, need more details. Also, if the light is flashing it's warning of catalytic damage - raw fuel hitting the cat, smell could be heat from cat trying to burn off raw fuel,it will glow red hot.
check that your map sensor is getting direct vacuum. if it's mounted directly on the throttle body, take it off and see that the vacuum passage is not clogged up. also check that it is getting voltage and that the computer sees it. Your map sensor and tps are responsible for how much fuel goes into the engine when you are driving; the o2 pretty much only regulates idle mixture. also see that your egr is not stuck open.
Only things that would cause that are, most likely, the Idle Air controller, the Throttle Position sensor, or possibly a vacuum leak. If it continues, you will get a check engine light eventually.
on the back of the throttle butterfly is a sensor that controls the amount of fuel and it has carbon paths inside it ands i think this is the one causing your problem ,
The only way, for shure is to go to computer diagnostics. 99% sure that this is some engine sensor, buy only diagnostics will tell who. (130,000 miles, hm lamda. it have only 150,000km live)
Yup. The throttle body connectors have a history of failing on these cars. Replace the throttle body and the wire connectors that go to it, and you're back in business. Not terribly difficult and you can get the parts from any dealer. Saturn actually has a bulletin out on this problem but they won't cover it unless you're under warranty - no recall for this.
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