The engine revs drop when it reaches running temperture

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Question about 2004 Hyundai Santa Fe

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The engine revs drop when it reaches running temperture

And hesitates, the fault reader says bank 1 is too rich. how can i put this right. it is a 2004 2.4l petrol engine

d_j_hunnam Jan 02, 2009

thank you for your solution,I'll give it a try

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Phil Goncalves · Accepted Answer · 2009-01-02T17:57:13.9700000Z

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Hi there.... This sounds like an oxygen sensor has fail for bank 1. you can try rep;pacing the sensor and see what happens. the oxygen sesor is located on the exhaust in front of you catalytic converter. There should be two ( one one either pipe coming form the engine). If I remember the santa fe correctly , Bank 1 is the passenger side bank of the engine. Hope this helps you out

Posted on Jan 02, 2009

The engine revs drop when it reaches running temperture

1 Answer

Phil Goncalves