1997 Jeep Wrangler o2 sensor

[quote:c5ae7e3a25="pillonchri"]Engine Performance problem
1997 Jeep Wrangler 4 cyl Manual 90000 miles
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Hallo I think I have a very big problem with my jeep tj 2.5, I've been aleady 9 times to different workshops but nobody was able so repair my jeep.The problem is that i drive only 4 km. with one liter fuel because the o2 sensor always get broken "as they say" I already change it 9 times plus one time the temperature sensor and always get broke after 2 or 300 km(injector as well have been cheked . It looks like here in germany they are not able to repair a jeep and i'm loosing any hope.thanks so much ... Chris[/quote:c5ae7e3a25]

Hello,

Ok, is you check engine light on? If so have the codes pulled your local auto parts store should be able to do it and possibly for free. Post codes here...

How is the vehicle running? Describe how it runs....

Hi
The engine light was on only one time showing an error of the map sensor....I really don't know if can be that sensor who broke the o2 sensor or can be the pcm..... the car is running really bad below 3500 rpm like there is too much fuel, and comes out really dark smoke.I already check the car in the workshop with the scan tool but no mistake were shown.At the moment we think that the o2 sensor is broken again but no error code comes out.What do you think, change the map sensor or the pcm can be a solution?
Thanks again
Chris

How long has the dark smoke been coming out? That could be the cause of the failed O2 sensor at least this time.

Don't change the MAP yet.

Try this and see what happens.

Find the Idle Air Control Valve it should be located on the plenum. Remove it and take some carberator cleaner and clean it out.

I will be on here on anf off today I work my county job as an EMT.