We just purchased a 1999 Chevy Lumina and we have two lights that come on the one is the service engine soon light and the other is the volts light. We took the car to auto zone and had them hook up the machine for the codes and it said that we had a bad O2 sensor and a miss fire. Well that is not the only problem. The battery will not hold a charge longer than three days and going up hills are about impossible. What could be the problem or problems? What should we do because this is our only vehicle so we need it fixed.
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Re: battery, O2 sensor, transmission miss fire
Change O2 sensor as we all breathe air,Now battery ?? try disconnecting it ,then with nothing on touch battery lead too terminal and see if you get a spark ?? no spark then battery cells shorting out across the plates caused by sulphation ,,cure put battery on a small charger for about a week to try to de sulphate the plates.Small discharge when touching lead to terminal then a boot light is on or an alarm system.Another trick is to discinnect the big wire on the back of the altenator and leave car for three days to see if goes flat as a dodgy diode in the rectifier will give the same fault.
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could be ether of these. try unplugging the front o2 sensor see if it runs better. if so its that o2 try unplugging the rear o2 if its better its that o2. by unplugging it the computer just selects an average input of a good o2. could also be many other things but start with that and I would change the fuel filter maybe its clogged
The DTC (Data Trouble Code) P0135 is for the O2 sensor Heater Circuit Bank 1 Sensor 1. Bank 1 will always be the cylinder bank with the number one cylinder and spark plug, and the number one O2 sensor will be located before the catalytic converter and usually at the rear of the exhaust manifold or just after it. According to the firing order diagram bank one is the cylinder bank that is closest to the fire-wall and there should be an O2 sensor located there around the rear of the exhaust manifold or just after it. If the engine is a 4 cylinder then it will be the O2 sensor before or up-stream of the catalytic converter. Check for any damaged wiring or loose wire connector at the O2 sensor and if they are alright then replace the O2 sensor and then re-set the check engine light. (The auto part store should re-set the check engine light for you if you purchase the O2 sensor from them, and be certain that it is the correct and assembled O2 sensor for your vehicle and not a put together universal O2 sensor)
If it is a 4 cylinder it will be on the exhaust manifold at the front, a V6 is also mounted at the front, but lower down. If you are getting an O2 sensor code, change the fuel filter first. O2 sensor seldom go bad.
If it won't go into overdrive a speed sensor within the transmission may not be sending the shift signal to the transmission. Check fluid levels to make sure that's not causing the problem. Also, check that the fluid is red color and clean.
Transmission probably needs to be serviced at a reputable shop if you want this problem fixed.