Question about Cars & Trucks
Very hard starting stalls at idle rubber smell
Usually connected directly to the exhaust at various locations, you could have up to 4 02 sensors and need a special socket that is worth buying, it allows for the wire has a long slit and is a deep socket in various sizes
Posted on May 10, 2013
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Posted on Jan 02, 2017
Try cleaning the Mass Airflow (MAF) Sensor. My 2002 Protege check engine light came on and it started stalling at stoplights if I didn't keep the engine revved a little. Manager at AutoZone checked the computer code for the light (P0171?), and it said it was running lean. He suggested I try the MAF sensor cleaner they have ($6.99) rather than replacing the 02 sensor, etc.; it made a *significant* difference. (I think I need to do it again to get it totally cleaned out, but the can is for at least 4 cleanings.) The MAF sensor is the large component that air goes through right after the air filter. If you don't have the repair manual for the car (search online for PDF's), you search for the part online to see what it looks like. Mainly, it's a tube about 4" across with some small wire things inside. The cleaner can said it was a 10 minute job; mine took 20 minutes, but only because the tube leading from the MAF sensor to whatever is next (a kind of bent elbow tube, with a couple of accordian-style ripples) tore, and I had to duct-tape that up to seal it. (Still haven't gotten that replaced - found them online for ~$40. Maybe this weekend...)
Posted on May 16, 2009
i wouldn't be looking at the o2 sensors! look at the coolant temp sensor! when the car is cold it doesn't correct fuel & air ratio until it is warm so it is not looking at the o2's till then! if the sensor is bad and telling the computer it is warm when it is cold them it would be leaned out and run like that then when the car gets warm it's fine because the sensor is still saying it's warm! would be the opisite if it went bad and was telling the computer it was cold! that is a sure sign of the temp sensor being bad! good luck
Posted on Sep 18, 2009
Testimonial: "Thanks. I'll look into that. Coolant sensors are a lot cheaper than O2 sensors too. :-)"
My daughters 2003 focus had this same problem and the same error code was reported. The auto parts store had her putting fuel system cleaner into her tank but this did nothing to alleviate the problem. If anything it was worse. I looked at it and heard a significant vacuum leak. A rubber elbow that was at the vacuum end of the vacuum tube coming from the valve cover had gotten oil on it and disintegrated. To determine if this is the same problem you have, spray carb. cleaner behind the intake manifold. If the idle picks up you probably have the same issue. $7 and a visit to the auto parts store later her car was fixed. Disconnect the battery for 10 minutes and then the computer will relearn its correct settings.
Posted on Dec 09, 2009
You should try looking at the transmission fluide, it must be short. If it is, you should go buy a transmission fluid. And make sure you car pipes has no leak.
Posted on Jan 11, 2010
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