Question about Ford Thunderbird
The intake gaskets are also really common to go bad and cause a vacuum leak which will also give the same codes. If they are really bad the idle will be funky on cold start up. The easiest way to figure out if they are leaking is to have the intake smoke checked. You can do it yourself by spraying carb spray around the intake with the vehicle running and listen for any change in idle.
Please be very careful when using carb spray, it is vary flamible! If there is any leak in the ignition system it can ignite the vapors from the carb spray and cause a fire!!!!!
Cleaning the MAF is a good start. They make a MAF sensor cleaner which will not harm the MAF sensor. It is available at any good auto parts store.
Posted on Sep 30, 2010
U have a vacuum leak at the intake is the most common source of this type of bank one and two codes
Posted on Sep 30, 2010
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Posted on Jan 02, 2017
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Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.
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A code P0171 may mean that one or more of the following has happened:
Possible solutions include:
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