Question about 1997 Ford Thunderbird LX

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Have codes - p0161 - p0171 - p0174 - 97 ford thunderbird, 4.6 engie

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  • budyzer1 Aug 21, 2010

    replaced the (TPS) sensor. still does'nt run right at start up. no check engine light yet, but i only ran it for about 15 miutes. seems like it misses a little.


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Hello! Thank you for allowing me to solve your P code trouble...The P0161 Is a O2 sensor.problem...In many instances it is an effect not a cause...P0171 and P0173 are indicating a lean fuel air mixture...The Throttle Positioning Sensor (TPS) is the primary suspect...It is mounted on the throttle body...It has a two wire connector with the following wire colors...Brown/White and Gray/Red...Rather than replacing the sensor...It can be tested...Do you have a voltmeter? Please send a comment..Saailer

Posted on Aug 20, 2010

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  • David Burbee
    David Burbee Aug 21, 2010

    Hello! Your vehicle is on the road to recovery...It all depends on how long you drove with a faulty sensor...The engine requires a little cleaning...And "may" need another sensor replacement...However, lets address a few simple items first...Change the Positive Crankcase Ventilation(PCV) valve...Remove the throttle body inlet hose and inspect for carbon build-up...Auto parts stores sell a throttle body cleaner...Between the air cleaner box and the throttle body is the Mass air sensor...Remove it ...Be careful it's a bit fragile...It has a connector...Unplug connector and set sensor to one side...Go to Radio Shack and buy a product called DeOxit...It's a no-touch electronic cleaner...Cost $16...Spray the membrane inside the sensor and reinstall...Start the engine and note any improvement...I'm in the business of repairing your Ford's fault...With the least amont of money spent.....Send a comment with results..............Saailer

  • budyzer1 Aug 22, 2010

    saailer, tried everything you said. much improved starts right, runs ok, but after about 5 minutes driving, the check engine light came on again. now has new IAC, PVC, TPS, several new vacuum hoses. i'm going nuts! it also misses just a little in park when accelerating.

  • David Burbee
    David Burbee Aug 22, 2010

    Hello! Cars can make us crazy...All of what you now have points to a vacuum leak...The key element is the Idle Speed Control (IAC) Code with the PCV...Perform a visual inspection of vacuum lines associated with iac and pcv...Place your index finger and thumb around the vac. line connections and listen for a change in idle speed...Is the PCV valve tight in it's gasket?

    There is the possibility accidental vacuum line reversal or open is also playing a part.Send a comment...I am here! .....................Saailer

  • budyzer1 Aug 22, 2010

    saailer,took your advice and checked all vacuum lines. put hose clamps on one line and for the momment, it seems ok. no lights, runs good. i'll know tomorrow if all is well. i took the car back to my daughter, and told her to let me kow if anything else happens. thank you so much for all your help on this problem. - John ps, i'll let you know if it's fixed or not.

  • David Burbee
    David Burbee Aug 22, 2010

    Hello! Great... It looks like we have a solution...Send a comment when you hear from your daughter...Saailer

  • budyzer1 Aug 23, 2010

    saailer, talked to my daughter this am and she said the engine stumbled a little when first started but straightened out and ran fine. still no dash lights on, but must still be a little something somewhere. - John

  • David Burbee
    David Burbee Aug 24, 2010

    Hello! Lets get those dash lights fixed...I'll send that information on Tuesday morning...

    To get rid of the stumble... Go to an auto parts store and buy a can of SEA FOAM...$9...Pour it in the gas tank...fill the tank...It is the best carbon, gunk cleaner there is...Just drive the car and it will clean the engine.................Saailer


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How to fix p0171 and p0174 in 1995 Thunderbird

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The PO161 code tells you

Did you not google it, to learn what the
reason for the code was

Doesn't mean a sensor is bad,maybe,but you have
to do some testing

PO 161--Bank #2 Sensor #2

Bank #2 is the side opposite cylinder #1
& Sensor #2 is the one at the converter outlet

Need to study OBD2 Systems before you go
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