Reply To: Random misfire on Acura – and seems mysterious

[ms2000]

– I called around shops and asked if they have a smoke test m/c. Two of then never answered the question. Another might give a time soon. Not sure if he has it either
– I had a used, but newer, MAP sensor – so I swapped it – seems a little better.
– With the newer one, when the car is idling (Closed loop) on Drive gear, MAP is giving higher reading of 5.36psi. If I shifted to Park (still idling), MAP gives lower value, 4.2psi and STFT increases, hence LTFT increases. You can see it in the photo below.
– Does this have anything to do with Idle Air Control Valve? Faulty?

https://lh3.googleusercontent.com/go2tdP02iIJxpY8UshoGvVvEbn0fcbfE3Dq7nL_R9qR-jisrORmAfJlIt4KyLta6loBw1mi11q8IJtt_uQ4oVIZBIoqytlzR5tAsyQ9WP9kAQiIkbyqs-2NWnPn7MyFJdZqOvxll6eWGnurUjHW1ltNHdOeB_0IA-DcYLPW_bUGfCoZiFsl1lOTSAfmpxy67bvo7dhk6p1Jeg8Q8yfRfJ86p8O5HemdPocCtcBph1bGsTL17VpaSRcFEbOAOYBLycAe5VFCqnwuqSDM1yct3rhlyDHxgteac0dz4EXFsWKh7RSh2pj-374j7hp4aUxt3vegSH-VxN1GzbS2s8A9XAZWiefR3n3OD6ogizUtegD4HYA2jczY4ADOFaDB-iAsfc6WcWHKyYuVALIOyvWPWBMqNrej8iOQM2SeWi-CX7jPjoJtDXAVM4dqBQt67NaWVM0Nxj_uhhve7LdVkGnC3gmUPmYcZaETuI7Rv2pGj37fV7S1v2RjU1Ng1_l1Q35skec10IhoyIGHAPCQZIp95gLm6tYsXGjShozu3ILMBe00I-4jGFBZ7-KTthYBWqE9ZH3qr17GOTGXXv99PwX79l0sg0svWlL-RjgulwA-I0fjAgo4-dPI1MdR6gKPARz4LuQROv7wPtC_MUgOUyrCt5p-E70wllDuRXwKwlv02UTlcTpCqJ2xI6dECxikxzdcPyPQaiUYCE1si3Q-QEtYdbJXg=w353-h763-no?authuser=0

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