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1997 Acura TL Question: runs good then idles rough and won't take gas. No check engine codes.???????????

 

Question

dpennell, 2.5L 5 Cylinder, Oxford, NC, October 11, 2012, 10:10
 Rookie

Im and experienced mechanic 20+ years but this car has me baffled. Will run great for 5 to 10 minutes then starts spittin and idling rough. then will not take gas and has no check engine codes. Any suggestions welcome.

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    Greg's Orange Auto (13472 Answers) , Orange, CA - (714) 361-9386
    globalhelper October 11, 2012, 13:10
     Master

    what is the fuel trim readings and how long since fuel filter was repl

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    dpennell, October 17, 2012, 10:16
     Rookie

    Snap on monitor doesnt read fuel trim. Any other suggestions? Fuel filter has been replaced.

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    ziptie12, October 18, 2012, 18:46
     Master

    With a manual vacuum gauge at manifold vacuum port , what are readings cold start /running good , then what does the needle do when it's acting up , especially when trying to give it some throttle? And just to be clear on your other response , you did try with a leaking exhaust (before the converter) to see if that made a difference?......Remember , we are not there in person so it's a little trickier , without some info. Just trying to help.

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    dpennell, October 19, 2012, 10:15
     Rookie

    Thanks for all your help but we decided to let them have the car back.

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    ziptie12, October 19, 2012, 19:47
     Master

    You're welcome, sorry we couldn't help more.

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  • Answer #2

    holston2008 October 11, 2012, 16:15
     Technician

    i would check fuel pressure, also does the car sound muffled

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    dpennell, October 17, 2012, 10:18
     Rookie

    Fuel pressure was checked. Any other suggestions?

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  • Answer #3

    ziptie12 October 13, 2012, 16:32
     Master

    Also possibly check mass air flow meter for contamination , or any leaks in the air intake system (poss. cracks in hose) While watching fuel trim(#1) , watch MAF reading. ....Any sign of restricted exhaust? (vacuum gauge to test - or (less recommended) create exhaust leak before converter and test drive? Is the knibbler pin and muffler bearing OK?

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    dpennell, October 17, 2012, 10:17
     Rookie

    Done all this. Any other Suggestions?

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    globalhelper, October 17, 2012, 12:25
     Master

    seek help obviously u are missing something or its something else

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    ziptie12, October 18, 2012, 18:43
     Master

    What kind of 'snap-on' monitor would NOT read fuel trim ...curious.

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