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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1997 Acura TL
Question: runs good then idles rough and won't take gas. No check engine codes.???????????
Greg's Orange Auto (8425 Answers) , Orange, CA - (714) 361-9355globalhelper October 11, 2012, 13:10Master
what is the fuel trim readings and how long since fuel filter was repl
Replydpennell, October 17, 2012, 10:16Rookie
Snap on monitor doesnt read fuel trim. Any other suggestions? Fuel filter has been replaced.
Replyziptie12, October 18, 2012, 18:46Master
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.
Replydpennell, October 19, 2012, 10:15Rookie
Thanks for all your help but we decided to let them have the car back.
Replyziptie12, October 19, 2012, 19:47Master
You're welcome, sorry we couldn't help more.
Answer #2holston2008 October 11, 2012, 16:15Technician
i would check fuel pressure, also does the car sound muffled
Replydpennell, October 17, 2012, 10:18Rookie
Fuel pressure was checked. Any other suggestions?
Answer #3ziptie12 October 13, 2012, 16:32Master
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?
Replydpennell, October 17, 2012, 10:17Rookie
Done all this. Any other Suggestions?
Replyglobalhelper, October 17, 2012, 12:25Master
seek help obviously u are missing something or its something else
Replyziptie12, October 18, 2012, 18:43Master
What kind of 'snap-on' monitor would NOT read fuel trim ...curious.