town car running terrible when cold

1992 4.6 ltr When started runs real bad until warms up. Replaced oxygen censor, plugs, wires checked for vacuum leaks did not find any. Have had it on the computer and it shows nothing wrong. The check engine light is
now on but it wasn't on when put on the computer. Will it show a problem now? Any other sugestions as to what the problem might be?
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have you checked the rubber "T" coupling on the passenger side at the back of the engine to see if it has a hole in it?
follow the PVC line from the passenger side to the back of the engine. do this while the engine is cold - it's easier. might have to take a flashlight to see it well. the original "T" collapses in the middle and the replacement has a more ball shape for strength.
it will suck air into the intake and throw the fuel mixture off.
if you do find the "T" bad, then follow that line from the "T" to the driver's side bank at the back of the engine. it has a straight line rubber hose that collapses too and will suck air too.
hard to find, but you won't forget it. i sure didn't.
hope this helps.
~ curtis
knowledge is power - growing old is mandatory - growing wise is optional "Many more men die with prostate cancer than of it. Growing old is invariably fatal. Prostate cancer is only sometimes so." http://community.webtv.net/PALMER_ENT/doc
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