Help! Can't start it up...

[achoeypatkul@hqfaus01.unicef.org (Amnat Choeypatkul)]

     Dear Q-listers,
     
     URGENT!  I need all your helps, pls...  Here's what happened to my 
     '89-90 (non-q):
     
     1) This morning (temp outside: 56F), when I--first, started the engine 
     I heard a _not too loud_ pop sound from the engine area.  The engine 
     was cranking, but it was not _fully_ started.  (The engine sound liked 
     it was coughing/fought to idle, not smooth as usual, then it stopped 
     when I let go the key from the start position.)
     
     2) Waited for 1-2 mins, then, restarted it again.  The engine was 
     cranking but not completely started.
     
     3) Checked the diagnostics...got all OKs.
     
     4) Restarted it again, the same result in 2)
     
     5) Restarted--w/ the gas pedal pushed to half way, the engine started 
     but its sound was very scary--like it was coughing w/ some 
     _intermittent/moderately loud popping sounds_.  (Its sound liked the 
     engine fought to run at the idle rpm w/ the intermittent popping noise 
     in the background.)  When I let go the gas pedal, it stalled right 
     away.
     
     6) As of now, I can't start the engine, unless I pumped the gas half 
     way.  (But the engine would run w/ a very horrible sound in 5)
     
     7) Opened the oil cap & cranked the engine, the cam was turning OK.
     
     8) Checked the dist. cap, rotor, spark plugs, it's OK--got a juice.
     
     From all above, could you pls let me know...what went wrong w/ my 90. 
     Anyone BTDT, pls let me know the fix & how much $$$ it's going to cost 
     me.  :(
     
     MTIA,
     Nat
     '89-90 non-q (69+K miles & sick)
     
     Internet: achoeypatkul@unicef.org
     
     
     Note:
     - I just had "60K services"--from a _lousy_ Audi dealer in NYC area 
     (Zumbach), back in June '97.  (The dealer replaced the timing belt and 
     it seems the belt was loose--because it has the same rattle noise at 
     the ignition dist. as Wolff's the Beast.)
     
     - I was verbally told by the above dealer that w/ the "60K services" 
     my car will automatically get 12K/12mons warranty from the Audi.  Does 
     anyone of us know about this warranty?  (If yes, how do I claim this 
     warranty from the Audi?  Anyone BTDT?)