help me please

2000 FORD CONTOUR
152,000 MILES
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CADAMS72206
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Help!!!!! I have replaced the Pcv IAC tps Pcv hose cleaned the maf plugs wires tested fuel pressure all fluids are full and have checked all vacuum lines no iss ues or I replaced them and the car isles rough with a/c on and will stall when on full blast and sometimes it will work ok till u tap the gas th started the rough isles and wants to shut on and it acts like its missing bad if u hold the pedal down it will rev but spits and sputters can u help m en it e find out what's wrong I have no engine lights on and have run a fuel pressure test and seems fine and scanner tool says it all ok I think its a 2000 Ford contour with the 2.0 and a non returnless fuel system
Mar 19, 2012 at 11:14 PM
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RASMATAZ
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Scan the computer for code/s if any post them
Mar 20, 2012 at 12:03 AM
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CADAMS72206
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There are not I already have tried that I have a scanner
Mar 20, 2012 at 12:16 AM
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RASMATAZ
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Check the alternator if its putting out the correct voltages, recheck the IACV and check the EGR and PCV valves-to include the throttle position sensor
Mar 20, 2012 at 12:35 AM
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CADAMS72206
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I have rebuimt the alternator and have replace the TPS AND IAC
Mar 20, 2012 at 12:37 AM
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RASMATAZ
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Go to this link:https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Mar 20, 2012 at 12:39 AM
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CADAMS72206
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I DID AND I'M GETTING NO WHERE EACH PLUG HAS SPARK SORRY FOR THE UPPERCASE
Mar 20, 2012 at 12:42 AM
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RASMATAZ
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Check the valve and ignition timing-also verify fuel pressure if its within specs-
Mar 20, 2012 at 1:26 AM
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CADAMS72206
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I'm getting 30 psi continuos when I hit the throttle it goes up to 45 timing is 11 degrees at idle how do I check valve timming
Mar 20, 2012 at 1:32 AM
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CADIEMAN
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u need to have the engine scoped to check the pattern for bad ing. parts
Mar 20, 2012 at 10:54 PM