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Reload this Page 1990 coupe deville 4.5l hesitation
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Old 11-08-2008, 04:44 PM
go48jjgo go48jjgo is offline
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1990 coupe deville 4.5l hesitation
hey i have a 1990 cadi coupe deville with the 4.5l in it. when i am accelarting my car hesitates and seems like its down on power a lot, when at crusing it is fine. i have replaced my fuel filter,wires,cap,rotor,plugs. had my injectors cleaned and have no clue what else to look at? any one have any ideas or answers? i am at a loss with this. thanks Ray
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Old 11-09-2008, 08:55 AM
maxwedge maxwedge is offline
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Re: 1990 coupe deville 4.5l hesitation
Welcome to AF, checking fuel pressure is next. Does it feel like a misfire or it just lacks power?
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Old 11-09-2008, 02:01 PM
go48jjgo go48jjgo is offline
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Re: 1990 coupe deville 4.5l hesitation
it feels more like a miss, but its very slughish. what knid of pressure should have?
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Old 11-09-2008, 03:03 PM
maxwedge maxwedge is offline
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Re: 1990 coupe deville 4.5l hesitation
Throttle body efi correct?, if so 12-13 psi.
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