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Cadillac Repair/1997 eldorado engine replacement

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Question
i had a mechanic install a 1998 eldorado 4.6 liter engine into my 1997 eldorado etc but can't get rid of a loud squeak coming from the serpentine belt which we replaced along with the tension pulley and the power steering pump and the water pump. is this because its not a 1997 engine?

Answer
The year of the engine makes no difference, You have one of the pulleys that run one of the components that the serpentine belt drives out of alignment.

Try spraying some SILICONE SPRAY on the belt to see if the noise gets and less noisy and let me know.

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On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.

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Held over 15 GM certifications prior to retirement in 1989.

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Prior to retirement held several ASE certifications, numerous Factory certifications.

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