Replaced Water pump now car idles fast, rough and sounds different

1999 OLDSMOBILE ALERO
142 MILES • 2.4L • 4 CYL • AUTOMATIC
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LYNDEL MOORE
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Replaced water pump and thermostat now car idles fast and rough sounds different and tries to die out at stop light or when turning. Before replacing water pump it shook when idling and would cut out when driving like it was running out of gas, but never died and it would act like it was going to die at stop lights, but never did.
Sep 25, 2016 at 8:19 PM
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HMAC300
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scan for codes and check fuel pressure with a gauge auto parts rent it. also clean throttle body on both sides and iac hole with choke cleaner.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Sep 26, 2016 at 7:31 AM