2008 Buick Lucerne sensor issues

2008 BUICK LUCERNE
89,000 MILES • 4.6L • 6 CYL • FWD • AUTOMATIC
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NEHPETS9
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My check engine code showed a bad camshaft position sensor and knock sensor. My car is sputtering from time to time as if it's not getting gas and even cut off at a red light a few times. I took it to the shop and had the sensors changed and it still had the same problems. I took it back to the shop and they can not figure it out.
Please help..
Oct 15, 2015 at 10:15 AM
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HMAC300
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what are the specific codes on knock sensors the sensors have to be torqued correctly or they go bad and a lot of times the harness has to be replaced with them. the cam sensors if run by plug wires will pick up interference from them. send back the correct codes so we help further.
Oct 15, 2015 at 10:41 AM
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NEHPETS9
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I don't remember the number codes
Oct 15, 2015 at 11:29 AM
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HMAC300
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well check back and see if the mechanic remembers there are a few different codes for knock sensors. or go to an auto parts they can do for free as they are engine codes. then write them down
Oct 15, 2015 at 11:50 AM