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#1
03-03-2010, 10:41 PM
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Engine sounds like it's going up and down when in idle/park???
I have a 98 buick century custom. 197,000km
Sometimes when I start the car and let it run the engine sounds like it's going up and down. I don't know if surging is the word. It sounds as if someone is stepping on the gas and letting go over and over. I will drive it and then check it again and I don't hear it anymore. It's not always there but it's something I would like to look into. Once in awhile the Service engine light comes on but it does go off by itself. Anyone know what this is? 
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#2
03-06-2010, 07:23 PM
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Re: Engine sounds like it's going up and down when in idle/park???
How long since a tune-up? Have the trouble codes checked. Around here some of the national brand autostores used to check codes for free.
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#3
04-04-2010, 09:49 PM
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Re: Engine sounds like it's going up and down when in idle/park???
Try cleaning or replacing the idle air control valve.
SAMSUNG-SGH-A867/A867UCHJ3 SHP/VPP/R5 NetFront/3.5 SMM-MMS/1.2.0 profile/MIDP-2.0 configuration/CLDC-1.1
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#4
04-04-2010, 09:50 PM
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Re: Engine sounds like it's going up and down when in idle/park???
Also, check for vacuum leaks.
SAMSUNG-SGH-A867/A867UCHJ3 SHP/VPP/R5 NetFront/3.5 SMM-MMS/1.2.0 profile/MIDP-2.0 configuration/CLDC-1.1
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