surging

Discuss your 2000-2005 Bonneville SE, SLE, SSEi, Buick Le Sabre 00-05 and Buick Park Avenue 97-05. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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01 blk bonny
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surging

Post by 01 blk bonny »

My car started surging today when I am in drive at speeds between 50 and 60-65, once over that or under acceleration, the car does not do it. The surging is very light and goes away with even light throttle, I replaced the TPS just a few months ago.
2001 Black Bonneville SSEI with the following mods:
3.4 pulley, autolite 104's, 8.8mm wire set, FWI, throttle body spacer
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Re: surging

Post by bonnieslp »

could possibly ber egr ports getting carboned up
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laxmangl
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Re: surging

Post by laxmangl »

Doesn't really sound like it in your case but my surging was caused by a faulty MAF sensor.
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harofreak00
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Re: surging

Post by harofreak00 »

sounds like ignition to me... how are your coils, plugs and wires?
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01 blk bonny
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Re: surging

Post by 01 blk bonny »

Sorry everyone, been really busy. Had the car scanned and came up with 4 trouble codes, 2 for the EGR, 1 for misfire and 1 stored for converter slip. The reading for the EGR was 7% at key on, so the egr was totally trashed, replaced that today, and doing my plugs and wires tomorrow. 1 plug wire was burned or arcing, and one or more plugs may have fouled from the egr. Good news is NO KR!!!!!
2001 Black Bonneville SSEI with the following mods:
3.4 pulley, autolite 104's, 8.8mm wire set, FWI, throttle body spacer
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Re: surging

Post by AZCertified »

could my spark plugs be part of my surging with no CEL on..? my throttle body plate doesnt click when i let the lever go...the plate closes but the lever kinda bounces back...i dont want to waste money and change my TCC solenoid when it could be somthing i could tackle...but every time i throttle up to 30-35 mph the car jumps to the 1500 rpm range...could it be MAF without CEL..? it stops this one i release the gas pedal or tap the brake while still throttling...please help
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Re: surging

Post by J Wikoff »

Please start a new thread if you haven't already.
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