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2005 Buick Lesabre surging Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting plumadw New User Mar 7, 2024, 12:46 PM Post #1 of 4 (10197 views)      2005 Buick Lesabre surging   My 2005 Buick Lesabre runs good & then the engine boggs down like it wants to die and then all of a sudden it surges forward fast and then drives good again until it starts to surge again. Earlier it would start surging when I came to a stop sign but now it starts surging while I'm driving. I've had it in & out of the shop since Nov. & they still can't figure it out. I have Multiple Sclerosis and I really need my vehicle to get around. I would more than greatly appreciate any info you could give me! Thank you so much for your time! Hammer Time Ultimate Carjunky / Moderator Mar 7, 2024, 1:22 PM Post #2 of 4 (10182 views)      Re: 2005 Buick Lesabre surging   I've had this problem before on that engine and it turned out to be a bad Mass Air Flow sensor. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. tractorboy User May 11, 2024, 5:05 PM Post #3 of 4 (637 views)      Re: 2005 Buick Lesabre surging   I had a 2003 Impala that at idle would surge really high, never did it driving....it was the knock sensor. to expand on what HT said there is MAF cleaner, that you can squirt on the inside of the MAF, the sensors get covered with crud, you also might have an air leak after the MAF too. the MAF tells ur car computer how much air is coming in so if you add extra air downstream past the MAF the Ox sensors may be trying to compensate for an over lean condition ...so the surge. did you have any work done under the hood lately, maybe someone did not put back everything right? also check your air filter is not clogged. also ur car is 19 years old, a lot of the rubber ducting from the airbox to the MAF then to the throttle body gets dry and may be leaking. (This post was edited by tractorboy on May 11, 2024, 5:08 PM) Hammer Time Ultimate Carjunky / Moderator May 11, 2024, 5:36 PM Post #4 of 4 (634 views)      Re: 2005 Buick Lesabre surging   This thread is from March and the OP has never returned. Please don't post to old threads. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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