Question about 2000 Buick LeSabre

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Random misfire on 99 Buick LaSabre - 2000 Buick LeSabre

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Random misfire can be due to bad sparkplug wires or a vacuum leak at the intake, there are many thing that can cause a random misfire even low fuel pressure, and last would be dirty injectors. i would start by having the fuel pressure checked and then having the injectors cleaned.

Posted on May 28, 2011

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Posted on Jan 02, 2017

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SOURCE: license plate light out 99 buick lasabre

same circuit with your parking light

Posted on Feb 27, 2010

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99 buick lesabre coil pack ohms?


The codee will tell you which tewo cylinf-ders are misfiring. One coil fire those two cylinders. Replace the coil for those cylinders per the engine code.

There are coil primay windings that you can't easuily measure. Measuring only the secondary winding is not a full check. If yoyu arte lucky, test all three and look for the coil that is not like the other two if you must. Better to repalce all three when this sort of thign begins to happen. And wiires and the plugs, too!

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License plate light out 99 buick lasabre


same circuit with your parking light

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Take it to a local auto parts store (Autozone, Murray's, Checkers, Napa) have them hook up a scan tool to get the diagnostic codes, write them down and post them here so we can further assist you. There are many reasons that can cause the check engine light to come on.

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Kidspeedy hopefully buick lasabre that runs rough


I also had a misfire, but on a 4cyl. At speed it was great-getting there? so yes do the tune up of plugs and wires. You only have one cyl out of six laying down on you, might not even be hardly noticable.

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1 Answer

Misfire of cylinder 2 & 5 on 04 Buick LaSabre Custom


Ok this may be something smal that may be simple to fixs; your plugs are in the wrong cylinder?

Check Your gap size .060 (In thousandths of an inch)

Im not sure of the size of engine please look below for your make?

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Fig. 3.8L VIN 1 Engine Firing order: 1-6-5-4-3-2 Distributorless ignition system


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Fig. 3.8L VIN K Engine Firing order: 1-6-5-4-3-2 Distributorless ignition system


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Fig. 3.8L (VIN 1 and L) Engines Firing order: 1-6-5-4-3-2 Distributorless ignition system
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Fig. 3.8L (VIN K) Engine Firing order: 1-6-5-4-3-2 Distributorless ignition system
I hope that this help!

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99 Buick lasabre


If you have a "load leveling " system, the actuator arm is either disconnected or the actuator itself is malfunctioning.

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Random Cylinder Misfire


The cam sensor code is the part to concentrate on, also check the timing belt for excess play causing the camshaft to whip, this will cause a random miss.

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