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the O2 sensor is in the exhaust manifold leftside of engine (front) between engine block and engine cooling fan. Easy access. I used a 7/16.
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∙ 12y ago
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Where is the radiator plug in your 91 Buick Skylark?
You can find the 1991 Buick Skylark radiator drain plug on the bottom of the radiator. The radiator drain plug will be in the center of the radiator bottom.
91 buick skylark 3speed transmission wont shift out of low?
Check of change fluid and filter--if this doesn't help it may be time for a rebuild
How much should it cost to repair the fuel pump on a 91 Buick Skylark in Frazier Park California?
do it yourself and it should cost the price of a fuel pump
Where is the mass air flow sensor on 91 Buick century?
Where is the MAF in 91 Buick century
Where is the oil filter located on a 91 Buick Skylark?
it is between the fire wall and passenger motor under intake manifold closer to passenger side i think it is a Valvoline v-111 but can be done with a cap wrench filter tool it was difficult to do from the top
Will a 91 Buick Regal engine fit into a 91 Buick Park Avenue?
If they are the exact same engine (3800 tuned port injection) then yes.
How do you flush the radiator in a 91 skylark?
Get a flush kit at auto parts comes with adapters and instructions
Where is the oil filter located on a 91 Buick skylark 2.5l?
it is between the fire wall and passenger motor under intake manifold closer to passenger side i think it is a Valvoline v-111 but can be done with a cap wrench filter tool it was difficult to do from the top
What dot brake fluid should you use for your 91 skylark?
Use DOT 3. Can't hurt.
Where is the ecm located on a 91 Buick century 3.3?
i donnoe
Where is the 2nd gear switch located on a 91 Buick Regal?
Is this an automatic transmission?
What kind of gas is required for a 1979 Buick Electra?
91 OCTANE FUEL
