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Testing an EGR value on a 1994 LeSabre is a complicated task. You need a multi-tester and wire piercing probes. The EGR must be tested with the unit still in place in the car and you must perform several different tests. For the average DIY'er it is a complex process. However, I can recommend a much simplier way. Carefully remove the two nuts that hold the EGR in place, being especially careful not to damage the EGR gasket. Once removed, inspect the smaller passage (on the bottom of the EGR). This passage should be closed (meaning, the spring loaded is all the way down or closed). If this passage on your EGR is open, I would replace the EGR. If the passage is closed, then I would would clean still clean both of the internal passages (the large and small passages) with carb cleaner and Q-Tips and then reinstall. Test for functionality. It could simply be dirty.
What else can I help you with?
Where is the computer in a 1994 Buick lesabre?
On my 1994 Lesabre it is under the dash about center at edge of carpeting
Which relay is the starter relay on a 1994 Buick lesabre?
Which relay is the starter relay on a 1994 buick lesabre
Where is the fuel pump relay located on a 1994 Buick lesabre?
fuel pump relay location in 1994 buick lesabre
The service engine soon msg diagnostic on your 1990 Buick LeSabre indicates egr flow check with an action have vehicle serviced by a dealer what should you do to check egr flow?
You buy a new egr valve for about $300.00 or take the old one apart and clean it. It fixed my 1990 3800 lesabre.
What would cause a 1994 Buick Lesabre to chug while driving and sometimes chug until it cuts off while idleing.. already replaced the spark plugs. could it be an EGR valve or fuel pump?
94 Buick LeSabre, runs great until I step on gas and then it starts to chug and hesitate
What causes a 1994 Saturn SC to fail emissions test?
Either catalytic converter or EGR (exhaust gas recirculation) system issues.
How do you change the EGR valve in an Aspire 1994 automatic?
There is no EGR valve on an Aspire.
Where is the egr temp sensor on a 1994 mercury villager?
On the EGR valve assembly.
Where is the EGR valve on 1994 Oldsmobile achieva 2.3l?
There is NOT an EGR valve on this engine.
Is there an egr relay for a 1994 S10blazer?
no.
What does an egr valve do in a 95 buick lesabre?
Controls the amount of exhaust gas being recirculated back into the engine.
How do you replace a rear wheel bearing on a 1994 Buick LeSabre?
I have a shimmy or small vibration while driving the interstate on my 1994 buick lesabre - if i was to check the front and rear bearings - how would i do that and what would i look for
