Low Coolant Light

Asked by Apr 26, 2016 at 10:45 PM about the 2002 Buick Century Limited

Question type: Maintenance & Repair

Rebuilt engine at 84,000 miles in March. New intake and other gaskets,
plugs, wires, radiator, hoses, etc.

Driven about 1,500 miles since rebuild. Today "low coolant light" came on
briefly. After letting engine cool, checked and it was a little low in radiator.
Added a cup to a cup-and-a-half. Drove it home from work (about 20
miles). Light came on again. After letting engine cool, checked again. Had
to add maybe a half cup or less.

My boss (much wiser on cars than myself) said that little coolant needed
should not have triggered the light. He also said a newly rebuilt engine
uses some coolant and that seemed well within range for that. Having to
add a little again this evening - is that cause for concern? Checked other
fluids - everything seems fine, no mixed fluids or anything.

Thanks.

2 Answers

Back to basics: First, pressure test the cooling system. A leak will show as pressure drop, even if liquid isn't visible. Visually inspect for any signs of coolant on exterior of engine, heater core, and hose connections. A small leak of 180 degree coolant may evaporate away rather than leak to the ground, but leaking gaskets should be visually detected. Look around intake manifold to cylinder head seals. Electronically test the sensor for proper calculation. place a clean cloth or paper sheet under the engine compartment after driving the car up to operating temperature, and parking the car. leave it overnight, inspect for fresh drips in the morning. If found, "look up"! Good luck.

60

If all the above is good, then try checking the sensor.

Your Answer

Add photo

Related Questions

Search Buick Century Questions

Buick Century Experts

#1 John Saffrahn
John Saffrahn
Reputation 850
#2 Tom Demyan
Tom Demyan
Reputation 670
#3 John Pate
John Pate
Reputation 340
View All

Related Models For Sale

Used Buick LeSabre
8 Great Deals out of 2,363 listings starting at $1,768
Used Buick Regal
210 Great Deals out of 11,175 listings starting at $2,195
Used Chevrolet Impala
999 Great Deals out of 36,595 listings starting at $1,800
Used Buick Park Avenue
501 listings starting at $3,975
Used Honda Accord
1,255 Great Deals out of 78,205 listings starting at $969
Used Ford Taurus
358 Great Deals out of 22,551 listings starting at $1,499
Used Chevrolet Malibu
1,159 Great Deals out of 80,222 listings starting at $2,495
Used Toyota Camry
1,519 Great Deals out of 101,099 listings starting at $700
Used Nissan Altima
1,334 Great Deals out of 84,997 listings starting at $1,795
Used Pontiac Grand Prix
27 Great Deals out of 3,785 listings starting at $1,195
Used Honda Civic
1,179 Great Deals out of 66,806 listings starting at $695
Used Chevrolet Monte Carlo
16 Great Deals out of 1,737 listings starting at $1,695