Heat not working unless engine at higher rpms.

christianculp
0

Asked by Dec 15, 2006 at 09:42 AM about the 1992 Chevrolet Lumina 4 Dr Euro Sedan

Question type: Maintenance & Repair

My car started this morning with the low coolant light on. When I went to add more coolant, I pressure cap was loose.  I tightened it and light went off. I added about a quart of coolant. My heater is blowing cool air until I accelerate from a stop or am doing about 50 mph. Then I blow nice and hot like I am use too. Is this a thermostat problem? What else could it be?

1 Answer

carGrrl
15,885

This is a problem which unfortunately has shown up in a few of the 1992 Luminas. A common cause is a gummed-up thermostat. When this happens, the heat comes directly off the heads and flows down into the heater core, which then blows the heat into the cabin, which might explain your acceleration-only heating. One way to check and see if it's stuck opened is to let the car idle for about five minutes. Squeeze the upper radiator hose. If the thermostat is indeed open, you will feel water in the hose. If not, the problem is something other than your thermostat.

Your Answer

Add photo

Related Questions

Search Chevrolet Lumina Questions

Chevrolet Lumina Experts

#1 90V6RedHotLuminaEuro
90V6RedHotLuminaEuro
Reputation 1,050
#2 Justin Hatfield
Justin Hatfield
Reputation 1,040
#3 John Saffrahn
John Saffrahn
Reputation 1,000
View All

Related Models For Sale

Used Honda Civic"
874 Great Deals out of 55,336 listings starting at $995
Used Honda Accord"
1,255 Great Deals out of 73,197 listings starting at $500
Used Ford Taurus"
333 Great Deals out of 19,061 listings starting at $1,499
Used Nissan Altima"
1,730 Great Deals out of 81,010 listings starting at $500
Used Buick LeSabre"
36 Great Deals out of 2,634 listings starting at $1,200
Used Pontiac Grand Prix"
72 Great Deals out of 4,483 listings starting at $1,700
Used Chevrolet Caprice"
187 listings starting at $1,915
Used Toyota Camry"
1,644 Great Deals out of 89,329 listings starting at $990