What causes my 2000 impala 3.4 heat gauge to red line but I the radiator is at normal operating temperature ?

10

Asked by Dec 10, 2014 at 09:43 AM about the 2000 Chevrolet Impala Base

Question type: Maintenance & Repair

The heat gauge will go up and down then red line. Last night it went all the way up and the car would not run right. When this happened the radiator was cool enough I could put my hand on it without getting burned, it seams to be at normal operating temperature, there is no steam coming from anywhere and the system is full of good antifreeze. The radiator was replaced less than a year ago and the system flushed.

8 Answers

7,655

is you rad cap on tight or your expantion tank cap and are they in go condition

1 of 1 people found this helpful.
10

Radiator cap is new and was tight when my son left with the car and the expansion cap was on properly but, I'll have him check both of them when he gets out of class. Thanks

1 of 1 people found this helpful.
92,675

Thermostat sticking. If that is the case get it fixed as soon as possible.

1 of 1 people found this helpful.
19,010

I'm with tennisshoes on this one. It could be a thermostat or a bad sending unit to the gauge. Are you getting heat out of the vents when the heat gauge goes to the redline? Hopefully it's not a bad intake or head gasket or worse a cracked head.

5,215

Third vote for thermostat. Reason the radiator didn't get hot because the malfunctioning thermostat wouldn't let the water trapped in the block start circulating through the radiator.

Mine us doing the same it want blow hot air and it runs hot nothing is leaking and I done got a new radiator ,thermostat,water pump and more.and it says low coolant level but I got coolant in it Do you think its the heating core and did you get yours fixed?

I've done all of the above and it still Red Line car runs great no problem can find out what's going on.

92,675

Kevin and Freddy, both of your sounds like head gaskets, your getting compression gasses in the system while running forcing an air pocket in the cooling system, an engine block check will confirm.

Your Answer

Add photo

Related Questions

  • Temperature Gauge 7 answers

    Well it all started with the passenger side blowing cold air when the heater is on. The temperature gauges started going up an down. I have replaced thermostat, water pump, as well as fixed heat. ...

    2005 Chevrolet Impala Base

    -

    Maintenance & Repair

  • 2006 Impala heater 21 answers

    I have a 2006 Impala with a little over 40500 miles on it and it is having issues with the heater. I let the car warm up for 5-10 min and there is still cold air blowing out when the heater is on. Thi...

    2006 Chevrolet Impala LS

    -

    Maintenance & Repair

  • 2002 Chevy Impala 3.8 overheating 13 answers

    Hi everyone, I have a 2002 Chevy Impala 3.8 overheating when stops at the light. I replaced the radiator May 2016, and i just replaced the Fan last week. After replacing the Fan I noticed one Fan wa...

    2002 Chevrolet Impala LS

    -

    Maintenance & Repair

  • Chevy 2005 Impala heating problem 2 answers

    Yesterday my heat did not turn on for awhile. Is that a normal problem with impala? this is my first impala, Any info is appreciated.

    Chevrolet Impala

    -

    Maintenance & Repair

  • normal engine operating temperature 11 answers

    what is the normal engine operating temperature and how do you add coolant.

    2007 Chevrolet Cobalt 1LT

    -

    Maintenance & Repair

Impala

Looking for a Used Impala in your area?

CarGurus has 31,558 nationwide Impala listings starting at $799.

ZIP:

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Js08016
Js08016
Reputation 1,760
#2 Danny Wang
Danny Wang
Reputation 1,640
#3 Tom Demyan
Tom Demyan
Reputation 1,570
View All

Related Models For Sale

Used Chevrolet Malibu
908 Great Deals out of 79,547 listings starting at $1,500
Used Chevrolet Camaro
219 Great Deals out of 30,798 listings starting at $1,217
Used Honda Accord
804 Great Deals out of 84,447 listings starting at $988
Used Nissan Maxima
313 Great Deals out of 25,099 listings starting at $999
Used Ford Mustang
460 Great Deals out of 45,641 listings starting at $1,999
Used Nissan Altima
1,013 Great Deals out of 81,096 listings starting at $1,200
Used Toyota Camry
1,010 Great Deals out of 90,532 listings starting at $650
Used Chevrolet Tahoe
564 Great Deals out of 28,966 listings starting at $1,699
Used Chevrolet Silverado 1500
1,686 Great Deals out of 174,973 listings starting at $1,250

Used Cars For Sale

2017 Chevrolet Impala For Sale
70 Great Deals out of 10,508 listings starting at $16,999
2016 Chevrolet Impala For Sale
51 Great Deals out of 3,142 listings starting at $14,773
2015 Chevrolet Impala For Sale
20 Great Deals out of 1,716 listings starting at $10,856
2014 Chevrolet Impala For Sale
63 Great Deals out of 2,531 listings starting at $10,499
2013 Chevrolet Impala For Sale
74 Great Deals out of 1,483 listings starting at $4,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.