What causes my 2000 impala 3.4 heat gauge to red line but I the radiator is at normal operating temperature ?
10

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

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.

6 Answers
17,595

crumbob answered 9 years ago

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

1 people found this helpful.
Mark helpful
10

davidbf answered 9 years ago

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 people found this helpful.
Mark helpful
56,550

TransAm77 answered 9 years ago

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.

Mark helpful
11,065

ytlas answered 9 years ago

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.

Mark helpful
10

kevin49816 answered 9 years ago

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?

1 people found this helpful.
Mark helpful

Freddy1617 answered 8 years ago

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

Mark helpful

Your Answer:

Related Questions

Impala

Looking for a Used Impala in your area?

CarGurus has 107 nationwide Impala listings starting at $4,632.

Postal Code:

Shortcuts

Search Chevrolet Impala Questions

CarGurus Experts

  • #1
    Rowefast
    Reputation
    6,240
  • #2
    James Sparrow
    Reputation
    4,650
  • #3
    dandyoun
    Reputation
    4,120
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Malibu
50 Great Deals out of 1,139 listings starting at $1,295
Used Honda Accord
40 Great Deals out of 910 listings starting at $1,599
Used Chevrolet Silverado 1500
202 Great Deals out of 5,975 listings starting at $2,975
Used Toyota Camry
52 Great Deals out of 985 listings starting at $2,212
Used Chevrolet Camaro
16 Great Deals out of 307 listings starting at $10,500
Used Chevrolet Tahoe
24 Great Deals out of 911 listings starting at $11,900
Used Jeep Grand Cherokee
109 Great Deals out of 3,238 listings starting at $4,995
Used Nissan Maxima
9 Great Deals out of 144 listings starting at $5,653
Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used Dodge Durango
46 Great Deals out of 2,266 listings starting at $5,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.