2002 chevy imapla runninh warmer than usual

20

Asked by Sep 11, 2016 at 06:13 PM about the 2002 Chevrolet Impala LS

Question type: Maintenance & Repair

I have a 02 chevy impala 3.8l v6 that is
running warmer than usual. I have replaced
the temp sensor and radiator cap.  Engime
light came on and said fan relay #1. So
replaced it. Both fans work but the running
fan does seem to be kicking on when it
should. It doesnt kick on until my temp
guage reaches the line above the half way
line. Any advice?

9 Answers

56,855

Remove the top "beauty" cover and look carefully at the top of the engine behind the upper intake manifold. Do you see small pools of coolant or oil? If do, the intake gaskets have failed. How many miles are on your Impala? This could also be the beginning of a water pump failure. The impeller may be rusting away. That's what happened to my 2000 Grand Prix (same engine). Here's a picture of the old water pump. You may also have a little bit of air in the cooling system. Does the heater work? HTH. -Jim

56,855

Here's the new one. You can see the difference. -Jim

20

Im not seeing the pictures. But yes the heater works good. 189000 miles on the car.

1 out of 1 people think this is helpful.
56,855

Darn! You're the second person who has told me recently that the pictures didn't post! Sorry about that! With that amount of mileage it's safe to assume that the intake gaskets have been done. They usually failed between 90,000 & 120,000 miles. But have a peek anyhow. Since the heater is working I doubt it has air in the system. Try a good flushing out of the cooling system. If it hasn't been flushed out in the past 5 years/50,000 miles you're due. HTH. - Jim

20

Ill look under the beauty cover tomorrow when its light out. I have already flushed the cooling system out last wk cause that was my 1st thought was a stopped up radiator

56,855

Ok, that's good. Now, does it seem to heat up when driving at higher speeds? If so it's a coolant circulation problem (water pump, thermostat, clogged radiator/cooling system passages in the engine). Or does it heat up at slower speeds and/or while idling? If so, it's an airflow problem (blocked a/c condenser, blocked radiator , fans not working). By blocked condenser or radiator I mean air can't get through because of dust, dirt, leaves, etc. I believe you have 3 cooling fan relays. Two four pin relays for each fan individually and a five pin relay for high speed. When you unplug the coolant temperature sensor both fans should come on immediately at high speed when you start the engine. If not, something is going on with the fan circuit. With the temperature sensor unplugged the check engine light will come on as well, ignore it. HTH. -Jim

20

It heats up to that temp no matter if your going slow, fast, or just idling. Ill unplug the temp sensor tomorrow as well and check the fans.

1 out of 1 people think this is helpful.
56,855

Ok, sounds good. Keep us posted! -Jim

20

Will do. Thanks for the help. Ill let you know what i see tomorrow evening.

Your Answer

Add photo

Related Questions

  • How do I reset the memory on my 2002 impala after the battery has been replaced 2 answers

    I have a security issue with my 2002 chevy impala. I let it sit 10 mins and it usually resets and the car starts. My battery died when I was doing this and I took it to bee charged and found it was ...

    2002 Chevrolet Impala Base

    -

    Maintenance & Repair

  • 2002 Chevy impala ls 1 answer

    I'm not sure what's going with my car but all fuses seem to be good I tested them all the battery is also good I tested it with a volt meter, but there is no electricity in the car none, nothing at al...

    2002 Chevrolet Impala LS

    -

    Maintenance & Repair

  • 2002 chevy impala overheating. 22 answers

    Radiator fan assembly making noises. Replaced it after check engine light came on. Light came on again after replacement checked and replied fan #1. But both are working. Reset light and is still ...

    2002 Chevrolet Impala Base

    -

    Maintenance & Repair

  • When to change fan belt on a 2002 chevy impala 5 answers

    2002 Chevrolet Impala

    -

    Maintenance & Repair

  • how do I change the thermostat on a 2002 venture 6 answers

    how do I change the thermostat on a 2002 chevy venture

    2002 Chevrolet Venture LT Extended

    -

    Maintenance & Repair

Impala

Looking for a Used Impala in your area?

CarGurus has 36,811 nationwide Impala listings starting at $1,800.

ZIP:

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,590
#2 Js08016
Js08016
Reputation 1,490
#3 FordNut
FordNut
Reputation 1,380
View All

Related Models For Sale

Used Chevrolet Malibu
1,154 Great Deals out of 80,725 listings starting at $2,495
Used Chevrolet Camaro
631 Great Deals out of 39,687 listings starting at $2,995
Used Honda Accord
1,264 Great Deals out of 78,832 listings starting at $969
Used Nissan Maxima
516 Great Deals out of 25,500 listings starting at $1,500
Used Nissan Altima
1,350 Great Deals out of 86,045 listings starting at $695
Used Toyota Camry
1,525 Great Deals out of 101,602 listings starting at $700
Used Chevrolet Tahoe
1,086 Great Deals out of 32,099 listings starting at $1,495
Used Chevrolet Silverado 1500
2,759 Great Deals out of 150,219 listings starting at $1,259
Used Ford Taurus
368 Great Deals out of 22,720 listings starting at $1,499
Used Ford Mustang
719 Great Deals out of 39,136 listings starting at $1,000

Used Cars For Sale

2017 Chevrolet Impala LS For Sale
3 Great Deals out of 1,426 listings starting at $18,438
2016 Chevrolet Impala LS For Sale
35 Great Deals out of 1,042 listings starting at $14,999
2015 Chevrolet Impala LS For Sale
11 Great Deals out of 526 listings starting at $12,995
2014 Chevrolet Impala LS For Sale
14 Great Deals out of 393 listings starting at $10,500
2013 Chevrolet Impala LS For Sale
35 listings starting at $5,895