Temperature gauge is running higher than normal

Tiny
CINDER4062
  • MEMBER
  • 2006 CHRYSLER ASPEN
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
I trying to find out why temperature gauge is trying to run above normal. I changed my thermostat and the only thing I can think of next is my water pump. Would that cause the issue? I trying to prevent my vehicle from having an overheating episode. All suggestions are welcome. Thank you in advance for your timely response.
Sunday, April 29th, 2018 AT 5:48 PM

3 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
The thermostat is a good and inexpensive place to start.

Fan working?

Other considerations might be old, wrong mix of coolant,

clogged bent radiator fins,

Twelve year old radiator scaled up inside, possibly verify it is cooling ability with an infrared temperature gun, Some are as cheap as $30.00, see if a shop will check it in the parking lot. (flush, if possible or replace the radiator)

Old squishy radiator hoses sucking flat.

I looked at a auto store site, the water pump they show has a plastic impeller (first picture below) Another brand may be metal?

Here is more information from "repair guides", top right of our pages.

https://www.2carpros.com/articles/symptoms-of-an-overheating-engine

Not trying to scare you, but plastic and water pump does not seem to fit together in my book. First picture below is the one I got at the auto store site. The rest are failures from other vehicles, some are missing a fin, slipping on the shaft, others are total fails. Unfortunately, this would require removal to inspect it.

Site unseen, my Lottery guess is the radiator internally.

Sometimes it might just be a defective temperature sending unit.

Let us know how your investigation goes, check it out well before you start slinging in unneeded parts!

The Medic

Was this
answer
helpful?
Yes
No
Sunday, April 29th, 2018 AT 8:27 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,216 POSTS
Define "hotter than normal". Most modern engines run hotter than older engines, 210°F - 215°F is normal operating temperature these days. If it is running higher than that I would start by checking the fan clutch. These can fail and cause both over cooling (if they fail and stay on) or overheating if they fail and do not engage as needed.
If the fan clutch is okay then you may have a partially plugged radiator.

However, I would use a mechanical temperature device first to verify that it is actually running hotter than it should.
Was this
answer
helpful?
Yes
No
Sunday, April 29th, 2018 AT 8:52 PM
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Replace the Viscous Fan Drive.
Was this
answer
helpful?
Yes
No
Monday, April 30th, 2018 AT 7:47 AM

Please login or register to post a reply.

Sponsored links