How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Cat Man Your Own Question
Cat Man
Cat Man, Cat Engine Expert
Category: Construction and Road Equipment
Satisfied Customers: 8423
Experience:  I am ASE Master Certified.
30708357
Type Your Construction and Road Equipment Question Here...
Cat Man is online now
A new question is answered every 9 seconds

I have a cat 3126b that is overheating. I have changed the

Customer Question

i have a cat 3126b that is overheating. I have changed the water pump about two months ago and just changed the thermostats and flushed yesterday. It is still overheating. Belt is good and no slipping on pump. No visible coolant leaks
Submitted: 1 year ago.
Category: Construction and Road Equipment
Expert:  Cat Man replied 1 year ago.
Hi. Thanks for asking your question! I will try and help you out.
What temp is the engine getting up to?
Does the red engine warning light come on?
Customer: replied 1 year ago.
no light but gauge reads just below 250, verified temperature with infrared gun yesterday and it matched.
Expert:  Cat Man replied 1 year ago.
I see. Thanks for the information.
Since you have already replaced the water pump and thermostats. And the WP belt is tight. There are only two other things I have seen cause overheating.
The first is a collapsing lower rad hose.
Second is a clogged radiator on the inside. I know you had flushed the system already but to be honest many times flushing will not unclogg the radiator. It needs to be removed and sent to a radiator shop or replaced. I have seen this many times. I am sorry. I wish I had better news.
Please reply back if you need more help or have more questions. I am happy to assist.
Customer: replied 1 year ago.
i removed the thermostats and the engine is maintaining 125 deg with straight water does this mean the stats are bad or the engine?
Expert:  Cat Man replied 1 year ago.
I see. Thanks for the information.
That sounds like there's a thermostat problem. Normally removing thermostats causes the engine to run hot. Since yours did not. I must suspect the thermostats.
Please reply back if you need more help or have more questions. I am happy to assist.
Customer: replied 1 year ago.
These stats are three days old is it possible they are bad?
Expert:  Cat Man replied 1 year ago.
Yeah I knew you had changed them. Its rare but they could be bad out of the box.
Expert:  Cat Man replied 1 year ago.
Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.

Related Construction and Road Equipment Questions