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 Howard Your Own Question
Howard, ASE Certified Technician
Category: Jeep
Satisfied Customers: 389
Experience:  Over 20 Years experience in automotive repair; owner of Duncan's Mobile Automotive, LLC for 7 yrs
Type Your Jeep Question Here...
Howard is online now
A new question is answered every 9 seconds

I have a 99 Jeep Grand Cherokee Laredo, and the coolant low

Customer Question

I have a 99 Jeep Grand Cherokee Laredo, and the "coolant low" message came on. It started making a grinding and boiling water noise. I added the 50/50 coolant, but I poured it in the plastic reservoir and not in the radiator. The message is now gone, but this noise is now louder. what could it be now? are the noises and the coolant being low related? Please help.
Submitted: 7 years ago.
Category: Jeep
Expert:  Howard replied 7 years ago.


When the engine is cool, you need to add coolant to the radiator. Just filling the plastic reservoir is not sufficient as this is your overflow. Hope this helps! Regards, Howard

Customer: replied 7 years ago.
ok, will do. But what I want to know is do you think that the coolant is the cause of this awful noise? There is no smoke or anything coming from the engine area, but it does smell a little like burnt rubber.
Expert:  Howard replied 7 years ago.
Ok here's what I would like for you to do. Go out and look at your water pump pulley it's in the center of the engne. See if you can move it from side to side it sounds like your water pump is out. If it is you will need a new water pump and drive belt. I think you are hearing the bearing in the water pump and the burning smell is the belt trying to turn a locked up pulley. Thanks i'll be here let me know
Customer: replied 7 years ago.

I checked the pulleys and they are not loose. After I put the coolant in the radiator, the noise stopped....temporarily. Its quiet with the truck running for about five minutes, then it starts with the squeeking noise again.

Expert:  Howard replied 7 years ago.
Ok if all of the pulleys are ok then the squeaking is probably just the belt right?
Customer: replied 7 years ago.
It seems as if the belt is the squeeking, i think thats it. I used a whole gallon to fill the reservoir up, and later I filled the radiator up with a gallon of coolant. I now notice a puddle of coolant under the car, and I see it dripping. do you think it is because I added too much coolant (2 gallons), or do you think its a leak in the hose?
Expert:  Howard replied 7 years ago.


Try spraying some WD40 on the belt to see if it quiets the noise. Also, it is possible you may have overfilled the coolant. I would take the car for a drive around the block to try to blow off any coolant residue that there may be. Then, when you come back, park the car in a different spot and let it run for 10-15 min and see if you see coolant leaking. If you do, there is a good chance you may have a leak in the hose. Even a pinhole leak can dump copius amounts of fluid :) Try this and get back to me; I'll be here waiting!

Regards, Howard

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

  • Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor. Lynn B. Ormond Beach, FL
< Previous | Next >
  • Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor. Lynn B. Ormond Beach, FL
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY

Meet The Experts:

  • Chris


    Shop Foreman

    Satisfied Customers:

    Jeep Certified Master Tech
< Last | Next >
  • Chris's Avatar


    Shop Foreman

    Satisfied Customers:

    Jeep Certified Master Tech
  • Mark's Avatar


    22 Year Factory trained technician

    Satisfied Customers:

    Jeep factory training........25 years in the industry.
  • Dave's Avatar


    Jeep Master Tech

    Satisfied Customers:

    Chrysler Triple Master, ASE master Tech AA degree in Auto.
  • moparfl's Avatar


    ASE Certified Technician

    Satisfied Customers:

    ASE Master Tech Chrysler Dodge Jeep Master Tech
  • Tim Mohr's Avatar

    Tim Mohr


    Satisfied Customers:

  • Ron Z.'s Avatar

    Ron Z.

    - Jeep Tech -

    Satisfied Customers:

    18+yrs experience. State Inspector & Jeep Diagnostics/Repair
  • jeepmopar76's Avatar


    Jeep/Chrysler Triple Master Tech

    Satisfied Customers:

    32yr ASE Master Tech, 9yr Chrysler Master Tech, 19 yr Jeep Dealership service including AMC/Eagle