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I have a 2012 Peterbilt 587 with Paccar engine. Low coolant…

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I have a 2012...

I have a 2012 Peterbilt 587 with Paccar engine. Low coolant light comes on after about 2-5 minutes of idling. Reservoir is full. If I take off immediately after starting truck before light comes on and drive it doesn't come on. When I st

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts.

I have a 2012 Peterbilt 587 with Paccar engine. Low coolant light comes on after about 2-5 minutes of idling. Reservoir is full. If I take off immediately after starting truck before light comes on and drive it doesn't come on. When I st

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

When I stop low coolant light comes back on. Checked reservoir. Still full. Unplugged wire to sensor and plugged back in. No change

Submitted: 3 months ago.Category: Medium and Heavy Trucks
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Answered in 16 minutes by:
4/1/2018
Technician: Wayne, Journeyman replied 3 months ago
Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 11,217
Experience: worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
Verified

Hi, I’m Wayne.

I will be assisting you with this issue today.

This is a common issue remove the sensor in the reservoir

use fine sandpaper/steel wool and clean it

it gets a film on the probe, still does the same thing replace the probe

I hope this helps you

Wayne

My goal is to give you the best experience possible.

I hope that I have earned a 5-star rating

Found at the top of the screen before you leave today.

If you need more assistance, please use the reply box and let me know.​

Ask Your Own Medium and Heavy Trucks Question
Technician: Wayne, Journeyman replied 3 months ago

Hi

I took the time to look up and answer your question

Please take the time to reply to me

or it does not look good for you in the future on questions

as experts see a no response

Wayne

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