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 tkman55 Your Own Question
tkman55, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 139
Experience:  Diesel Truck Mechanic for over 34 years. Specialize in Thermo King and Carrier Transicold refrigerated units
Type Your Medium and Heavy Trucks Question Here...
tkman55 is online now
A new question is answered every 9 seconds

My Thermoking SB 190 Keeps blowing the Main Power 40 amp

Customer Question

My Thermoking SB 190 Keeps blowing the Main Power 40 amp fuse & will not start. Thank You James
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  tkman55 replied 1 year ago.

the 40 amp fuse is to the pull in circuit on the fuel solenoid it means the solenoid hi amp circuit it pulling to many amps and most likely the solenoid is not pulling in

the solenoid is on the back of the injection pump with a three wire harness connected to a connector by the starter disconnect and put a new fuse and see if it still blows

if not you are going to need a new solenoid

do you know if this has a Tier II engine injection pump with injector lines coming out of the back or with the lines coming off the top of the pump

Expert:  tkman55 replied 1 year ago.

You want a 5 star service and I want to provide a 5 star service. Please consider that I can't see, touch, smell, hear, or
taste the vehicle/machine in question. Please provide as much detail as possible and I will provide as much back.

The system DOES NOT automatically give me credit from your deposit. A rating is REQUIRED. You are rating me for the information I provide,
not the website. I have no control over the site fees, site errors, category errors, or how long it took for a response for these reasons.

I am not an employee of this website, so please rate with a POSITIVE (green) rating for me to get credit for assisting you. You still pay
for negative and no ratings I just get nothing.

I want you pleased with my service to you so please inform me before rating negative (red) and I will do my best to make it right. Follow ups
for same question are always free.


Expert:  tkman55 replied 1 year ago.

is your refer loaded?

Expert:  tkman55 replied 1 year ago.

the information I gave you is for a SR2 system if you have an UPVI monitor then you could also have a bad hi speed solenoid disconnect the outer wire on the solenoid to test that circuit

Expert:  tkman55 replied 1 year ago.

Did you find the problem?

Related Medium and Heavy Trucks Questions