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I have a Volvo VNL670 blower doesn't engage when truck is in

Customer Question
Hello sir I have a...
Hello sir I have a Volvo VNL670 blower doesn't engage when truck is in idle and when it runs it turns on where is the blower located at and what can be the issue here it's. 2009
Submitted: 1 year ago.Category: Medium and Heavy Trucks
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Answered in 50 minutes by:
11/14/2016
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,393
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
Verified

My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow ups are free after ratings, so rate in confidence!

Do you have any A/C codes on the dash? Alternator working properly? Have you tried a new blower motor on this yet?

Sounds like there is a voltage issue getting to the blower motor from the alternator or the voltage regulator, which is in the alternator. The only time I have had a fan do that it wasn;t the fan, it was the alternator not supplying enough power to the cab of the truck and the blower was shut down for protection of the truck to kep the engine running. I know it sounds weird, but these systems are module controlled and that is what it di with me. Check the alternator output first and rule it out.

_______________________________________________________________________________

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

Once an answer is provided, you should see a rating screen. Please rate my personal service to you. The ratings are my personal feedback, they are not the site feedback.

Thank you for allowing me to assist you through Just Answer!

Jeremy

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Customer reply replied 1 year ago
Ok how much does my alternator to be putting out
Customer reply replied 1 year ago
I'm getting 13.9 V from the alternator the blower hasn't turned on
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago

Hmmm... Do you have any codes for the A/C on the dash from the module at all?

Your alternator is putting out the right voltage.

If you rev the engine, the blower comes on or after you start driving? What if you tap the motor on the side, will it engage then while idling?

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Customer reply replied 1 year ago
Where is this motor located and I will check the dash again
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago

Right side in the dash.

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Customer reply replied 1 year ago
inside glove compartment?
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago

Yes, behind it.

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Customer reply replied 1 year ago
No codes on there Dash
Customer reply replied 1 year ago
it still turns on only when the truck drives what can it possibly be the voltage is good there is no problem with that
Technician: Jeremy, Certified Truck/Bus Technician replied 1 year ago

The only other areas it could be would be the head unit itself (which is what controls the whol AC system aka the knobs) or the relay under the top center of the dash. With no codes, there are no elctrical faults being detected. The blower motor can be faulting, but that is certainly a weird issue to not have faults or voltage issues...

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Technician: Jeremy, Certified Truck/Bus Technician replied 11 months ago

I see you viewed this and this is still showing as an open question due to no positive (3 stars or more) rating.

Were you not pleased with my service to you or is there a rating issue? Please let me know if you still need assistance with this, if there is a rating issue, and/or you need more time to respond.

I like to make sure all my customers are satisfied since you did pay a deposit for me to assist you, whether I’m paid by a positive rating feedback or not.

We can continue where we left off or start over if needed. Also, if you need diagrams, instructions, etc please don’t hesitate to ask.

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Customer reply replied 11 months ago
I have not had truck in to continue with this issue
Technician: Jeremy, Certified Truck/Bus Technician replied 11 months ago

I was following up because the question timed out on me where I won't see the replies because there were no ratings made. It is treated like the question was abandoned and I wanted to follow up to make sure it was still active for when ready to continue.

Ask Your Own Medium and Heavy Trucks Question
Technician: Jeremy, Certified Truck/Bus Technician replied 11 months ago

I see you viewed this and this is still showing as an open question due to no positive (3 stars or more) rating.

Were you not pleased with my service to you or is there a rating issue? Please let me know if you still need assistance with this, if there is a rating issue, and/or you need more time to respond.

I like to make sure all my customers are satisfied since you did pay a deposit for me to assist you, whether I’m paid by a positive rating feedback or not.

We can continue where we left off or start over if needed. Also, if you need diagrams, instructions, etc please don’t hesitate to ask.

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Customer reply replied 11 months ago
I haven't fixed this truck will let you know when I start on it
Technician: Jeremy, Certified Truck/Bus Technician replied 11 months ago

The site timed the question out is why the response was made.

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Technician: Jeremy, Certified Truck/Bus Technician replied 11 months ago

This has been worked for over a month with no rating. Since it appears no rating will be given, I am opting out of this.

Good luck on your future repairs.

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Jeremy
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3,393
3,393 Satisfied Customers
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

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