Big T
Well-Known Member
After about 20 minutes, can repeat the process. Motor works for about a minute, then shuts off. I recently replaced the resistor on top of the motor.
-
Welcome to The Truck Stop! We see you haven't REGISTERED yet.
Your truck knowledge is missing!
- Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
- We have tons of knowledge here for your diesel truck!
- Post your own topics and reply to existing threads to help others out!
- NO ADS! The site is fully functional and ad free!
Problems registering? Click here to contact us!
Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!
Blower Motor Works Briefly, Then Trips Off
- Thread starter Big T
- Start date
Will L.
Well-Known Member
Can you get an inductive amp gauge over the wire feeding it and see if it is increasing load before stopping? If so sign of motor going or loosing it’s ground.
Big T
Well-Known Member
Location?
Big T
Well-Known Member
Have no idea what you're talking about. Please explain with more detail and in simpleton language.
ak diesel driver
6.5 driver
He's talking about the blower motor connector . They are known to melt.
Big T
Well-Known Member
Where is it located?
ak diesel driver
6.5 driver
if IIRC it's above the motor. Just follow the wires from it
The connector is usually wrapped in foam tape of some sort. Behind glovebox. General picture here of a melted one and other info on what could have failed in the control head. How old is the motor? It wouldn't hurt to check voltages at the motor when it trips off. Post#3
http://www.thetruckstop.us/forum/th...ers-w-blower-off-erratic-or-no-airflow.28385/
http://www.thetruckstop.us/forum/th...ers-w-blower-off-erratic-or-no-airflow.28385/
Will L.
Well-Known Member
I was sayin Measure amp draw of motor when it is running and as it dies- the connection they are talking about is most likey issue
Big T
Well-Known Member
It is the original blower motor. 1999 K2500 with 216K miles.
Big T
Well-Known Member
Big T
Well-Known Member
ak diesel driver
6.5 driver
It can point to the blower motor pulling more juice than normal but the connection is also a weak link. Measuring the amp draw is the only real way to tell
Big T
Well-Known Member
How do I measure the amp draw? Where do I attache the amp meter for the test? On the exposed wire where it melted?
Big T
Well-Known Member
I went out and put the amp meter on it. It pulls 19.6 on the uA setting. After about 30 seconds, it starts to get hot and then it loses connectivity and motor goes off. Jiggling the wire gets the motor going again. So it sounds like the plug is bad. What do you do for a replacement?
Big T
Well-Known Member
Blower control module is only on vehicles with auto temperature control. All others got just the resistor.
Having trouble finding a plug replacement.
Having trouble finding a plug replacement.
I would cut the wires back to where they are not burned, crimp, solder, and tape it up. The connector is for the assembly line. You may have to replace the wire if its coroded or melted a long run.
Then I would replace the high hour/ mile blower motor as IMO high amp draw is a possibility for failure. So is age and corosion on the connector. AC Delco IMO are quiet vs. cheap loud knock off motors.
Add a ground strap to the blower motor to body. Ground resistance adds problems to the circuit.
Then I would replace the high hour/ mile blower motor as IMO high amp draw is a possibility for failure. So is age and corosion on the connector. AC Delco IMO are quiet vs. cheap loud knock off motors.
Add a ground strap to the blower motor to body. Ground resistance adds problems to the circuit.
Big T
Well-Known Member
Rockauto does not offer an AC Delco Blower Motor. I looked up the part on AC Delco's site and they give a Part # 15-80665. I do a search and Amazon has this AC Delco Blower Motor for $77.73 with free shipping. However, I get the disclaimer that it does not fit my 1999 Suburban K2500. So I'm confused at this point.
