Problem with my 2005 Chevy Monte Carlo
Mileage = 57000
Engine size = 3.8
dash lights = nope
codes = nope
work done prior = none
work done to repair = none
tech = jk,mw,kk,sf
question = after stopping and shutting off the engine ,removing the
key, why does my blower fan motor still runs. start and stop the engine, remove
the key, still runs, took the blower fuse out of the fuse panel by the
passenger side door, still runs. Took out the main 30 amp fuse under
the hood that says blower motor, it stops the fan.
JK:
By what you are describing, this sounds like the blower control module / resistor is shorted, or
the a/c control head is malfunctioning. The blower control module is the most likely cause since
pulling the 30 amp fuse takes all power from the module. The way to be sure is to disconnect the
blower module and test for speed signal coming from a/c control head. There should be no
signal with key off . Unplugging the a/c control head during this malfunction will also tell you if the
a/c control head is at fault. The blower control module receives signals from a/c control head
and power from that 30amp fuse, so disconnecting it takes both out of the system. The blower
control module is under the pass. side dash, in front of the blower motor. If would like to make a
donation/tip and come back I will help with step by step diag. of this system.
Mileage = 57000
Engine size = 3.8
dash lights = nope
codes = nope
work done prior = none
work done to repair = none
tech = jk,mw,kk,sf
question = after stopping and shutting off the engine ,removing the
key, why does my blower fan motor still runs. start and stop the engine, remove
the key, still runs, took the blower fuse out of the fuse panel by the
passenger side door, still runs. Took out the main 30 amp fuse under
the hood that says blower motor, it stops the fan.
JK:
By what you are describing, this sounds like the blower control module / resistor is shorted, or
the a/c control head is malfunctioning. The blower control module is the most likely cause since
pulling the 30 amp fuse takes all power from the module. The way to be sure is to disconnect the
blower module and test for speed signal coming from a/c control head. There should be no
signal with key off . Unplugging the a/c control head during this malfunction will also tell you if the
a/c control head is at fault. The blower control module receives signals from a/c control head
and power from that 30amp fuse, so disconnecting it takes both out of the system. The blower
control module is under the pass. side dash, in front of the blower motor. If would like to make a
donation/tip and come back I will help with step by step diag. of this system.
Problem with my 1997 Monte carlo LS
Mileage = 130059
Engine size = 3.1
dash lights = check engine lights flash
codes = p0300
work done prior = change all sparks plugs and wires
tech = all
question = Why does my check engine light have this code p0300. We replaced coils and spark
plug wire.
JK:
First you need to find out which cylinder(s) is misfiring.
If plugs and wires were replaced, another common cause for misfiring is
a burned / corroded ignition coil. That should have been obvious while replacing the plug wires.
Another common cause for p0300 on this engine is a sticking injector or rocker arm problem.
Click here for more info.
Mileage = 130059
Engine size = 3.1
dash lights = check engine lights flash
codes = p0300
work done prior = change all sparks plugs and wires
tech = all
question = Why does my check engine light have this code p0300. We replaced coils and spark
plug wire.
JK:
First you need to find out which cylinder(s) is misfiring.
If plugs and wires were replaced, another common cause for misfiring is
a burned / corroded ignition coil. That should have been obvious while replacing the plug wires.
Another common cause for p0300 on this engine is a sticking injector or rocker arm problem.
Click here for more info.
/
Blower motor stays on when the car is off.
