2000 pontiac Montana
3.4 V6

tech = jk
question = i have a Montana that wont start when its cold or damp or
when it sits for 8 hours or more but if i plug the van in with block
heater it will start when it does start it run a little on the rough side
until the engine warms up ,just wondering if it could be the temperature
sensor  let me know what you think thank you


JK:
Hard starting when wet or damp outside is usually caused by corroded
ignition coil towers and spark plug wires. Just pull them off one at a time
and look for corrosion or
rust on the coil tower and inside the plug wire.
Plugged injectors are a common  cause for running rough. Also the fuel
pressure regulator leaking fuel into the vacuum line will cause a hard / no
start and running rough, but damp weather would not make a difference.
/
WARNING LIGHTS
Other Repair
Questions
2005 Pontiac Montana V6.
Question: My cruise control just stop working, it has worked fine and then nothing, you move the
switch and no light..nothing.
Answer: You're problem would need some in person diagnosing, as
it could be many different things that are causing the cruise control
not to work. First off, you should check the fuses and make sure
that one isn't blown, that's about the easiest first step I can suggest.
If the light doesn't come on, there is a possibility that the cruise
switch is shorted out, or there is a problem with the wiring to the
switch. Another thing that could be faulty is the actual cruise control
unit itself. It is called the cruise module and does the actuating of
the cable to the throttle to control the speed for the cruise control.
When the module goes bad, it causes no function to work. Usually
the switch will still work and the light will come on, but not always. As
you can see, there are quite a few possibilities here that can be at
fault. It would take some looking into by a qualified technician.