ATXKJ wrote:
Do not trust the code - measure the resistance - should be ~.5 to 1.5 ohms - measure when cold (my bad ones have been ~120+ohms)
then pull the cap off the plug you think is right and measure again - it should be open.
The numbering is either off - or they start from the back - don't know but my # 3 - was the second from the front
and I'm now on my 5th glow plug for that cylinder in 3 months - the longest any has lasted is 2 weeks
2 dealerships and a DIY - not sure what's going on.
The resistor that drops the voltage going to that glow plug inside the glow plug module may be shorted out.
06 FSM p 967: MODULE-GLOW PLUG
DESCRIPTION
CAUTION: The glow plug system is a 7 volt system.
DO NOT ATTEMPT to test the glow plug system
with a 12V power source or damage will
occur.
The glow plug module (2) is mounted to the inner
fender between the battery and the master cylinder (1)
in the engine compartment. For an explanation of the
glow plug system operation (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/GLOW PLUG RELAY -
OPERATION).
OPERATION
CAUTION: The glow plug system is a 7 volt system.
DO NOT ATTEMPT to test the glow plug system
with a 12V power source or damage will
occur.
When the ignition (key) switch is placed in the ON
position, a signal is sent from the sensors to the ECM
relaying current engine coolant temperature and ambient
air temperature.
After receiving this signal, the ECM will determine if,
when and for how long of a period the glow plugs
should be activated. This is done before, during and
after the engine is started. Whenever the glow plug
module (2) is activated, it will control the 7 volt high
amperage circuit for the operation of the four glow
plugs.
The Glow Plug lamp is tied to this circuit. Lamp operation
is also controlled by the ECM.
With a cold engine, the glow plug module and glow plugs may be activated for a maximum time of 200 seconds.
Refer to the following Glow Plug Control chart for a temperature/time comparison of the glow plug relay operation.
In this chart, Pre-Heat and Post-Heat times are mentioned. Pre-Heat is the amount of time the glow plug control
circuit is activated when the ignition (key) is switched ON, without the engine running. Post-Heat is the amount of
time the glow plug control circuit is activated after the engine is operated. The Glow Plug lamp will not be activated
during the post-heat cycle.
I suspect the Steeler's tech did not bother to check for 7volts output to the glow plug, if you have more, the Laws of Physics indicate you will cook the glow plug.
Since this a Dealer Cluster F#*&, you may have a way to get Chrysler to pay for it under a State Lemon Law, since they never fixed it or had a test that does not take a little deductive reasoning to come up with, but I am not a Lawyer.
If you really want to P!$$ them off, ask Chrysler if they plan to install a Vending machine where you drop in the junk glow plug or put a credit card in the slot
Good Luck
Shooting trouble and sniping Cluster F#*&$ is my job
