what causes no fire to spark plug on a 2003 jeep liberty


Asked by May 28, 2015 at 11:43 AM about the 2003 Jeep Liberty Sport 4WD

Question type: Maintenance & Repair

my jeep liberty overheated and completely shut down on side of road, head is still
good ,getting fuel,fuel pump working,compression good ,turns over but not getting
fire to spark plugs

7 Answers


Instead of shooting in the dark, did you put diagnosis tool and see if any codes are showing up? if so what are they?

1 of 1 people found this helpful.
Best Answer

Tried diagnosis tool at first it showed throttle emissions control sensor but that wouldn't cause not to fire at all...so friend erased code after that was done....it said something like no DTC codes were found in PCM I believe.....my uncle is disabled & not able to work on his vehicle but he has much knowledge in this area....he said its getting fuel turning over strong but getting no fire.... If u could help us out it would b much appreciated... Ty for ur hskl

2 of 2 people found this helpful.

The throttle sensor will cause what you are telling me. http://repairpal.com/throttle-position-sensor-may-fail-473 if that the code that came up, let go ahead and change it. I would also clean the throttle body as well.

3 of 3 people found this helpful.

its an easy swap, and its located near the throttle and should take 20 mins at the most. lets see what happens.


Here is a list of the codes: http://www.engine-light-help.com/jeep-check-engine-light.html

4 of 4 people found this helpful.

You may also want to check the crankcase sensor even though you are not getting that code and will cause the car not to start. https://www.youtube.com/watch?v=rZIIJo6OHNM

1 of 1 people found this helpful.

Let me know how you make out.

2 of 2 people found this helpful.

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