Misfire when wet

[Creepmsu]

Hi Folks,

Here is one for you. This past Sunday, I jumped in my 2011 Liberty with 115,000 on it and started it up. It seemed to be doing a little rough, but I didn't think anything of it really and took off. When I got to the main road and started to accelerate, it was very jerky and hesitant. Then the check engine light started flashing (which I know isn't good). As soon as I took my foot off the gas, the CEL went off completely and it smoothed out. When I accelerated again, same thing. CEL blinkijng and jerky. Drive it for a little bit and once the engine warmed up a bit everything smoothed out and no more CEL. I should also mention that it was very moist and dewy out that morning.

The next morning it was very dry. I jumped in and took off and no issues at all. Drive like a dream.

Today, it rained a bit and when I jumped in, it started doing the same thing as Sunday.

I have not taken it into get the codes pulled, but I am pretty sure it was misfiring and due to moisture/wetness.

Any ideas on what could be causing this?

 

[Martin059]

I just bought a 2011 Jeep Liberty about 2 weeks ago and noticed going up hill that it does a slight jerk feeling when I give it some gas to maintain speed. It only has 70,000 miles on it I wish I never got it.::: ( BUT NO ONE KNOWS ANYTHING ABOUT IT ON THIS CHAT ) about jeep issues sad form


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[tommudd]

I just bought a 2011 Jeep Liberty about 2 weeks ago and noticed going up hill that it does a slight jerk feeling when I give it some gas to maintain speed. It only has 70,000 miles on it I wish I never got it.::: ( BUT NO ONE KNOWS ANYTHING ABOUT IT ON THIS CHAT ) about jeep issues sad form


Sent from my iPhone using Tapatalk

Sad forum ?? LOL
Could be many things without more information no one can give a complete answer
So when was last tune up, does it do it any other times and things like that
Give more info and maybe we can help

 

[tommudd]

Hi Folks,

Here is one for you. This past Sunday, I jumped in my 2011 Liberty with 115,000 on it and started it up. It seemed to be doing a little rough, but I didn't think anything of it really and took off. When I got to the main road and started to accelerate, it was very jerky and hesitant. Then the check engine light started flashing (which I know isn't good). As soon as I took my foot off the gas, the CEL went off completely and it smoothed out. When I accelerated again, same thing. CEL blinkijng and jerky. Drive it for a little bit and once the engine warmed up a bit everything smoothed out and no more CEL. I should also mention that it was very moist and dewy out that morning.

The next morning it was very dry. I jumped in and took off and no issues at all. Drive like a dream.

Today, it rained a bit and when I jumped in, it started doing the same thing as Sunday.

I have not taken it into get the codes pulled, but I am pretty sure it was misfiring and due to moisture/wetness.

Any ideas on what could be causing this?

Have you checked the spark plugs/ boots/ wiring/ coil packs etc
Take a spray bottle and start spraying around all of the above areas.
Moisture is getting in somewhere