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Go Back JeepForum.com > Models > Jeep Liberty Forums > KK Liberty Forum > Possible Catalytic Converter or Transmission problem

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Unread 03-10-2015, 07:25 PM   #1
Blayton
Registered User
2009 KK Liberty 
 
Join Date: Dec 2014
Location: winston salem, North Carolina
Posts: 1
Possible Catalytic Converter or Transmission problem

I have a 2009 Jeep Liberty and I think there may be a problem with the catalytic converters and/or the transmission. The check engine light is on. I have had the OBD scanned and the only thing found was a bad catalyst. Sometimes, going up hills at around 50 and accelerating, it sounds like it's trying to downshift, and the car shakes. I have to kind of pump the gas if you will, to get in to the lower gear to accelerate. Today, the check engine light began flashing and the car started beeping (same sound as if you had no seat belt on). I noticed it did it more when I accelerated. The light would flash for a bit, then stop, off and on. I am planning on getting the bad catalytic converter(s) replaced soon. I do think it is an issue with the transmission aswell, but am not too sure. Any opinions? If I need to clarify anything, please ask.

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Unread 03-10-2015, 08:50 PM   #2
Gageraid
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2008 KK Liberty 
 
Join Date: May 2012
Location: Branchburg, New Jersey
Posts: 1,483
If you get the Jeep scanned, get us the codes listed.
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OME lift
Hypertech Max Energy
CAI, Gibson exhaust, 4.7L throttle body
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Unread 03-10-2015, 09:30 PM   #3
Gemdog
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2010 KK Liberty 
 
Join Date: Nov 2013
Location: Melbourne, Australia
Posts: 56
The Key trick works on the KK to get the codes, follow this vid and tell us which codes you got back.
(Regardless of having an EVIC, it will come up in the odometer)

I usually film the odometer when doing it, as if there is more than one code it will scroll through them.
If the light isn't on anymore, it may not report historical codes, at which point you'll need a scanner to get to the freeze data on the ecu.

It will come up something like this:
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Unread 03-11-2015, 05:13 AM   #4
RENE65
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2008 KK Liberty 
 
Join Date: Dec 2011
Location: LAVAL, QUEBEC
Posts: 258
the trans is trying to make the truck go foward but the engine has no power because the cat is blocked.fix the cat and the trans should be ok.do not keep on driving if the light is flashing or expect extra $$$$ to fix extra problems if you do.
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Unread 03-11-2015, 05:38 AM   #5
bigpopi79
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Join Date: May 2014
Posts: 12
I had a similar problem. Mine would feel like it falls on its face almost like a miss. I had the bank two cat efficiency code got a new cat put on changed plugs and got a fuel system cleaner and runs good now
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Unread 03-11-2015, 05:39 AM   #6
pshivers
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2008 KK Liberty 
 
Join Date: Sep 2012
Location: Westerville, OH
Posts: 241
The cat problem is a symptom, not the cause. There is an issue with your engine dumping raw fuel into the exhaust, which in turn, will melt your cats. The cats should last a really long time. The check engine light blinking is your warning to turn off the car immediately.

Pull your plugs and see which one doesn't look like the others. That's how you might find your problem cylinder. While you're at it, when was the last time you changed the plugs? These engines require simple, cheap copper plugs every 30k miles.
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Unread 03-11-2015, 09:35 PM   #7
streetglideok
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2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Colorado Springs, Colorado
Posts: 2,615
Quote:
Originally Posted by pshivers View Post
The cat problem is a symptom, not the cause. There is an issue with your engine dumping raw fuel into the exhaust, which in turn, will melt your cats. The cats should last a really long time. The check engine light blinking is your warning to turn off the car immediately.

Pull your plugs and see which one doesn't look like the others. That's how you might find your problem cylinder. While you're at it, when was the last time you changed the plugs? These engines require simple, cheap copper plugs every 30k miles.
Give this man an award! What he just said is spot on. Cats do not just melt down and plug up.
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