Keep Liberty 2008 shaking at start up

[Chrisperuny]

Shaking at start up about 10 seconds and then shuts off. I attach a video. Any ideas what's the problem? Bought it with 20,000 miles. Yesterday I replaced spark plugs only. Car is 72,000 now. Thank you.
https://m.youtube.com/watch?v=tOiuyMTigf8

 

[profdlp]

[YT]tOiuyMTigf8[/YT]

I can't help with any advice, but I embedded your video so lazy people will be more likely to view it. :icon_lol:

 

[uss2defiant]

did it happen before you changed the spark plugs?
What are the CEL codes? looks like it is on.

 

[Chrisperuny]

It happened before i change them but once in a blue moon. But now I feel like it's happening like 5 times in 1 day. There are no codes, no service engine light. I noticed the same shaking one time that run out of gas.

 

[Chrisperuny]

Hard to tell if it's on. It's a lot of shaking and then stops completely

 

[renegade 04]

You should clean your throttle body as having a dirty throttle body will make it idle like trash.

 

[CactusJacked]

There are no codes, no service engine light.

You see the lit up amber image to the left of the speedometer that looks like an engine? That's your check engine light, and yes it is on, which means there's a stored error code. Did you check using the ignition key trick and got nothing? If you don't have a scanner, take the Jeep to Autozone. They'll scan it for you for free, and then you shouldn't have to guess at what the problem might be.

 

[uss2defiant]

so the entire video is you trying to start your jeep or did you start it then let it run for a few seconds?

 

[CactusJacked]

I'm hearing the engine run, going putt putt. The tachometer is also showing the engine is running.

 

[CactusJacked]

I know I suggested taking it to get scanned, but it may take forever to get there going in 10 second spurts.
If you don't have the means to scan it at home, and are otherwise shooting in the dark, it will need to get towed, trailered or pushed in somewhere.

 

[ftaa]

coil packs prolly. it is at that mileage no ?

 

[kuench]

Occasionally when my engine is flooded, it starts lie that until I rev the engine for a few seconds. I don't get an CEL light though.

 

[Marlon_JB2]

You see the lit up amber image to the left of the speedometer that looks like an engine? That's your check engine light, and yes it is on, which means there's a stored error code. Did you check using the ignition key trick and got nothing? If you don't have a scanner, take the Jeep to Autozone. They'll scan it for you for free, and then you shouldn't have to guess at what the problem might be.

His Jeep is cranking, it isn't running. The issue here is that his vehicle is NOT starting at all. The CEL won't shut off until the engine is running, and that ain't happening.

TIP Start is in all KKs and it'll crank until the engine runs for about 15 seconds, then give up, as seen here.

We have had, myself included, startup issues in the KKs and nobody has been able to figure out the problem yet.

 

[CactusJacked]

His Jeep is cranking, it isn't running. The issue here is that his vehicle is NOT starting at all. The CEL won't shut off until the engine is running, and that ain't happening.

According to him, it is running:

Shaking at start up about 10 seconds and then shuts off.

 

[dude1116]

Surprised nobody asked what kind of spark plugs you used... Can you answer that? Copper only in these!

 

[Marlon_JB2]

According to him, it is running:

I'm aware, but it isn't running.

Here is another video of a KK doing the same thing, except he's lucky enough for his to finally run.

http://youtu.be/v5dM5--ZXHs

 

[ftaa]

its cranking while "running to try and get running .. its not.

 

[Marlon_JB2]

I can't wait for someone to get to the bottom of this issue. I'm about tired of it.

Dealers can't ever replicate it, it happens entirely randomly, and frustrates people, always happens at the entirely wrong time, and is very embarrassing.

 

[ftaa]

i used to have a malibu that did imilar thing but it wa omethign to do with the antitheft.

 

[dude1116]

I'm aware, but it isn't running.

Here is another video of a KK doing the same thing, except he's lucky enough for his to finally run.

http://youtu.be/v5dM5--ZXHs

The poster of this video stated it was his fuel pump.

The problem was that the fuel pump was leaking down so it wasn't holding pressure. A leak down test confirmed this. The pump would still raise the fuel pressure to the correct pressure but it would leak down over a period of an hour to several days. Replacing the fuel pump solved the problem.