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Micallef 12-31-2009 06:14 PM

technical problem please help!
 
Okay so its something small but something big at the same time lol,

so i went for sushi with the gf today, and when i got back to my jeep, i turned it on, and 4 things stayed lit on the dash after it was turned on, the e-brake light, the engine light, the abs light, and the esp-bas light, they are all straight down the middle, and this is on an 07 grand cherokee laredo.

the only thing i did before this occurred, was simply replace a fuse for the 12 volt outlet, and it was just a simple fuse replacement, nothing out of the ordinary,

when i tried to drive, it would only reach a certain speed then would not go any faster, and would not show what speed i was going on the speedometer, just the revs, it seemed very "slow" and was very responsive as far as switching from reverse to drive goes.

i attempted to simply turn it off and on a few times to shake whatever it was that was happening, but no dice, i attempted to reset everything but that did not help either,

anyone have any information on this would help me out a lot and save a great deal of time, thanks in advance guys!

Scottina06 12-31-2009 08:09 PM

Re: technical problem please help!
 
you need to pull the codes somehow....go to an advanced auto, autozone or do the key dance and get the codes. We can go from there.

HEMIBeast 12-31-2009 08:23 PM

Re: technical problem please help!
 
Key cycle it bro.

Retrieving codes (2005-2010 Grand Cherokee):
Insert and turn the ignition key from "Off" to "On" three times, moderately fast and without pausing ("ON" is when the digital odometer displays):

Micallef 01-01-2010 01:25 PM

Re: technical problem please help!
 
okay ill be sure to give it a shot, i just woke up so gimme a bit, lol yea it was a good night indeed haha :P

Micallef 01-01-2010 01:32 PM

Re: technical problem please help!
 
okay so i did the "key dance" and this is what was shown,


DTC REPORT

U 0121
U 1110
U 1120
DONE

what do i do what do i do what do i do?!?!

Micallef 01-01-2010 03:53 PM

Re: technical problem please help!
 
those are the codes, can anyone help? what do they mean? what do i need to do?!

SvenskaJeepGuy 01-01-2010 03:57 PM

Re: technical problem please help!
 
http://www.wkjeeps.com/trouble_codes.htm

Frankie 01-01-2010 04:17 PM

Re: technical problem please help!
 
Quote:

Originally Posted by Micallef (Post 124265)
okay so i did the "key dance" and this is what was shown,


DTC REPORT

U 0121
U 1110
U 1120
DONE

what do i do what do i do what do i do?!?!


Loss of Serial Communications for Class 2 Devices ... Not exactly sure what that means though! LOL

Scottina06 01-01-2010 04:20 PM

Re: technical problem please help!
 
http://www.jeepgarage.org/f77/diagnostic-trouble-codes-71.html

codes are rght here as well...

U 0121-not listed but a govt required code

U 1110-Loss of Serial Communications for Class 2 Devices

U 1120-Loss of Serial Communications for Class 2 Devices

they are all air/fuel related

Have you checked your iat sensor? I know you have a new CAI.

SvenskaJeepGuy 01-01-2010 04:37 PM

Re: technical problem please help!
 
will CAI mess up that sensor? i was looking at getting one as well

Scottina06 01-01-2010 06:52 PM

Re: technical problem please help!
 
Quote:

Originally Posted by SvenskaJeepGuy (Post 124323)
will CAI mess up that sensor? i was looking at getting one as well

no...but if the iat sensor comes loose, or there is a leak in the CAI you could possibly throw a code

Micallef 01-01-2010 06:54 PM

Re: technical problem please help!
 
i am gonna be home soon, i will check the intake, maybe make sure its all hooked up properly,

i will check these when i get home and make sure the sensors are working and all,

Thanks for the help i will keep you guys posted with how it turns out!


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