99 JGCL check light and jerking transmission

I have a 99 JGCL V8 4X4, 50k miles. Today the Check Engine light went
on and the transmission began to jerk from N to D and from 1st to 2nd
gear, something that never happened before.
I will try to go to AutoZone and have the code pulled, but any
information from good people will be appreciated.

Thanks,
Les

plusa did pass the time by typing:
> I have a 99 JGCL V8 4X4, 50k miles. Today the Check Engine light went
> on and the transmission began to jerk from N to D and from 1st to 2nd
> gear, something that never happened before.
> I will try to go to AutoZone and have the code pulled, but any
> information from good people will be appreciated.

Check the transmission fluid level for starters.

--
DougW

The light ninety nine percent of the time is a loose car cap. Pull
the codes by turning the ignition key until the digital odometer
displays, repeat three times in succession and then back to "On"
(On/Off, On/Off, On/Off, On). Code:
http://www.wjjeeps.com/faultcodes.htm Video:
http://www.billhughes.com/faultCode.mpg
God Bless America, Bill O|||||||O


plusa wrote:
>
> I have a 99 JGCL V8 4X4, 50k miles. Today the Check Engine light went
> on and the transmission began to jerk from N to D and from 1st to 2nd
> gear, something that never happened before.
> I will try to go to AutoZone and have the code pulled, but any
> information from good people will be appreciated.
>
> Thanks,
> Les

And the color and smell and consistency (foamy, milky) of the fluid in
addition to the level...

"DougW" > wrote in message
news:f4i0g.12171$IZ2.3479@dukeread07...
> plusa did pass the time by typing:
> > I have a 99 JGCL V8 4X4, 50k miles. Today the Check Engine light went
> > on and the transmission began to jerk from N to D and from 1st to 2nd
> > gear, something that never happened before.
> > I will try to go to AutoZone and have the code pulled, but any
> > information from good people will be appreciated.
>
> Check the transmission fluid level for starters.
>
> --
> DougW
>
>

A transmitter wired wrong will cause that.

That also maybe could be caused by the TPS. The TPS controls some shift
points, I don't know about the neutral shift though.... The electrical
connection on it can always benefit from a clean though. Contact
cleaner is best but WD40 will do in a pinch.

The Jeep transmission also does 'NOT' have a high water vent like the
diffs and t-case so you should make sure it isn't half full of water...
It will look like purple milkshake if water is in the fluid.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)


plusa wrote:
>
> I have a 99 JGCL V8 4X4, 50k miles. Today the Check Engine light went
> on and the transmission began to jerk from N to D and from 1st to 2nd
> gear, something that never happened before.
> I will try to go to AutoZone and have the code pulled, but any
> information from good people will be appreciated.
>
> Thanks,
> Les

I'd go with the gas cap if it weren't for the transmission also going
berserk. For that I'd almost guess a loose wire/ground somewhere as
I've not heard of TPS or CPS being that bizarre.

L.W.(Bill) Hughes III proclaimed:

> The light ninety nine percent of the time is a loose car cap. Pull
> the codes by turning the ignition key until the digital odometer
> displays, repeat three times in succession and then back to "On"
> (On/Off, On/Off, On/Off, On). Code:
> http://www.wjjeeps.com/faultcodes.htm Video:
> http://www.billhughes.com/faultCode.mpg
> God Bless America, Bill O|||||||O
>
>
> plusa wrote:
>
>>I have a 99 JGCL V8 4X4, 50k miles. Today the Check Engine light went
>>on and the transmission began to jerk from N to D and from 1st to 2nd
>>gear, something that never happened before.
>>I will try to go to AutoZone and have the code pulled, but any
>>information from good people will be appreciated.
>>
>>Thanks,
>>Les

In article >,
billy ray > wrote:
#And the color and smell and consistency (foamy, milky) of the fluid in
#addition to the level...

With the new ATF+4, the color is no longer an indicator.

/herb