Hello every1, i been having my disco ii for a year now, the best truck ever... I recently went to store (Thursday) , stay inside less then 5 minutes, when i try to start again, i didnt, turn and turn, but just didnt start, so i left it there, after work, i went get it with a mechanic and i just started fine, but goin home the green lights "S" and "M" were blinking together with the "D" it kind of jump like wanted to stall, but it brought me home, i change the spark plugs and wires, put some fuel injector cleaner in the tank and it did it again yesterday.... After I turn it off and try to start it again just did not, wait about 20 minutes it start again... Anybody can help me and tell me what i coul be wrong....

Thanks

 

Put a battery charger on the truck and charge the battery all day, then go and have the alternator and battery tested.
When the "M" "S" adn "D" lights all come on on the dash that means that you have low battery voltage.
When you have low battery voltage the transmisison goes into "limp" mode which is 3rd gear only.
It starts from a dead stop in 3rd and wont upshift into 4th or downshift into 2nd or any other gear.
But it sounds to me like you have a bad battery.

 

After charging and test the battery, make sure the cables are clean and tight. If it happens again, most likely you have a crank sensor failing.

 

goin rite now to autozone to check on battery issue, and will let u'll know what happen... thanks lot Spike and Mike....

 

That happened to me recently, was the crank posistion sensor.

 

By the way, the crank sensor has some codes but rarely will throw them when it fails.

 

thanks every1, took me a while to answer back, but work had keep so busy, dont have time to do nothing but come home shower and go to bed.... I took yours advice and i change the cps, and it is running like new.... did it in bout 1 hour, cost me $65, ... Now my airbag driver side, when i hit a bump really hard, or i cut a corner to the right really fast, where the truck leans to the driver side, it goes down, i dont think i would be a leak, cause trucks stays up all the time, but exept when i hit a bump....
any ideas what i could be?

 

A bad height sensor would be my guess.