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-   -   Help. (https://landroverforums.com/forum/discovery-ii-18/help-88240/)

landroverdude 02-15-2018 11:12 PM

Help.
 
Hi, I have a land rover discovery 2 2003 and when I am driving sometimes the car will shoot up the rpms very high and slow me down and not let it go over 30 and I park and put it in drive again and it fixes it, what could be the problem? Also my 4wd lo won't let me shift into it, it just gets stuck in neutral and I can't push it into Lo.

The Deputy 02-16-2018 03:17 AM

How many miles? Does it seem like the Trans is slipping when it does this? Has the Trans filter or fluid ever been changed?

Lubed the living daylights out of both ends of your hi-lo cable, with WD40, let it soak, lube again, let it soak. Then, the vehicle has to be rolling slightly, about five miles an hour, trans in neutral, while pushing gentle forward to get into low. DO NOT FORCE IT...you will be very, very unhappy if you bend or break the cable ends. Replacing the cable is not fun.

Brian.

landroverdude 02-16-2018 03:57 AM


Originally Posted by The Deputy (Post 637232)
How many miles? Does it seem like the Trans is slipping when it does this? Has the Trans filter or fluid ever been changed?

Lubed the living daylights out of both ends of your hi-lo cable, with WD40, let it soak, lube again, let it soak. Then, the vehicle has to be rolling slightly, about five miles an hour, trans in neutral, while pushing gentle forward to get into low. DO NOT FORCE IT...you will be very, very unhappy if you bend or break the cable ends. Replacing the cable is not fun.

Brian.

the guy who I bought it from did not tell me much so I don't know if the filter or fluid has been changed so I definitely will change it but when the rpms shoot up and that thing happens it doesn't jerk or move or anything, so I don't know if it's slipping or just another small problem.

abran 02-16-2018 08:17 AM

Any dash/warning lights come on? When you first turn the key to position 2, are all the warning lights present on the dash?

im wondering if it’s not going into limp mode where the trans defaults to 3rd gear.

coors 02-18-2018 08:01 AM


Originally Posted by landroverdude (Post 637220)
Hi, I have a land rover discovery 2 2003 and when I am driving sometimes the car will shoot up the rpms very high and slow me down and not let it go over 30 and I park and put it in drive again and it fixes it, what could be the problem? Also my 4wd lo won't let me shift into it, it just gets stuck in neutral and I can't push it into Lo.


first thing I would suggest is checking the transmission fluid level. The ZF units in our Discos are fairly robust. That said, it does need proper fluid to operate correctly.

While on a flat surface With the engine running (at temperature - temp gauge needle in the center of the gauge) crawl underneath and remove the trans “fill” plug if Zero fluid trickles out of the fill cavity - it’s low. Add the proper fluid until it begins to trickle out.

After filling w/ fluid: Replace cavity fill plug, and Shift through the gears, starting in 1st, every 2-3 seconds shift to the next gear. This will promote fluid dispersement throughout the trans. After completing the procedure remove fill plug and re-check fluid levels. If zero fluid trickles out, repeat the process above until it does.

Other issues you you could be looking at are most likely Torque Converer related or burnt clutches...

number9 02-18-2018 07:46 PM


While on a flat surface With the engine running......

Shift through the gears, starting in 1st, every 2-3 seconds shift to the next gear. This will promote fluid dispersement throughout the trans.
.
From a LR Trans Manual,

Most service station attendants (where they still exist) and owners have learned to check the fluid
level hot - which is INCORRECT for a ZF unit. Level must always be checked cold.
Checking the level hot will make the transmission appear to be overfilled when in fact it is at the
correct level. Underfilling is similar to overfilling - fluid foaming and pump cavitation normally
result.
Shifting through the gears also needs to done when level is first checked to get an accurate level indication. After shutdown fluid from the TC drains back into the pan. Until the shift routine is done fluid level may indicate higher than normal.

Fill/check of fluid level should be done when cold/cool.
......

landroverdude 02-18-2018 09:19 PM

Well **** now I have a bigger problem my rover just did something and broke and it will go in reverse but not go forward it just revs the rpms up, did my transmission just go out?

DiscoCam 02-18-2018 09:45 PM


Originally Posted by landroverdude (Post 637516)
Well **** now I have a bigger problem my rover just did something and broke and it will go in reverse but not go forward it just revs the rpms up, did my transmission just go out?

Drain it and see how it looks. Drop the pan and see if there's anything inside. Fluid condition is very helpful in determining what happened.

number9 02-18-2018 10:44 PM


when I am driving sometimes the car will shoot up the rpms very high and slow me down and not let it go over 30

Also my 4wd lo won't let me shift into it

im wondering if it’s not going into limp mode where the trans defaults to 3rd gear.

Well **** now I have a bigger problem
You need to answer the questions we ask if you want help.

When do/did the rpms shoot up and at what speed (MPH)? Does this occur when accelerating from a stop or when driving down the road at a steady speed? Does the dash gear position indicate the same as the shift lever position? Do you have access to a code reader?

As abran asked do you see the M & S indicator lights. They should be steady in key position 2 and would flash if in the limp Mode. A bad x,y,z switch can prevent shifting into low range and cause shifting problems that are temporarily cleared my shutting down and restarting.

You do need to at least check/service the trans fluid level as a start.

Your D2 is always in 4WD.
......

mollusc 02-19-2018 07:34 AM


Originally Posted by number9 (Post 637512)
.
From a LR Trans Manual,Shifting through the gears also needs to done when level is first checked to get an accurate level indication. After shutdown fluid from the TC drains back into the pan. Until the shift routine is done fluid level may indicate higher than normal.

Fill/check of fluid level should be done when cold/cool.
......

Which means that the engine should be cold when you start it.


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