WON'T GO OVER 45-50MPH!!!!!HELP

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WON'T GO OVER 45-50MPH!!!!!HELP

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Land Rover >> Vehicle Line Up >> Discovery >> WON'T GO OVER 45-50MPH!!!!!HELP

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WON'T GO OVER 45-50MPH!!!!!HELP - 4/13/2008 10:45:06 PM

sfxgamer

Posts: 13
Joined: 4/12/2007
From: San Francisco, CA
Status: offline

I have a 96 Land Rover Discovery. The other day I started it up and when I got on the freeway the rpms go up but it won't go into the last gear. you can hear the engine want to click in but it wont and it ends up downshifting. Anyone know what it could be? I checked the spark plugs and the wires and theyre good. Also had my fuel filter replaced about 4 months ago. Tranny fluid is fine also. Please get back to me ASAP thx!

Post #: 1

RE: WON'T GO OVER 45-50MPH!!!!!HELP - 4/14/2008 6:45:15 AM

cplthomas

Posts: 89
Joined: 3/21/2008
Status: offline

Any codes? The first thing to check would be the tranny fluid but, you said its good so ......

(in reply to sfxgamer)

Post #: 2

RE: WON'T GO OVER 45-50MPH!!!!!HELP - 4/14/2008 8:54:39 AM

geotrash

Posts: 277
Joined: 7/9/2007
From: Erie, CO
Status: offline

Not sure about the D1s but on the D2, the transmission won't shift into overdrive until the coolant temperature comes up to normal. First thing to do is stop by Autozone and have the OBD codes read to see if anything shows up.

If the system thinks the coolant temperature is not sufficient to engage overdrive, then there are several possible causes in 2 categories: Either it's a sensor problem or the coolant actually isn't coming up to temperature. If it's a sensor problem, then the fault codes would probably indicate this. If the coolant isn't coming up to temperature, then the thermostat could be stuck open.

Or...it could be something else entirely. In any case, get the codes read and stop back to let us know what they are.

Dave

_____________________________

'04 Land Rover Discovery S - Pretty much stock everything - 40K miles
'05 Mini Cooper S - 45K miles
'99 Isuzu Rodeo LS 4WD - 131K miles
'64 Cessna 182 - IFR, STOL

(in reply to sfxgamer)

Post #: 3

RE: WON'T GO OVER 45-50MPH!!!!!HELP - 4/14/2008 2:30:21 PM

Spike555

Posts: 4847
Joined: 6/22/2007
From: Grand Rapids MI
Status: online

Sounds stupid, but...are you SURE you are in "D" and not "3"? The shifter linkage can stretch over time and even though it says "D" it is actually in "3".
So next time on the highway and it doesnt shift nudge the shifter towards "N" and see if it up-shifts to fourth gear.

_____________________________

If it ain''''''''''''''''''''''''''''''''t leakin'''''''''''''''''''''''''''''''' it must be empty!
Yes, one man can change the world.
If the citizens are affraid then they are easier to control.

The "Storm Trooper",'''''''''''''''''''''''''''''

(in reply to geotrash)

Post #: 4

RE: WON'T GO OVER 45-50MPH!!!!!HELP - 4/14/2008 2:38:34 PM

Camdisco24

Posts: 724
Joined: 3/12/2007
Status: online

Very true spike, sometimes if I pull the shifter to fast it will say R but actaully be in N. All I have to do it put it back in park and pull it slower. Works everytime. But that may not even be your problem, but it does happen.

_____________________________

Cameron
2000 Disco II "Ruby" with 103k miles