loss of power

Hi, I have fixed and checked about everything and part on engine and auto gearbox of 1999 Disco2 Td5. Head is done, injectors, turbo is fine at about 1.4 , auto gearbox overhauled, MIF , fuel regulator, fuel pump the lot ...

When I try to get out of my garage in the morning with a cool engine, a bit up hill I have to go into lower range to get her moving. Then as the engine is a bit warmer I can go better, but never full power. Somehow the power to accelerate is always a bit delayed. Top speed up hill about 60km/h max and straight 120km/h
When the engine is warm I get in and out of the garage no problem.
Anybody knows if something is slipping in the gearbox or why I have about 30% lack of power.
Been to Land Rover and their computer, they do not know. All comes up fine.
Does anybody have had similar experience or know the answer to my puzzle?

Uwe Jansch said:

Hi, I have fixed and checked about everything and part on engine and auto gearbox of 1999 Disco2 Td5. Head is done, injectors, turbo is fine at about 1.4 , auto gearbox overhauled, MIF , fuel regulator, fuel pump the lot ...

When I try to get out of my garage in the morning with a cool engine, a bit up hill I have to go into lower range to get her moving. Then as the engine is a bit warmer I can go better, but never full power. Somehow the power to accelerate is always a bit delayed. Top speed up hill about 60km/h max and straight 120km/h
When the engine is warm I get in and out of the garage no problem.
Anybody knows if something is slipping in the gearbox or why I have about 30% lack of power.
Been to Land Rover and their computer, they do not know. All comes up fine.
Does anybody have had similar experience or know the answer to my puzzle?

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Is it autobox or manual?

My previous TD5 auto was a bit like yours until I replaced the MAF and that improved it no end.

Just as an experiment, try running it without the airfilter in place and disconnect the MAF electrical connector. How does she run like that?

hi thanks its an auto box and i have replaced the MAF. But i am driving as if i was pulling a 3 ton trailer at all times.

Uwe Jansch said:

hi thanks its an auto box and i have replaced the MAF. But i am driving as if i was pulling a 3 ton trailer at all times.

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Hi there Uwe, don't know what you are used to driving but a TD5 auto is not a Ferrari?

I wonder if for some reason you are in "limp home" mode. This locks the transmission in 3rd gear, making it feel very sluggish.

Have you tried selecting first gear and seeing if there is any difference?


Dave

Uwe Jansch said:

Hi, I have fixed and checked about everything and part on engine and auto gearbox of 1999 Disco2 Td5. Head is done, injectors, turbo is fine at about 1.4 , auto gearbox overhauled, MIF , fuel regulator, fuel pump the lot ...

When I try to get out of my garage in the morning with a cool engine, a bit up hill I have to go into lower range to get her moving. Then as the engine is a bit warmer I can go better, but never full power. Somehow the power to accelerate is always a bit delayed. Top speed up hill about 60km/h max and straight 120km/h
When the engine is warm I get in and out of the garage no problem.
Anybody knows if something is slipping in the gearbox or why I have about 30% lack of power.
Been to Land Rover and their computer, they do not know. All comes up fine.
Does anybody have had similar experience or know the answer to my puzzle?

Click to expand...

Is it chipped? 1.4 sounds a bit high to me. I have a feeling that 1.2 bar is the max it can go to without going into limp mode. You could try lengthening your wastegate rod a touch. Be sure to count the number of turns in cae you need to reset it to what it was.

Hi, and thanks that sounds quite good. Limb mode? what is that and how can I get her out of it??

Uwe Jansch said:

Hi, and thanks that sounds quite good. Limb mode? what is that and how can I get her out of it??

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"Limp home" mode is a setting put in place by the ECU if it detects an anormal running condition which could risk damage, so it puts the car in the mode, to get you home - but the problem needs identifying and fixing.

The only real way of sorting this is to interrogate the electronic systems to identify what faults have been logged - then rectify them.


You could try a procedure known to help on occasions, but will not rectify the underlining fault.

Unlock the car using the remote, make sure you have your radio and EKA codes available, remove the battery negative lead and leave for 20mins - not shorter as the cars systems take a long time to shut down - then reconnect.

The test-drive the car. If it is ok, all well and good, but you still need to get it on a diagnostic machine to identify the faults - if it did actually go into "limp-mode" mode.

Cheers
Dave

Thanks again Dave, What seem to have happened is that a little pipe from under the big inlet pipe to the turbo had gone missing. I will take her for a test drive tomorrow. Wish me luck its been a very long search. Greetings Uwe

Uwe Jansch said:

Thanks again Dave, What seem to have happened is that a little pipe from under the big inlet pipe to the turbo had gone missing. I will take her for a test drive tomorrow. Wish me luck its been a very long search. Greetings Uwe

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Don't worry Uwe, we'll get it sorted out. If you have a digital camera perhaps you could post pictures - it helps to identify stuff.


Good luck

Dave

Uwe Jansch said:

Thanks again Dave, What seem to have happened is that a little pipe from under the big inlet pipe to the turbo had gone missing. I will take her for a test drive tomorrow. Wish me luck its been a very long search. Greetings Uwe

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Sounds like the vaccum pipe.

Hi Dave, Much better now, but still does not like to go uphill. ...some times. It is not an easily detectable fault. And then some times it stutters and jerks?. Sometimes 3000 rpm at 100 km/h, foot down but does not want to go faster. Tomorrow I will take her back to the gearbox repair place where the auto box and toque converter etc. was overhauled two weeks ago.
As I say, everything had been done at least once. I'll let you know. Thanks for trying to help.
When I want to drive off in the morning, I have to wait till she warms up. Revving yes but otherwise no power. That must point at something. And then sometimes she is quite sparkling and then later not at all. ??
Kind regards Uwe

vac hose gone?? thinks boost leak......limp mode.?

Uwe Jansch said:

Hi Dave, Much better now, but still does not like to go uphill. ...some times. It is not an easily detectable fault. And then some times it stutters and jerks?. Sometimes 3000 rpm at 100 km/h, foot down but does not want to go faster. Tomorrow I will take her back to the gearbox repair place where the auto box and toque converter etc. was overhauled two weeks ago.
As I say, everything had been done at least once. I'll let you know. Thanks for trying to help.
When I want to drive off in the morning, I have to wait till she warms up. Revving yes but otherwise no power. That must point at something. And then sometimes she is quite sparkling and then later not at all. ??
Kind regards Uwe

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Hi mate, I find first thing in the morning especially on cold days, the autobox on my car is slightly reluctant to take up drive, as was my previous TD5 auto. I find I just drive through it and she's ok.

On the subject of driving up hills is this before or after the TC (torque converter) has locked-up, about 90kph?


Can't remember if you have tried disconnecting the MAF (mass airflow meter) and evaluating the results?

Have you checked to see if you have oil in the red plug and socket on the ECU? Can't remember if you have had the live data read by a diagnostic machine?

It'll feel sooooooh good when you get this sorted

Cheers
Dave

Uwe Jansch said:

Hi Dave, Much better now, but still does not like to go uphill. ...some times. It is not an easily detectable fault. And then some times it stutters and jerks?. Sometimes 3000 rpm at 100 km/h, foot down but does not want to go faster. Tomorrow I will take her back to the gearbox repair place where the auto box and toque converter etc. was overhauled two weeks ago.
As I say, everything had been done at least once. I'll let you know. Thanks for trying to help.
When I want to drive off in the morning, I have to wait till she warms up. Revving yes but otherwise no power. That must point at something. And then sometimes she is quite sparkling and then later not at all. ??
Kind regards Uwe

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I've read the thread. I know that you've had you box and convertor serviced but I'm a simple bloke. Lack of go with an auto box especially when cold? Have you got enough fluid in there?

My money is still on turbo overboost.

ratty said:

My money is still on turbo overboost.

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yep. loose or holed vac hose to ecu.

Hi Dave, just to report back and let you know. That little pipe was gone again the next day. At a Landrover garage here L and R, I found a man Wyne, who actually knew what he was doing. He replaced a turbo pipe from the top to the bottem somehwere and now I can drive normally again. The power is back at least when the engine is warm. What will be tomorrow with a cold engine I am looking forward to find out.
Thank you for your support. Best wishes Uwe

Uwe Jansch said:

Hi Dave, just to report back and let you know. That little pipe was gone again the next day. At a Landrover garage here L and R, I found a man Wyne, who actually knew what he was doing. He replaced a turbo pipe from the top to the bottem somehwere and now I can drive normally again. The power is back at least when the engine is warm. What will be tomorrow with a cold engine I am looking forward to find out.
Thank you for your support. Best wishes Uwe

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That's great news Uwe, sounds like you've got it it sorted now.

Keep in touch

Dave