Restricted performance Gear box fault

[Warrzone]

Some days i like my D2 better, yesterday was one of those days.

2010 D4 2.7 175,000km
has had gear box serivced approx 70k ago due again, but no issues

What happened
Yesterday while driving approx an hour on a 2 lane freeway cruising along at 100km
cruise control set, in D in 6th gear
40c day.
gear box and car working 100% fine, smooth shifts ect.
not towing, or any weight in the car.

I got the message, Restricted performance, gear box fault. twice.
stopped reset, drive again.

back to 100km for about 5 mins cruise on fault again.
reset drove with no cruise on left it in 5th no fault (i was nearly home) about 15 mins to go no more faults while driving around town.

I haven't scanned the car yet, I'm planning on getting a scan from a mechanic during the week.

my questions if an answer is possible with the above info and no scan.

What causes this type of fault?
in restricted mode it felt like the car had no drive, foot flat to the floor, and the car kept slowing down. i would be lucky to drive at 40km is that normal?
scale of 1-10 10 being a new 8k gearbox job how worried should i be?
would it be okay to keep driving?
is it more likely to be a sensor ect playing up?
is there anything i could check my self to narrow down the cause?

thank you everyone for you time.
Ben

[BradC]

What causes this type of fault?


Driving a Landrover.

There are loads of potential causes. In general a fault on the Engine ECU will alter the messages it sends out on the CAN bus and this causes the other downstream ECUs to register faults. So the chances of it being a transmission fault are very low. More likely something like an EGR, DPF, Turbo or it just happened to be Saturday and you held your mouth wrong.

Without reading codes pontificating about causes will be about as accurate as reading tea leaves.

i have found for engine faults, any generic OBD-II code reader will get codes, but you won't be able to grab from any other ECUs. A dedicated tool such as the Gap IID is pretty much essential with one of these complicated beasts.

[loanrangie]

I can't see your location from my phone but if you are in Melbourne I'm happy to plug my gap tool in.

[Warrzone]

thank you very much for the offer but I'm in the western suburbs of adelaide. But feeling the land rover community love all the same. thank you.

Anyone in Adelaide want a 6 pk of beer for a quick scan let me know. I will have to invest in one soon.

[justinc]

Almost certainly an overheat / overtemp issue brought about by towing in high ambient temp with cruise control...
These vehicles have lots of self protection, starting with fuelling reduction and aircon shut off to help cooling, engine and main vehicle faults from trans temps, overboost protection from over working it while in 6th gear in cruise control...only way to see is wait for scan tool results. GAPiid is a good start...

[DiscoJeffster]

Almost certainly an overheat / overtemp issue brought about by towing in high ambient temp with cruise control...
These vehicles have lots of self protection, starting with fuelling reduction and aircon shut off to help cooling, engine and main vehicle faults from trans temps, overboost protection from over working it while in 6th gear in cruise control...only way to see is wait for scan tool results. GAPiid is a good start...

Bit he wasn’t towing?

[Graeme]

Check the top I/C to throttle body hose for a split underneath.

[justinc]

Oops, brain fade.

[scarry]

Check the top I/C to throttle body hose for a split underneath.

Good call,

Just changed mine,it was shagged.

[Trevor Cock]

Have sent PM re IID tool.
Trevor

[Warrzone]

Trevor

thank you very much for the offer, but the car has thrown the code up again. so we will leave it be until it goes for a sleep over at Triump rover spares.

I will keep you posted as to what it is. Hopefully nothing too $$$$.

thanks again the land rover community.

[jonesy63]

Trevor

thank you very much for the offer, but the car has thrown the code up again. so we will leave it be until it goes for a sleep over at Triump rover spares.

I will keep you posted as to what it is. Hopefully nothing too $$$$.

thanks again the land rover community.

FWIW, I had a similar issue just after Christmas while towing in hot weather - through the Snowy Mountains. My issue was caused by the main battery. A few days on solar charge while camping and some long drives and it hasn't appeared since. (It is now 5 years old and I bet it will die now I've written this!) ;)

Cheers,
Rob

[p38brickus]

I have a Trans Fault thrown up on the dash of my 2008 TDV8 RRS. Some times it won't even start, the lights come on when I turn the key but nothing at all when it gets to the start bit. I've had a switch fitted under the bonnet which is direct to the starter motor. Car starts, runs, purrs like a kitten, just a bit of a pain to start sometimes.

[Wojer]

Some days i like my D2 better, yesterday was one of those days.

2010 D4 2.7 175,000km
has had gear box serivced approx 70k ago due again, but no issues

What happened
Yesterday while driving approx an hour on a 2 lane freeway cruising along at 100km
cruise control set, in D in 6th gear
40c day.
gear box and car working 100% fine, smooth shifts ect.
not towing, or any weight in the car.

I got the message, Restricted performance, gear box fault. twice.
stopped reset, drive again.

back to 100km for about 5 mins cruise on fault again.
reset drove with no cruise on left it in 5th no fault (i was nearly home) about 15 mins to go no more faults while driving around town.

I haven't scanned the car yet, I'm planning on getting a scan from a mechanic during the week.

my questions if an answer is possible with the above info and no scan.

What causes this type of fault?
in restricted mode it felt like the car had no drive, foot flat to the floor, and the car kept slowing down. i would be lucky to drive at 40km is that normal?
scale of 1-10 10 being a new 8k gearbox job how worried should i be?
would it be okay to keep driving?
is it more likely to be a sensor ect playing up?
is there anything i could check my self to narrow down the cause?

thank you everyone for you time.
Ben

I had the similar symtoms and it was caused by heat exchanger capillaries collapsing restricting oil flow. (See my previous posts)

It occured after approx 120 km and on hot (+35ºC) days even when not towing camper or van.

If used for towing especially over time, and in hot climate for longer distances, the temperature differentials together with pressure differentials, is the cause.
Did not replace heat exchanger, but installed an additional cooler.

[CanadianRyan]

Did not replace heat exchanger, but installed an additional cooler.

I'm interested in this. What cooler did you add and where did you put it? Cheers
Ryan

[fredd63]

Ah the dreaded restricted performance fault. I know it well, from my time with a 1999 Jaguar; it was the reason I got rid of it. It was always caused by minor problems, so I think you can rule out major gearbox problems, because the car performed normally after a restart. It will be some elusive electrical gremlin. If your vehicle is running a ZF 6 speed, there is a large electrical connection plug through the casing into the tranny. These tend to leak oil after a service, (sod's law). They are available for about $45 on ebay. Failing that, check all other electrical connections to do with the gearbox.

[DazzaTD5]

Oops, brain fade.

Yep yep... it happens when you are a indy Land Rover repairer [tonguewink]

[DazzaTD5]

All pointless speculation until codes are read.

[4bee]

Some days i like my D2 better, yesterday was one of those days.

2010 D4 2.7 175,000km
has had gear box serivced approx 70k ago due again, but no issues

What happened
Yesterday while driving approx an hour on a 2 lane freeway cruising along at 100km
cruise control set, in D in 6th gear
40c day.
gear box and car working 100% fine, smooth shifts ect.
not towing, or any weight in the car.

I got the message, Restricted performance, gear box fault. twice.
stopped reset, drive again.

back to 100km for about 5 mins cruise on fault again.
reset drove with no cruise on left it in 5th no fault (i was nearly home) about 15 mins to go no more faults while driving around town.

I haven't scanned the car yet, I'm planning on getting a scan from a mechanic during the week.

my questions if an answer is possible with the above info and no scan.

What causes this type of fault?
in restricted mode it felt like the car had no drive, foot flat to the floor, and the car kept slowing down. i would be lucky to drive at 40km is that normal?
scale of 1-10 10 being a new 8k gearbox job how worried should i be?
would it be okay to keep driving?
is it more likely to be a sensor ect playing up?
is there anything i could check my self to narrow down the cause?

thank you everyone for you time.
Ben

Q. Were you still on Cruise Control when this occurred? If so you may need to go down this path.

[Warrzone]

no its done it around town coming off a side street also

[BradC]

no its done it around town coming off a side street also


All pointless speculation until codes are read.


Codes. Need codes.

It's not ideal, however if you don't have access to a decent LR specific code reader, engine related codes can be read by most cheap/generic OBD-II code readers. I have a $10 ebay special I bought for my wifes Golf that worked on the D3 to diagnose a dead EGR valve. After that I bought a Gap to read the other 17 ECU's.

[wazmez]

Some days i like my D2 better, yesterday was one of those days.

2010 D4 2.7 175,000km
has had gear box serivced approx 70k ago due again, but no issues

What happened
Yesterday while driving approx an hour on a 2 lane freeway cruising along at 100km
cruise control set, in D in 6th gear
40c day.
gear box and car working 100% fine, smooth shifts ect.
not towing, or any weight in the car.

I got the message, Restricted performance, gear box fault. twice.
stopped reset, drive again.

back to 100km for about 5 mins cruise on fault again.
reset drove with no cruise on left it in 5th no fault (i was nearly home) about 15 mins to go no more faults while driving around town.

I haven't scanned the car yet, I'm planning on getting a scan from a mechanic during the week.

my questions if an answer is possible with the above info and no scan.

What causes this type of fault?
in restricted mode it felt like the car had no drive, foot flat to the floor, and the car kept slowing down. i would be lucky to drive at 40km is that normal?
scale of 1-10 10 being a new 8k gearbox job how worried should i be?
would it be okay to keep driving?
is it more likely to be a sensor ect playing up?
is there anything i could check my self to narrow down the cause?

thank you everyone for you time.
Ben
same trouble D3 for several years off and on. reset by turning ignition off and then restarting. Even rolling in nutral. Turned out to be low rail fuel pressure, faulty sensor in high pressure fuel pump. replaced pump Tickels Disco Automotive perth. All good now.

[Warrzone]

hey I have a Reader now!

I'm trying to get some codes from my cheap Ebay reader.

its sort of working.
first up i got P0000 fault. ( i think thats just related to it not connecting properly) Im using an iPhone and the ELM 327 wifi modual

While trying to read codes with the engine running my dash is now saying (emergency break assist not available) (stability control not avaliable) Im not sure if the ENGINE scanner is causing this as I've never seen it before.

The codes I've got are U0402(68) P2290(00) U0402(68) U2023(86) some of the codes may not be relevant to my car as they come up saying its for a BMW. the last code (U2023(86). A google search of the last one seems to D4 related.



Im not sure if my can tool is really helping.....

thanks again everyone

its booked in 2 weeks time.

[BradC]

P2290(00)

Bingo.

P2290 - Injector control pressure too low.

Welcome to the club. To quote Groucho Marx "I don't care to belong to any club that will have me as a member".

I guarantee by the end of this process you'll wish you weren't.

Do a couple of "clear & reproduce" cycles to be sure you get the same fault. You might also get a P0087 - Fuel pressure system/system pressure too low.

[DiscoJeffster]

Wow. These things are dropping like flies!

[BradC]

Wow. These things are dropping like flies!

Yep. I currently have 2 faulty pumps courtesy of Ean, plus mine (I ordered a new one today from United). So I'll have 3 pumps to strip to find out *what* is happening and hopefully *why*.
The guys at United indicated they see a *lot* of these, but only in Landrovers. I wonder if the Fords have better fuel filtration?

It turns out that both the PCV and VCV can be replaced. They just can't be replaced while the pump is in the car. I figure if I have to pull the pump out, I might as well put in a guaranteed replacement with a warranty.

[DiscoJeffster]

Must be a pain in the arse to change in the car.

[Eric SDV6SE]

Yep. I currently have 2 faulty pumps courtesy of Ean, plus mine (I ordered a new one today from United). So I'll have 3 pumps to strip to find out *what* is happening and hopefully *why*.
The guys at United indicated they see a *lot* of these, but only in Landrovers. I wonder if the Fords have better fuel filtration?

It turns out that both the PCV and VCV can be replaced. They just can't be replaced while the pump is in the car. I figure if I have to pull the pump out, I might as well put in a guaranteed replacement with a warranty.


Hi Brad, do you happen to have a km correlation for each HPFP PCV failure?

[BradC]

Hi Brad, do you happen to have a km correlation for each HPFP PCV failure?

I don't unfortunately. Ean might be able to give you a mileage on his, but mine is on a second hand engine of unknown origin. The third is a low mileage pump Ean purchased, but failed to work at all when installed in the vehicle.

[Warrzone]

far out doing a bit of googling, its not going to be cheap! and i only just did the Timing belts last service 2600 bucks later.

anyone keen to set it on fire for me, while I'm somewhere with an alibi.

sounds like 4K job the D2 is now my number one car!

[4bee]

anyone keen to set it on fire for me, while I'm somewhere with an alibi.


Don't despair, we've all had those thoughts as it's part of being a Land Rover Owner. [biggrin]

[kero]

far out doing a bit of googling, its not going to be cheap! and i only just did the Timing belts last service 2600 bucks later.

anyone keen to set it on fire for me, while I'm somewhere with an alibi.

sounds like 4K job the D2 is now my number one car!

Did you only do the belts,just had 182000 k service a bit over 2 grand

[PerthDisco]

far out doing a bit of googling, its not going to be cheap! and i only just did the Timing belts last service 2600 bucks later.

anyone keen to set it on fire for me, while I'm somewhere with an alibi.

sounds like 4K job the D2 is now my number one car!

As a matter of interest is the accessory belt changed at this time also? I’ve never seen the scheduled maintenance of this item discussed.

[BradC]

anyone keen to set it on fire for me, while I'm somewhere with an alibi.

I've said that more than once. Even my wife told me to "burn the sodding thing to the ground". If it wasn't so damn superb to drive when it actually runs, I'd have torched it by now.

[Warrzone]

Did you only do the belts,just had 182000 k service a bit over 2 grand

No had a service also, transfer case oil replaced, and the plastic T radiator part replaced for a alloy one.

TRS in adelaide did the belts, and extra pulleys ect people normally do while doing the timing belts

[Warrzone]

well its been confirmed the HPFP it is.

I took it to TRS and they checked it. they also found metal filings in the fuel tank from the pump which could have damaged the injectors if i had driven it around. i have read on here of people driving around for months with the faulty pump be careful i guess.

what sort of prices have others paid for their HPFP replacements?

for moneys sake I'm thinking of going for a low km 2nd one .

[4bee]

found metal filings in the fuel tank from the pump which could have damaged the injectors

You are aware that there is normally a filter between the pump & the fuel rail unless it has been removed & not replaced, but to do that it would need the fuel line to be bridged out in it's place?

[chw]

well its been confirmed the HPFP it is.

I took it to TRS and they checked it. they also found metal filings in the fuel tank from the pump which could have damaged the injectors if i had driven it around. i have read on here of people driving around for months with the faulty pump be careful i guess.

what sort of prices have others paid for their HPFP replacements?

for moneys sake I'm thinking of going for a low km 2nd one .


Hi Warrzone
We had the HPFP replaced, along with the timing belt/pump drive belts in at the end of Sept
2017 by PCB Independent Land Rover Specialists here in Adelaide - PCB Independent Landrover Specialists - Servicing, Repairs, Modifications & Spare Parts (http://www.pcblandrovers.com.au/)

Interestingly the lead-up was the same as yours, with a cascade of messages culminating in 'Gearbox fault ' and restricted performance.

The fault codes were the same as yours and it was diagnosed low fuel rail pressure.

After testing the LPFP it was considered that it was running within specifications and not replaced. The replacement of the HPFP and belts was a one day job (albeit being at the back of the motor it's a pain)

- HPFP - $2142
- Timing belt kit - $195
- labour (6.5 hours) - $926

Total - $3263

33,000 km later (now 160,000km) it's been trouble free, and no issues with the Low Pressure Fuel Pump.

Good luck
Craig

[4bee]

and it was diagnosed low fuel rail pressure

While the pump was within specs I do wonder whether it was really a semi-restricted Fuel Filter. [bighmmm]


Just sayin'.

[chw]

While the pump was within specs I do wonder whether it was really a semi-restricted Fuel Filter. [bighmmm]


Just sayin'.

You're right, in our case we think the issue was precipitated by a load of dirty fuel picked up along the Great Central Road, with the fuel filter subsequently changed (we cut it open and it was clogged with gunk) and tank drained in Alice Springs. That process didn't fix the cascading fault issues and in our case it was only resolved with the changing of the HPFP, having checked the flow rates through the LPFP.
Craig

[Wojer]

I'm interested in this. What cooler did you add and where did you put it? Cheers
Ryan

I had the whole issue diagnosed & rectified by a Transmission Specialist in Tuggerah NSW.
The engine cooling circuit was short circuited, and G'box circuit created.
The heat exchanger is a Ford Part (even the part number hasn't been changed!)

He was not a fan of the circuit design as he had seen the occurance of this issue before on a number of occassions, some with a complete destruction of the gearboxes.

Sorry I cannot help with specifics