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2006-2009 Range Rover Sport
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17 Posts
Discussion Starter #1
Hi there,

The issues with my RRS 4.4 V8 continues.

The first symptoms were loss of power, rough idling and very high fuel consumption. Codes P0137, P0157, P0172, P0175, i.e. O2 sensors messing up. All those were replaced but same codes still appearing. Compression test done indicating low compression on one cylinder.

I asked my mechanic to put the car back together. He replaced a number of gaskets, including the head gasket. Problem remains and now there's also white smoke at hard acceleration, which wasn't there before. The garage now recommends the only solution may be to simply replace the engine. Labour is cheap in Kenya so the primary cost would be the cost for the replacement engine, if one can be found.

I'd be keen to hear your thoughts if indeed the battle with this engine is lost. These issues appeared quite suddenly about four months back after a regular service so I'm completely at a loss.
 

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2006-2009 Range Rover Sport
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863 Posts
Nasty story. Kind of sounds like the work they performed made matters worse. Also interesting that the problem started after a normal service. Not sure but I believe that I read on this forum not too long ago that someone replaced the engine with one from a Jaguar and only had to change over a couple of things. I think you need to get a second opinion.

PS; try googling the codes.
 

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2006-2009 Range Rover Sport
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17 Posts
Discussion Starter #3
Nasty story. Kind of sounds like the work they performed made matters worse. Also interesting that the problem started after a normal service. Not sure but I believe that I read on this forum not too long ago that someone replaced the engine with one from a Jaguar and only had to change over a couple of things. I think you need to get a second opinion.

PS; try googling the codes.
Indeed! And this is the Kenyan offshoot of one of UK's most renowned Land Rover specialists. We have plenty of really good mechanics here in Kenya but most are not that good on more modern cars. For my RRC, however, there is never any problem getting things sorted and finding parts. We have an astonishing number of old Rovers on the roads here.

On the RRS there is still a lack of power and hesitation at hard acceleration. Started the vehicle this morning and the smoke was not there and no problem starting it. Engine idling fine now but there is still a loss of power and some hesitation at acceleration.

The codes indicate fuel mixture too rich. The mechanic explained this that the engine is burning oil and that's what throwing the codes. Could that be the valve cover gaskets? Supposedly those were replaced. The concern is the low compression on one cylinder. But it seems to me to be a pretty drastic solution to just simply replace the whole engine!
 

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2006-2009 Range Rover Sport
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17 Posts
Discussion Starter #4
Here's another thought: Before these problems started I had a guy update the ECU software in the car. Could all these issues simply be a result of a faulty ECU messing up the running of the engine?
 

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2006-2009 Range Rover Sport
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863 Posts
Here's another thought: Before these problems started I had a guy update the ECU software in the car. Could all these issues simply be a result of a faulty ECU messing up the running of the engine?
Indeed! And this is the Kenyan offshoot of one of UK's most renowned Land Rover specialists. We have plenty of really good mechanics here in Kenya but most are not that good on more modern cars. For my RRC, however, there is never any problem getting things sorted and finding parts. We have an astonishing number of old Rovers on the roads here.

On the RRS there is still a lack of power and hesitation at hard acceleration. Started the vehicle this morning and the smoke was not there and no problem starting it. Engine idling fine now but there is still a loss of power and some hesitation at acceleration.

The codes indicate fuel mixture too rich. The mechanic explained this that the engine is burning oil and that's what throwing the codes. Could that be the valve cover gaskets? Supposedly those were replaced. The concern is the low compression on one cylinder. But it seems to me to be a pretty drastic solution to just simply replace the whole engine!
I guess it depends on how low the compression is on the one cylinder . I don't think that a weak cylinder would cause much hesitation. Overall power would certainly be affected but hesitation sounds more a general problem.
 

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2006-2009 Range Rover Sport
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17 Posts
Discussion Starter #6
I guess it depends on how low the compression is on the one cylinder . I don't think that a weak cylinder would cause much hesitation. Overall power would certainly be affected but hesitation sounds more a general problem.
Can't recall the exact number now, but it was off by less than 10% relative to the other seven cylinders.
 
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