Hi all,

Jumped in my 56 plate 2.7 HSE this morning and, whilst it was fine last night, I immediately noticed a lack of power when pulling off. I thought at first that my mat had got stuck under the accelerator so pulled over but it hadn't. It is like you are trying to accelerate but the gears arent engaged and then all of a sudden the power comes through. Once you are up to speed you cant notice it but when you slow down and stop at a junction you get the same problem again?

I dont drive quick and normally its only like my foot is resting on the accelerator to give me enough power to pull off. But not now!

Any ideas at all before I slit my wrists!

Thanks for any advice! Best Wishes

Gary

I bet some fresh spark plugs & maybe a new coil pack would sort it.
When was it last in for a service?

0cj0 wrote:

I bet some fresh spark plugs & maybe a new coil pack would sort it.
When was it last in for a service?

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It had its second service about 4 months ago? Best Wishes

Gary

Clogged up fuel filter is a possible answer but all these sort of problems seem to revolve around the EGR valves. 2005 Zambezi TDV6 - Gone but not forgotten
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Last edited by Very Annoyed on Fri Sep 24 2010 2:35pm. Edited 1 time in total

It had its second service about 4 months ago? Best Wishes

Gary

Very Annoyed wrote:

Clogged up fuel filter is a possible answer but all these sort of problems seem to revolve around the EGR valves.

0cj0 wrote:

I bet some fresh spark plugs & maybe a new coil pack would sort it.
When was it last in for a service?

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Quote:

A possibly related service bulletin (NASF TSB #LTB00041, Rev 2) entitled "Reduced Power Under Load" appeared, affecting the supercharged versions of the L322/LM and Range Rover Sport/LS Sport vin numbers 6A901924 to 7A109767) The symptom was described as reduced power and or a misfire at high engine loads and road speeds, with the possibility of Diagnostic Trouble Codes (DTC) P0096 and/or P2601 stored. The source of the problem was described as follows: "The electrical harness power supply and ground for the auxiliary coolant pump may be cross connected in connector C3006. The pump will run backwards causing the Engine Control Module (ECM) to reduce power to prevent damage because the pump flow is low. The auxiliary coolant pump will be degraded under these conditions.
Action: Should a customer express concern, modify the wiring at connector C3006 to the correct positions:
• Cavity 1 connected to "-" pump connection Black (B) Brown (N)
• Cavity 2 connected to "+" pump connection Brown / Purple (NP) Red / White (RW)
Install a new supercharger coolant pump as part of the repair if either the fault codes or the incorrect wiring is discovered following the repair."
Update January 2010: Owners continue to experience this problem. Peter White reports his recent experience with his Range Rover Sport Supercharged HST (late 2006 model): "Engine fault warning when accelerating/overtaking on motorway. Happened 3 times in one month. Immediate power loss to limp home mode – very dangerous! Temporarily solved by stopping the vehicle, turning off and removing the key. Dealer suggested software upgrade but later suggested both a software upgrade and replacement supercharger coolant pump and associated wiring following a diagnostic check."

If you experience this problem or know more about the solution please email me.

chris mc wrote:

Quote:

The symptom was described as reduced power and or a misfire at high engine loads and road speeds

Is it possible your car could have developed this, i know it is not S/C but still makes interesting reading.

If you had sludge in your tank then yes it could be a problem - do you use cheap supermarket diesel? 2005 Zambezi TDV6 - Gone but not forgotten
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Very Annoyed wrote:

If you had sludge in your tank then yes it could be a problem - do you use cheap supermarket diesel?

Very Annoyed wrote:

If you had sludge in your tank then yes it could be a problem - do you use cheap supermarket diesel?

Unfortunately yes - morrisons the culprit this time  Best Wishes

Gary

0cj0 wrote:

I bet some fresh spark plugs & maybe a new coil pack would sort it.
When was it last in for a service?