Very slow pulling from stop freelander 1 2.0 TD4 2006

flanne101 · Wednesday at 11:07

Hi, my freelander is very slow pulling away from junctions, I just always thought it is a slow car but after googling 0-60 Realised it should be faster than my girlfriends car but it is miles slower.
I have just changed the Maf sensor and not noticed any difference but I also noticed a small box under the hood which after some googling is a synergy 2.
The switch labelled air was in the off position so I have now turned that on, and it seems to be more responsive on the pedal but I have not taken the car for a drive yet.
Could that switch being off be the cause of the slow car.
I have also bought a new pipe for the air temp sensor to replace that, I have had to buy a new plug because one of the wires broken off the sensor plug, so will solder that when it arrives.

Arctic2 · Wednesday at 11:12

What MAF did you purchase a genuine Bosch or a Pierburg MAF personally i would be removing that synergy because they make the High Pressure Fuel Pump fail earlier.

A Bosch MAF will not work properly with a synergy.

andyfreelandy · Wednesday at 11:22

Check inlet manifold and EGR for being clogged too.

I had one EGR that caused a dead spot as pulling away. Blanking the vacuum to it removed the problem.

flanne101 · Wednesday at 11:40

Arctic2 said:
What MAF did you purchase a genuine Bosch or a Pierburg MAF personally i would be removing that synergy because they make the High Pressure Fuel Pump fail earlier.

A Bosch MAF will not work properly with a synergy.

A cheap one from ebay not a genuine one. https://www.ebay.co.uk/itm/364184535320

hd3 · Wednesday at 12:17

some info re. the synergy module :

Wanted - SYNERGY 2 Fitting Guide

Hey all, I know there a loads of posts about the Synergy 2, i've read most of them, which, is why i managed to buy a second hand box from E-bay for £80. However, it doesn't have any instructions for fitting, can anyone help? Thanks,

www.landyzone.co.uk

...............

Arctic2 · Wednesday at 14:02

flanne101 said:
A cheap one from ebay not a genuine one. https://www.ebay.co.uk/itm/364184535320

That wont work with a synergy you need a Pierbug MAF, and even if you did not have a synergy it would not work, well it might for a while then it would fail, i would send it back.

BOSCH 0928400520 AIR MASS SENSOR MAF FITS LAND ROVER FREELANDER MG ZT ZT-T ROVER | eBay

MG MG ZT 2.0 CDTi Saloon Diesel 11/2002 05/2005 FWD 16 131 96. MG MG ZT 2.0 CDTi Saloon Diesel 06/2002 09/2003 FWD 16 116 85. MG MG ZT- T 2.0 CDTi Estate Diesel 11/2002 05/2005 FWD 16 131 96. MG MG ZT- T 2.0 CDTi Estate Diesel 06/2002 05/2005 FWD 16 116 85.

www.ebay.co.uk

The one you took off check inside to see if it's bosch or not.

A

Genuine original MAF.

1

2

3

4

Purchased the one above for a friend from ebay for £15 saying it came from working FL1 we will know once we fit it and hook up either the T4 or the Hawkeye diagnostic tool.

5

flanne101 · Wednesday at 17:21

The car is now pulling but all the grunt seems at low revs and if I floor the accelerator I get what I can only describe as a black smoke bomb from the back. It was on no 8 so I will try again later at no4 on the box.

Arctic2 · 2025-02-20T00:10:52+0000

flanne101 said:
The car is now pulling but all the grunt seems at low revs and if I floor the accelerator I get what I can only describe as a black smoke bomb from the back. It was on no 8 so I will try again later at no4 on the box.

Check all the intercooler hoses EGR hose etc for any splits the sign of puff of black smoke is a split hose, you could also try removing the synergy go back to stock and see how it runs then with the cheap MAF and or unplug the MAF once back to stock and see if it runs better.

flanne101 · 2025-02-20T15:10:50+0000

If I turn both switches off on the synergy is that the same as unpugging it .

Arctic2 · 2025-02-20T15:30:27+0000

flanne101 said:
If I turn both switches off on the synergy is that the same as unpugging it .

No with the Bosch MAF the synergy needs to be disconnected from the car wiring completely, then test to see how it runs with the MAF then unplugged see what the differences are.

As i stated in a post above the synergy will damaged the HPFP and that will be a bigger cost than the price of a synergy and a lot more work than just removing it from your FL1

flanne101 · 2025-02-20T17:26:51+0000

flanne101 said:
If I turn both switches off on the synergy is that the same as unpugging it .

Ok I just fitted a new air filter and un

Arctic2 said:
No with the Bosch MAF the synergy needs to be disconnected from the car wiring completely, then test to see how it runs with the MAF then unplugged see what the differences are.

As i stated in a post above the synergy will damaged the HPFP and that will be a bigger cost than the price of a synergy and a lot more work than just removing it from your FL1

unplugged the synergy and connected the maf and it was awful with no throttle response.I unplugged the maf and with the synergy 2 and the with the maf unplugged it is very responsive to the throttle and probably better than when it was connected with the synergy.
I wonder if the ebay maf is absolute garbage, it was only £20.
The back of the top cover on the air filter is not fitting very well with both screws at the back not biting, could this cause an issue with the maf connected Ie effect the air flow somehow.

Very slow pulling from stop freelander 1 2.0 TD4 2006

flanne101

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Arctic2

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andyfreelandy

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flanne101

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hd3

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Wanted - SYNERGY 2 Fitting Guide

Arctic2

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BOSCH 0928400520 AIR MASS SENSOR MAF FITS LAND ROVER FREELANDER MG ZT ZT-T ROVER | eBay

flanne101

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flanne101

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flanne101

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