Acceleration lag

Andrew McIntyre · Apr 17, 2010

Hi Folks.
I'm new to this forum so hello everybody

I've recently bought a Freelander TD4, and I love it, but one small thing is bugging me, so maybe you can help.
There seems to be a flat spot in early acceleration, most noticable in first gear, then it picks up and goes great. It's rather annoying, and any light shed on it would be much appreciated.
Cheers.
Andy.

rippedoff · Apr 18, 2010

Its called turbo lag. The turbo doesnt kick in until around 1800 revs. You should hear a wistle from the engine just as it kicks in. Thats when you get more power.

djewson · Apr 18, 2010

Hi there, mine did this last week on a run once the car was warm.
Kind of Hesitated when setting off.
have since fitted roverrons Synergy 2 and it hasn't done it since, he put it down to possible MAF degredation as I am now running the MAF compensator on the Synergy in LOW mode and it seems to be running fine, also the Extra power and torque that the Synergy 2 produces is nice too..
Definitely better than shelling out £200 for a new MAF..
google tuning diesels for Rons site
Dean

chromiumuk · Apr 19, 2010

rippedoff said:
Its called turbo lag. The turbo doesnt kick in until around 1800 revs. You should hear a wistle from the engine just as it kicks in. Thats when you get more power.

Don't think it's turbo lag, got to agree with djewson that it's probably MAF related. Try unplugging it & the engine wil run using ecu default values. If it improves things then you know you've got MAF issues.

p7rns · Apr 20, 2010

I seem to be having the same symtoms, however, the engine management like flickers occasionaly, do you think it could be the same issue ?

BigRog · Apr 20, 2010

p7rns said:
I seem to be having the same symtoms, however, the engine management like flickers occasionaly, do you think it could be the same issue ?

This could be an indication of a fuel pump problem, may be worth taking to the stealers and get a computer check done. Any codes shown will give you a idea what is going on.

Andrew McIntyre · Apr 29, 2010

Hi folks.
Thanks for that. I think it's the maf sensor, as the turbo seems to kick in on cue but it's below that where the dead spot is.
Cheers.
Andy.

chromiumuk · Apr 29, 2010

Have any of you tried to test run with your MAF disconnected, it's the standard test for this.

mudplug · Apr 12, 2013

Hi,just wondered if anyone has ever sorted this flat spot out,it would be nice to know the outcome of some of these problems,it seems everyone wants help then doesnt bother letting other peeps know how their problem was solved.

Acceleration lag

Andrew McIntyre

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rippedoff

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djewson

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chromiumuk

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p7rns

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BigRog

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Andrew McIntyre

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chromiumuk

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mudplug

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