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Big Russ

New Member

• Sep 14, 2011

• #1

Hi guys.......Hope someone can help me out here.....Never Posted till now but I am desperate.
I have a 1.8 petrol Freelander and guess what??????Failed its Emissions....So, new Lambda sensor, replaced the cat, heavy duty fuel system cleaner added......
Now its high revving in idle and revs very slow to come down....Have replaced the inlet manifold pressure sensor and no change....
Any ideas anyone before I torch it.......Heeeeeeeeeelp please....

 

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michaelstephenson

Member

• Sep 14, 2011

• #2

try the throttle housing,

 

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jailon

Active Member

• Sep 14, 2011

• #3

the wifes Fiat punto (FIAT - Fix It Again Tomorrow) had a faulty idle control valve, I replaced it and it was still the same till I read somewhere if I disconnected the battery for 30 mins it would reset itself and not use the previous settings....tried it and it worked.

Maybe worth a shot ???

 

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Big Russ

New Member

• Sep 14, 2011

• #4

Thanks very much for that....I will try it and see......Crossed fingers............

 

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Big Russ

New Member

• Sep 14, 2011

• #5

Ok..........so I disconected the battery for 30 mins and no improvement.......So Michael..........you mentioned the throttle housing........may I ask what about it.....is that the same as the throttle body.....do I need to replace it..........sorry, I am a paramedic so good with the body, not so good with cars....Thanks for your help......

 

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michaelstephenson

Member

• Sep 14, 2011

• #6

yeah the throttle housing (the bit on the end of the inlet manifold with the butterfly in it) they got updated with an alloy housing rather than plastic, i think the plastic ones warp slightly copy and paste this link for a picture of it: Elise S1 S2 Parts 52mm Alloy Throttle Body | Hangar 111 . i've known quite a lot of freelanders suffering the same problem as yours. hope this helps?

 

geordielad

Active Member

• Sep 14, 2011

• #7

my 1.8 petrol (now deaceased) was doing the same, changed TPS & it was fine good luck

 

Mantamad

New Member

• Sep 14, 2011

• #8

Very likely to be either a sticking throttle flap - the housing warps and makes it stick or a IACV (Idle air control valve) remove the IACV and give the plunger a clean and seeif this helps.

 

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Big Russ

New Member

• Sep 15, 2011

• #9

Hi Michael.....Thanks very much for that info......I have had a look and the throttle body on my car is aluminium......so maybe not the prob......thanks for input though....I appreciate it.......

 

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Big Russ

New Member

• Sep 15, 2011

• #10

Hi Mantamad..........thanks for that.....I have replaced the inlet manifold pressure sensor
and that seems to have cured it......thanks for your help.....