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Failed MOT

taffy056
taffy056 Posts: 4,895 Forumite
On a number of points, but the main one was on emissions , I am driving a focus 1.6 2002 , and the test showed 0.501 when the pass rate was 0.300 or lower, now I am having a few problems with the car that seems to be known problems, I have been advised to change the speed sensor on the car as its running like a pig and the speedo is jumping up and down, do you think that will fix the problem?

The diagnostic light is on as well , and I have changed the lambda sensor, plugs ht leads and coil pack , plus the cat, but I am sure its all down to the speed sensor playing havoc with the car.

And if that is not enough I have put the wrong oil into the car 10w30 instead of 5w30 , would that have an effect on emissions ? The MOT guy said that petrol magic has been known to reduce them as well.

I am selling the car so don't want to spend more than I have too, so after a bit of advice.

Many thanks
Excel Parking, MET Parking, Combined Parking Solutions, VP Parking Solutions, ANPR PC Ltd, & Roxburghe Debt Collectors. What do they all have in common?
They are all or have been suspended from accessing the DVLA database for gross misconduct!
Do you really need to ask what kind of people run parking companies?

Comments

  • harveybobbles
    harveybobbles Posts: 8,973 Forumite
    Nine times out of then on Focus petrols its the lambda probe.
  • taffy056
    taffy056 Posts: 4,895 Forumite
    Nine times out of then on Focus petrols its the lambda probe.

    the thing is I have changed the sensor about 2 years ago, do they go so quickly?
    Excel Parking, MET Parking, Combined Parking Solutions, VP Parking Solutions, ANPR PC Ltd, & Roxburghe Debt Collectors. What do they all have in common?
    They are all or have been suspended from accessing the DVLA database for gross misconduct!
    Do you really need to ask what kind of people run parking companies?
  • anewman
    anewman Posts: 9,200 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker
    edited 22 June 2010 at 11:55AM
    If you got a cheapie one, or there's a problem with the car causing it to foul the sensor, then probably so. If you don't go for an OE one direct from Ford it's best to try get one of the brand used by Ford, so Bosch etc.

    The oil viscosity you used shouldn't affect the emissions, unless it hasn't been fully changed in ages. A new air filter (if it hasn't been changed in a while) and thrashing it before the MOT can also help.
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