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Fuel consumption issues

Tiny
DIPS_MUFC
  • MEMBER
  • 2005 FORD MONDEO
  • 60,000 MILES
Hi

I have a ford monder, 05 plate and have seen some issues:

1. High fuel consumption
2. Rattle in Engine after the car starts, appears to be a timing issue as it is frequent
3. At the highest point, the accelerator makes the car judder even while driving
4. Clutch seems to be on its way out.

Can these all be linked? I used to get 650 mp tank and now I am lucky to get 450-500. Any help will be appreciated.

thanks
Dee
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Thursday, September 13th, 2012 AT 4:21 PM

7 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
If the clutch is slipping, it would affect fuel consumption. The juddering could mean misfirings so it affects engine performance and would be another major contribution so you need to get them checked.

We can't help much with noises as it is not possible to understand what it is and the source of it.

If the Malfunction Indicator Light is shsowing, get the trouble codes retrieved.
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Thursday, September 13th, 2012 AT 5:56 PM
Tiny
DIPS_MUFC
  • MEMBER
  • 4 POSTS
I have checked the injectors and they seem fine so not sure if they are misfiring but will check the clutch for sure. Can the clutch cause a drop from 650miles per full tank down to 400?

I know it was on its way out at the last service. I will get this checked out and update. Thanks for the feedback.
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Friday, September 14th, 2012 AT 9:55 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
If the clutch fails completely you risk getting nowhere. When it is slipping, the engine is racing with no load being transmitted to the drive trains, definitely it can cause a huge increase in the consumption.

This coupled with the engine not working correctly can make a lot of difference.

I need the trouble codes to understand what is really wrong.
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Friday, September 14th, 2012 AT 11:04 AM
Tiny
DIPS_MUFC
  • MEMBER
  • 4 POSTS
That is the worst part. There are no error codes. I have plugged in a generic machine and am taking this to Ford to see if they can get any codes for me. I will update the post then.

Thanks again
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Friday, September 14th, 2012 AT 12:01 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Which engine do you have?
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Friday, September 14th, 2012 AT 1:29 PM
Tiny
DIPS_MUFC
  • MEMBER
  • 4 POSTS
2.0l TDCi 115cc
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Friday, September 14th, 2012 AT 1:33 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Diesel engines are not easy to check for noises. Your mileage is still rather low therefore mechanically there shouldn't any problem.

Why did you think your clutch is failing at this mileage?
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Friday, September 14th, 2012 AT 5:33 PM

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