Jump to content


Photo

What Causes This Sort Of Lack Of Power?


  • Please log in to reply
13 replies to this topic

#1 suddste

suddste

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 100 posts
  • Ford Model: Focus LX 1.6L 37,000 mls

Posted 27 March 2012 - 09:39 PM

Hi,

I've had this problem for a year now, all happened after a service where spark plugs, fuel filter and air filters were changed.

It's a petrol 1.6L ford focus thats done nearly 53,000miles. The computer was reset 2 times in the time ive had this problem, once full power did come back for a time, untill it slowly returned to having a lack of power (after about 2 weeks)

I've really no idea what it is. It starts fine, however a couple of hours after warming up it *sometimes* takes a while to catch and start. It seems sometimes it will get more power again (but not full) and after a couple days goes back to normal.

I've noticed that it's jerky when coming off the accelerator, and that it's hesitant, dont know if these are related as when the power returned after a computer reset, it was still jerky, however not as hesitant

Theres no codes, i've checked

Took it to fords a while ago and they said it appears fine on the test, they updated the software as well

any ideas?

Have something to contribute?

Sign in or register to start a topic...



Sign up to FOC Premium Membership To Remove These Ads

#2 artscot79

artscot79

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 7,892 posts
  • Name: arthur
  • Ford Model: focus mk2 ti-vct
  • Year: 2006
  • Location: Fife

Posted 28 March 2012 - 12:10 AM

ide have thought that since it happened after the fuel filter was changed that seems a likely culprit if it were me id have it changmdd

#3 STEADS

STEADS

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 1,108 posts
  • Name: NEIL
  • Ford Model: FOCUS 1.8 TDCI TITANIUM AND 2.0 TDCI
  • Year: 2009
  • Location: Cheshire

Posted 28 March 2012 - 09:28 AM

Agree with artscot fuel filters are directional theres a posibility its been fitted the wrong way sort of jobs they give to the apprentice and if there not aware simple mistake to make

#4 ukphillad

ukphillad

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 124 posts
  • Name: Phil
  • Ford Model: 1.4 Style
  • Year: 2008
  • Location: Dublin

Posted 28 March 2012 - 09:53 AM

Agree with the answers above! Fuel filter and Air filter are the usual main causes for the sluggish performance. If all your filters where changed, then maybe they weren't fitted properly although that's a very small possibility!! :wacko:
You may also want to make sure that you don't have a clogged fuel injector or a leak in the intake! Just throwing some ideas but it would be the best for the Ford chaps to scan your computer. :rolleyes:

#5 suddste

suddste

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 100 posts
  • Ford Model: Focus LX 1.6L 37,000 mls

Posted 28 March 2012 - 11:02 AM

surely it's not the fuel filter, though? After a reset it was good for a time, untill it eventually got worse? Sensor related?

Fords already scanned the computer and said nothing was wrong!

#6 STEADS

STEADS

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 1,108 posts
  • Name: NEIL
  • Ford Model: FOCUS 1.8 TDCI TITANIUM AND 2.0 TDCI
  • Year: 2009
  • Location: Cheshire

Posted 28 March 2012 - 11:07 AM

I,D JUST HAVE A QUICK LOOK YOURSELF IF THE FUEL FILTER IS ON WRONG THERE IS USUALLY AN ARROW ON IT IN THE DIRECTION OF FLOW NOT SURE WHERES ITS LOCATED IN THE ENGINE BAY OR UNDERNEATH THE CAR

#7 artscot79

artscot79

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 7,892 posts
  • Name: arthur
  • Ford Model: focus mk2 ti-vct
  • Year: 2006
  • Location: Fife

Posted 28 March 2012 - 12:49 PM

somewhere theres summat wrong if its a sensor it could be a temperature sensor to the engine which should show up on diagnostics but they will have to look at the live data not just check for dtc codes

#8 suddste

suddste

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 100 posts
  • Ford Model: Focus LX 1.6L 37,000 mls

Posted 28 March 2012 - 02:34 PM

somewhere theres summat wrong if its a sensor it could be a temperature sensor to the engine which should show up on diagnostics but they will have to look at the live data not just check for dtc codes


I have a device that can look at live data. What sort of thing do I look for?

#9 artscot79

artscot79

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 7,892 posts
  • Name: arthur
  • Ford Model: focus mk2 ti-vct
  • Year: 2006
  • Location: Fife

Posted 28 March 2012 - 03:00 PM

without knowing exact measurements its hard to tell you would need to look at the fueling as well as engine temp sensors and injector patterns etc hopefully someone on here with experience using the live data can advise better

#10 suddste

suddste

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 100 posts
  • Ford Model: Focus LX 1.6L 37,000 mls

Posted 28 March 2012 - 04:29 PM

without knowing exact measurements its hard to tell you would need to look at the fueling as well as engine temp sensors and injector patterns etc hopefully someone on here with experience using the live data can advise better


ah I cant get injector patterns. I just watch live data via the OBD2 port. In fact, here is a pic I took recently (I dont know if anythings wrong here):

Posted Image

#11 artscot79

artscot79

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 7,892 posts
  • Name: arthur
  • Ford Model: focus mk2 ti-vct
  • Year: 2006
  • Location: Fife

Posted 28 March 2012 - 05:10 PM

assuming that the car was at idle and the engine was warmed up fully the rpm is high at 804 it should be between 670-730 max if its at cold the idle is okay but the coolant temp is wrong the voltage again if cold is a bit low 14.4 to 14.5 with no load it doesnt show 02 sensor values so no idea if theres an issue there theres not enuf data u nd to be able to record the data while driving via laptop

#12 rokos

rokos

    Member

  • New Member
  • PipPip
  • 18 posts
  • Name: John
  • Ford Model: FOCUS MK2 TDCI 1.6 CVT
  • Year: 2006
  • Location: Other / Non-UK

Posted 28 March 2012 - 05:11 PM

try to test with a vacuum the turbo actuator
http://www.ebay.co.u...9#ht_2001wt_990
sorry i didnt saw that is gasoline...

#13 suddste

suddste

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 100 posts
  • Ford Model: Focus LX 1.6L 37,000 mls

Posted 28 March 2012 - 06:03 PM

assuming that the car was at idle and the engine was warmed up fully the rpm is high at 804 it should be between 670-730 max if its at cold the idle is okay but the coolant temp is wrong the voltage again if cold is a bit low 14.4 to 14.5 with no load it doesnt show 02 sensor values so no idea if theres an issue there theres not enuf data u nd to be able to record the data while driving via laptop


the car was at idle. It had been driven a lot thats why the coolant temperature is that high. I'll get the o2 readings later on and will record live data later. The voltage isnt wrong, thats the voltage for the OBD connector and not the alternators

#14 suddste

suddste

    Feet Under The Table

  • New Member
  • PipPipPipPip
  • 100 posts
  • Ford Model: Focus LX 1.6L 37,000 mls

Posted 29 March 2012 - 03:42 PM

Herre is the o2 volts readings, I dont know if these should be the right values or not

Posted Image

Have something to contribute?

Sign in or register to start a topic...


Not what you're looking for?

Register now, we have a huge community of enthusiasts to answer any questions you might have



0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users