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Focus 1.8Tdci (57 Reg) Slow Throttle Response


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#16 johnH

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Posted 11 February 2011 - 10:54 PM

i read this on a site "A couple of sites listed this: 5750 Accelerator Position Sensor Out of Range" so i would suppose that removing it would bring this up...wait a few days and see if it goes away...obv it will be logged for later, but wont be on dash

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#17 FordFocus1.8tdci

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Posted 11 February 2011 - 11:02 PM

i read this on a site "A couple of sites listed this: 5750 Accelerator Position Sensor Out of Range" so i would suppose that removing it would bring this up...wait a few days and see if it goes away...obv it will be logged for later, but wont be on dash

Cheers John, thanks!

#18 APJ

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Posted 12 February 2011 - 02:22 PM

Hello there, Im having the exact same problem as you.....firstly i thought it was because id filled up with some normal diesel instead of the usual Shell V-power diesel. But it happened again today. It can go for quite long periods were its fine.....for example it hadnt happened for about 3 weeks then all of a sudden it happened today (has happened about 6 times in just over a month). I find that switching the engine off and re-starting does the trick.....and also if i put it in neutral and just keep my foot down on the accelerator once the revs finally reach around the 3000rpm mark it kind of corrects itself and is then ok.

So is this a potentiometer and/or fuel filter issue? i also get no warning lights or error codes. I dont believe its the EGR valve cos theres no smoke. Also it does not cut out whilst driving like Jeebowhite's did, so does this indicate its prob not a fuel filter issue but something to do with throttle sensor/potentiometer?

#19 FordFocus1.8tdci

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Posted 12 February 2011 - 04:14 PM

Hello there, Im having the exact same problem as you.....firstly i thought it was because id filled up with some normal diesel instead of the usual Shell V-power diesel. But it happened again today. It can go for quite long periods were its fine.....for example it hadnt happened for about 3 weeks then all of a sudden it happened today (has happened about 6 times in just over a month). I find that switching the engine off and re-starting does the trick.....and also if i put it in neutral and just keep my foot down on the accelerator once the revs finally reach around the 3000rpm mark it kind of corrects itself and is then ok.

So is this a potentiometer and/or fuel filter issue? i also get no warning lights or error codes. I dont believe its the EGR valve cos theres no smoke. Also it does not cut out whilst driving like Jeebowhite's did, so does this indicate its prob not a fuel filter issue but something to do with throttle sensor/potentiometer?

Hi APJ, Well what I can tell you is that so far my car hasn't done it since I dismantled the pedal potentiometer and cleaned it as I have explained in one of my previous posts. Mine didn't give any warning lights or error codes before either, but on the other hand mine didn't correct itself after I revved it up to 4000rpm. What I can suggest is that you have a go by cleaning the pedal potentiometer first and see what happens, it's not a difficult job to do apart from the awkward task of unbolting/bolting the 3 nuts that secure the pedal. Good luck!

#20 APJ

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Posted 13 February 2011 - 05:52 PM

Ok, glad to hear your car is so far ok since you cleaned the pedal potentiometer...i might well try and give it a clean myself altho im not particularly mechanically minded and would probably struggle. Im having the CAM belt changed in a couple of weeks at my local Ford garage, so might just mention it to them and see what they say. Maybe they'd be able to have a look at the pedal potentiometer.

#21 FordFocus1.8tdci

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Posted 13 February 2011 - 09:35 PM

Ok, glad to hear your car is so far ok since you cleaned the pedal potentiometer...i might well try and give it a clean myself altho im not particularly mechanically minded and would probably struggle. Im having the CAM belt changed in a couple of weeks at my local Ford garage, so might just mention it to them and see what they say. Maybe they'd be able to have a look at the pedal potentiometer.

Very well, but I can assure you that it's not a difficult task to do, and most probably the folks at the Ford garage won't bother to dismantle the pedal pot themselves, they might say that it's not a servicable part and suggest that you replace it with a new one. If so I would suggest you have go before commiting yourself to change the part, there's no harm in trying. Whatever the outcome I'd appreciate if you keep me informed. Thanks!

#22 FordFocus1.8tdci

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Posted 20 February 2011 - 11:47 AM

Just to keep all those interested in this matter up to date, the problem has not occured again since I've cleaned the throttle potentiometer.

#23 APJ

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Posted 20 February 2011 - 10:11 PM

im still having the same problem with mine.....seems like from reading various posts this type of loss of power is either
1. Sticky ERG valve
2. Dodgy throttle potentiometer sensor
3. Clogged Fuel Filter
4. Dodgy Camshaft Position Sensor

Today i experienced the loss of power in 2nd gear (this is the first time ive experienced it in 2nd gear, ususally happens in 1st as i go to pull away). I just need it to get through one more week..then its in to the local Ford garage for its CAM belt change. I will tell them about the issues ive been having and see what they say

#24 H3lly

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Posted 21 February 2011 - 12:28 AM

Where is this throttle potentiometer sensor located? I was going to change my fuel filter and clean the trottle body too. Mine doesn't have the same symptoms but can be a bit sluggish when cold. It's mainly part of my preventative maintenance list of things to do. :)

#25 APJ

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Posted 21 February 2011 - 09:36 AM

does anyone know how much it would cost to get Ford to stick a new fuel filter in for me? wondering if i should get them to do that as their gona be putting a new CAM belt on anyway.

H3lly im not exactly sure where the Throttle Potentionmeter is located but i found this guide which might be helpful

http://myfordfocus.com/how-to/65mm.htm

#26 jeebowhite

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Posted 21 February 2011 - 12:09 PM

When my fuel filter went kaput! they charged me a 60 diagnostics fee, the total bill was about 155 - 60 diagnostics fee, I would say your looking at about 80...

Replacing the fuel filter I have heard is fairly easy, I havent done it though...

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