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Stuttering When Accelerating In 2Nd And 3Rd Gear


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#1 beethoven

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Posted 12 May 2013 - 09:24 AM

That's my problem for the moment :(

Tought about the MAF sensor,but I have  disconnected the MAF sensor , no change.

Now I'm thinking that the clutch is the culprit, however....

if I switch and then accelerate, it is present between 2000 and 3000 rpm.

if I just keep driving after the switch and then I accelerate, it is not present, then it is as if nothing is wrong.

Advice??????



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#2 stooge75

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Posted 12 May 2013 - 10:53 AM

after what switch mate? this probably wont get posted soon enough cos im on moderators queue for swearing



#3 mintalkin

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Posted 12 May 2013 - 06:21 PM

are you getting more black smoke that usual from the exhaust? if so check the intercooler pipe from the bottom of the egr valve, if its split it can cause black smoke and a judder around the 2000rpm mark.



#4 beethoven

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Posted 12 May 2013 - 08:21 PM

Hi, black smoke is not present during acceleration, only by switching a little "plf".

EGR is blocked, so, no exhaust intake.

What I've noticed is that the valve on the outside is rather "dusty".

Perhaps, the tube is still torned somewhere, anyway?

Just in case, I've bought a set of silicone turbo tubes: turbo to  IC , IC to EGR



#5 beethoven

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Posted 13 May 2013 - 04:01 AM

after what switch mate? this probably wont get posted soon enough cos im on moderators queue for swearing

Changing gear........(sorry), what's the expression in the English language?



#6 FOCA

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Posted 13 May 2013 - 04:25 AM

There is a possibility that the DMF is on its way out, which can affect the crank position sensor cleaning out any matal swarf can help. there is also a cam position sensor,  

 

Have you read the codes/ do you have a code reader?



#7 beethoven

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Posted 13 May 2013 - 04:33 AM

There is a possibility that the DMF is on its way out, which can affect the crank position sensor cleaning out any matal swarf can help. there is also a cam position sensor,  

 

Have you read the codes/ do you have a code reader?

Yes I have....The only code he shows is related to the EGR circuit....( less flow), because EGR = blocked

DTS codes ( in the dash ) also nada, zippo.....



#8 stooge75

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Posted 13 May 2013 - 01:31 PM

think once you put new 'tubes' on it will be ok



#9 beethoven

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Posted 15 May 2013 - 05:38 AM

think once you put new 'tubes' on it will be ok

I hope so....



#10 Zachayter

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Posted 14 September 2013 - 09:40 AM

Taken from my thread on this:

 

<<<<<<<<<<<<<<<<<<<<<<< UPDATE >>>>>>>>>>>>>>>>>>>>>>>>>
<<<<<<<<<<<<<<<<<<<<<<< UPDATE >>>>>>>>>>>>>>>>>>>>>>>>>
<<<<<<<<<<<<<<<<<<<<<<< UPDATE >>>>>>>>>>>>>>>>>>>>>>>>>
 
I purchased a cheap throttle position sensor from ebay for £15 (genuine part normally costs £70), fitted it and didn't solve the problem, so moving on.
 
After some research this is what I have found with regards to the stuttering/fuel starvation/misfiring :::
 
ecutesting.com :::
This common fault of misfire on two cylinders or complete non start is often caused by the ignition coil pack shorting out on the vehicle - it is very important that the ignition coil pack is replaced at the same time as refitting your ECU after it has been repaired - or your faulty coil pack may damage the repaired ECU. - http://www.ecutestin...u_misfire_.html
 
EXCELLENT thread from RAC.co.uk on this topic :::
Lots of detail into this very common Focus MK1 98-04 fault here: 
 
How I think the problem occurred :::
I believe that when the speed sensor started malfunctioning I continued to drive the car, which may have caused the faulty speed sensor to damage the Ignition Coil Pack which then damaged the ECU.
 
How I'm going to tackle it now :::
Take out the ECU, read it's part number and send the ECU off for repair/replacement by ecutesting.com for (hopefully) £150.
Purchase new ignition coil pack for £25.
 
Will let you know how it goes   :)
 
z


#11 beethoven

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Posted 14 September 2013 - 12:06 PM

Problem solved.

 

Remapped the ECU... ;)



#12 stooge75

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Posted 14 September 2013 - 12:48 PM

remapped it or reflashed it?



#13 beethoven

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Posted 14 September 2013 - 03:00 PM

simply a remap (OBD) -_-



#14 stooge75

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Posted 14 September 2013 - 06:40 PM

it'll probably happen again(but hope not for your sake) I had a corrupt pcm before & I did the same nearly. But as I wasnt finding the underlying problem that caused it,it came back within a few weeks. I never ever found out what caused it but an auto-sparky reckons water ingress(glorious ford again). here's hoping though eh lol



#15 FOCA

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Posted 14 September 2013 - 07:26 PM

Problem solved.

 

Remapped the ECU... ;)

Exellent - now you get to drive your brilliant Mondeo :)



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