Is this a Speed Limiter or Limp Mode ? - Ford Fiesta Mk7 Forum - (2008-2017) -

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Is this a Speed Limiter or Limp Mode ?

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#1 0779mike


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  • Name:Michael Healy
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Posted 12 October 2020 - 11:12 AM

I am trying to sort out a 2013 1.5 Fiesta diesel van.  It accelerates well and drives perfectly up to 75 MPH. It will not go above 75 MPH though can achieve that speed in 4th or 5th gear (not tried 3rd).

This feels to me more like it has a speed limiter fitted or programmed into the ECM than going into limp mode.  75 MPH seems too fast for limp mode and presumably the revs are going higher in 4th gear than 5th and I think limp mode actually limts the RPM. 

It does have 2 stored DTC codes P2599 and P0299 - these may be old codes, I haven't  tried to clear them yet with my cheap ODB2 reader.

I have filled it with Shell Advanced Diesel and Wynns Turbo cleaner just as a start.

Any ideas before I sacrifice my credit card at the local Ford garage ?

Where are the good turbo specialists near me within in Redhill ?   



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Posted 13 October 2020 - 02:30 AM

Turbo boost issues. Sticking vanes if variable vane or a split boost pipe.


Check the boost pressure.

MK4.5 TDCI 140 Business Estate.



Adding your location may find someone local who could offer assistance.

F-Super, Bluetooth OBDII (ELM) and a MS509 scanners (test subjects required).

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#3 Mondygeek


    dont listen to me, you'll have horsepower and no money

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Posted 13 October 2020 - 03:21 PM

If its pulling fine upto 75 I'd say its a limiter, is it an eco-tech by any chance?

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