Help!!

[Bassman85]

Just had my engine light come on and it won't rev over 2.5k!! And when I turn ignition off it takes a few seconds to stop!! Urgently need help. Anyone got any idea what it is? I've tried unplugging the MAF and makes no difference.

[Midnightclub]

Sounds like it's in limp mode

[Bassman85]

Sounds like it's in limp mode

It definitely does, just wondering if people have any idea what I can check? Running on for a second or two after ignition is off, is that normal for limp mode or does it point to something more? Turbo oil seals?

[Toms306]

Fuel pressure reg maybe...

Oil seals wont put it into limp mode.

[Midnightclub]

I recall people mentioning the brown relay behind the ECU in the past but honestly can't remember off the top of my head. Sure someone else will pop up soon enough with some more help

Plugging it in to some form of diags' should help though

[shervo]

If its running on after ignition turned off then 99% sure its a fuel pressure problem, try cleaning the regulator.

[Ruan]

Possible connection problem with the FPR - usually the thing to chuck it in limp mode.

[Bassman85]

I recall people mentioning the brown relay behind the ECU in the past but honestly can't remember off the top of my head. Sure someone else will pop up soon enough with some more help

Plugging it in to some form of diags' should help though

If its running on after ignition turned off then 99% sure its a fuel pressure problem, try cleaning the regulator.

Possible connection problem with the FPR - usually the thing to chuck it in limp mode.

Cheers for the quick replies guys dumb question, I haven't for a Haynes so where is the FPR located?

[Poodle]

It'll be making too much fuel pressure because the fpr is blocked or not opening properly, hence limp mode and running on. Default position for the fpr is open, for obvious safety reasons, so if it's got connection problems it just wouldn't run.

[powerandtorque]

Cheers for the quick replies guys dumb question, I haven't for a Haynes so where is the FPR located?

FPR is on the gearbox side of the high pressure pump, held in by awkwardly located T30 (IIRC) torx bolts made of cheese.

[shervo]

As said, held in with 2 T30 torx bits, move the filter housing out the way so you can hold the bit straight to prevent rounding the bolts.

[Bassman85]

Thanks again guys, pretty sure it's the FPR but my tool collection is rubbish so I can't get it off gonna take it to my mates garage tomorrow

[JTaylor2005]

Does the fuel pressure regulator need any sorts of washers when refitting it? Gotta do my fuel filter soon so may as well clean the fpr on mine at the same time.

[pro_steve]

100% the fuel pressure regulator. Or maybe 99%, but very likely.

[Bassman85]

100% the fuel pressure regulator. Or maybe 99%, but very likely.

Cheers steve hope to get it sorted tomorrow or over the weekend

[Poodle]

Jtaylor, if there's nothing wrong with it leave it alone, if you take it out you risk causing problems. In answer to your question; it just has an o-ring or a gasket fitted, depending on what year it is. As far as i can tell you can't get replacements, so just reuse the old one.

[Paul_13]

FPR
had this problem myself

And yes be careful undoing the bolts they are made of cheese and I guarantee you'll drop one of the bolts and you won't find it

[shervo]

Pretty sure you can get replacement gasket/o rings from peugeot, but most motor factors will have a box of o rings, just find two that fit.

[Paul_13]

There's 2 types of FPR I've found
1 has a flat gasket on
the other has an o ring

[Poodle]

Guess my local dealer just couldn't be arsed to look properly then lol, nothing new.

[shervo]

Guess my local dealer just couldn't be arsed to look properly then lol, nothing new.

Doesn't surprise me tbh, I phoned my local dealer up for some power steering fluid and asked when they recommend to change it and all they said was 'any old power steering fluid will do and we dont know when your meant to change it'.

[Bassman85]

Is it alright to drive it in limp mode with a bad FPR as the garage is a 20 minute drive

[shervo]

I dont see it causing any problems as limp mode is pretty much a safety get you home mode. Someone will confirm that though.

[Paul_13]

I've driven some distance in limp mode. Hasn't done me any damage

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Have you got a cheapy obd reader? Clear the fault it might go

[Bassman85]

I've driven some distance in limp mode. Hasn't done me any damage

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Have you got a cheapy obd reader? Clear the fault it might go

I haven't got an obd reader. Anyway of reseting the light manually? battery of for a while?

[Bassman85]

Can someone post a link to a suitable obd on eBay because all the cheap ones I've found say diesels from 2004?
Is there a way to turn light off with obd? I know on my 2003 Ford Focus I could disconnect the battery

[Paul_13]

Disconnect the battery for 45 mins, might snap it back to

[pro_steve]

Sometimes it goes out if you restart the engine about 10 times.

[Poodle]

It'll go out after five restarts IF the problem is fixed. It's perfectly safe to drive in limp mode, the whole point of limp mode is to restrict it's operational range to prevent further damage to anything.

[madmadmax]

i have got lexia if you need to have it put on one

i am in sheffield