250 Engine splutters out once started

Mines started doing this, this week. Had a new stat fitted friday, and i regapped me plugs saturday. So im assumin its the plugs for me. Only doing it in the morning thou, after work is fine.

 

Did you search the forum? I seem to remember somebody having a similar issue where it turned out to be a small fuel pipe leak so the system would lose pressure overnight..

 

Mines remapped, and never stalled out once till the last few days

 

Mine does this but very rarely. What bothers me more is the almost missing firing on startup, for the first 20 seconds. Been told it's a trait of the f4rt engines.

 

"trait of the f4rt engines." i read that as "fart" engines.. coughs & splutters.. apologies.. toilet humour...

 

mine can stutter a little if i set off quickly after starting, can feel a bouncy.

Who uses the keycard slot! i thought they were all keyless entry / start

 

Mine did it last year before my battery died
Changed battery and hasnt done it since

 

Anyone found more out on this?

 

What fuel are you using?

These engines don't like cheap low octane fuel when cold. It does make the above symptoms worse.

 

I starting to think it some kind of temperature sensor issue, as with the hot weather this week, its been starting fine and even the kangerooing ive been having has gone and been driving fine from the get go.

 

Try priming the pump, so turns the ignition on with the keycard first and then start, see if makes a difference

 

It would be doin it all the time thou wouldnt it? Not when it it colder?

 

Last wednesday i changed my air inlet temperature sensor, so far, cold starts have been better and no cutting out. But its only been a week. But looking good so far.

 

The cars still running fine, so it must of been that sensor

 

What sensor are you referring to?

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Is it the one on the inlet manifold just before the throttle body

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On the 250 its in the intercooler pipe in front of the engine.

 

Oh ok almost similar setup, boost pressure sensor or map sensor

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Where did you get the sensor from? Mine has similar symptoms...

Turn it on after leaving it for a decent amount of time (usually the first time it has been started each day) and it revs at around 1200rpm

Settles down after a minute or so

If I go to accelerate it needs quite a bit of gas to prevent it spluttering

It's almost like it thinks it's colder than it is, and acts like a car that has the choke fully open

Is that the same issue as you've had?

 

Mine was doing this before I cleaned out the throttlebody, but mines a 225.

 

I managed to get a second rs monitor, and used it to check the air inlet temperature, as on super hot days it was starting sound. Anyway, on a colder morning (15c) i noticed the air inlet temperature was saying 20c, then when i got it started n it was spluttering, the less than arrow started flickering and then stop on. Bought a sensor of ebay, replace it. Its beem fine since.

 

Air inlet temperature sensor. Like this one below, it was a red one the 250.

 

Yip that one mines also red on the 225 but its on the air inlet pipe just before the throttle body

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Yeh i changed mine for a grey one off ebay, about £8ish. It aint done it since

 

I saw that mine is also grey but it looks worn out I just cleaned it out

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Cant see cleaning it making a difference, there wear through old age and heat, so they become slower reacting to temperature change, for the sake of £8 its worth changing.

 

Lol was just temp I can't leave that hole gaping now, can I?

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Temp solution

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its worth a go, I suppose, looks knackard now thou with the tabs snapped off, mine wouldn't budge either ended breaking it as twisting it out.

 

Anyone got a link to that part for an RS250?

 

Ebay no. 391043068236

 

Had exactly the same issue of and on for months then just before the initial post about this it was doing it every time I started it.swapped sensor like suggested and no more problems and no more fuel smell while stationary

 

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