Kagaroo @ 2000 rpm

Questions specifically about a Petrol powered Citroen C3 (usually engine or fuel related problems).
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Petrol engine related faults, like injectors, error codes, overheating.
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My Name: davidanderson

Member
Posts: 1
Joined: Tue Mar 10, 2015 8:32 am
Model: C3 2002-2005, Original shape model
Year: 2007 (07)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 50000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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C3 Pluriel 1.4 engine code tu3jp mileage 47500

Hi guys, this car will not accelerate over around 2000 rpm and then it "loses the plot". no diagnostic codes present or engine management light! driving it, it feels like the MAP sensor is faulty but that has been replaced along with the crankshaft sensor. does any one know what i should be seeing on " live data" in respect of MAP sensor reading? For example, at idle, data suggests 640mb @ 800 rpm though my scanner shows a reference of 1306mb.

I understand that I should have two throttle track readings and would expect them to be similar. There is no reading at all from track one??

Are there common issues with the ECU that could account for this? Why no fault codes at all? mechanically, there seems nothing wrong, no obvious vacuum leaks, runs perfectly at idle. only under load does it play up.

Thoughts?
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My Name: Arfur Dent

Guru
Posts: 3303
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 258 times
Been thanked: 111 times

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Hello davidanderson, welcome to the forum
davidanderson wrote: it feels like the MAP sensor is faulty but that has been replaced along with the crankshaft sensor.
I may be able to get some live data from a Petrol C3, I will report back if I can find a suitable petrol C3 near by ;)
davidanderson wrote:I understand that I should have two throttle track readings and would expect them to be similar.
I think they are an inverse of each other, or something similar. The ECU will read both values and give out a reading. You will definitely get an P code error if the 2 throttle pedal tracks don't correspond.
davidanderson wrote:Why no fault codes at all?
Its a mystery and very unusual for a car that has problems, hey even cars that run well can have codes stored. I would recommend the use of lexia clone tool when it comes to reading codes on the C3 ;)
davidanderson wrote:only under load does it play up.
When the engine is trying its hardest and using the most fuel and air - Coil Packs, plugs, fuel filter and air filter - all ok?
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User avatar
My Name: Arfur Dent

Guru
Posts: 3303
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 258 times
Been thanked: 111 times

Post

I may be able to get some live data from a Petrol C3, I will report back if I can find a suitable petrol C3 near by ;)

Engine idling manifold pressure.

I started the engine which has been previously run an hour or two ago and captured this
manifold pressure MAP Citroen C3
manifold pressure MAP Citroen C3

Then I did a run around the block, drive to the corner, up the hill in second to about 3200RPM, around the corner and down the hill in second under engine braking then around the corner and park. I blipped the throttle just towards the end of the idling.
live data showing manifold pressure, throttle opening and engine speed on a trip around the block.
live data showing manifold pressure, throttle opening and engine speed on a trip around the block.
You can add an avatar to your account - Avatar or change your vehicle details - Car Bio or even add a signature to your posts - Signature. But this is not all you can do in the User Control Panel :)
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