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Renault Traffic DCI p1882 fuel rail pressure sensor circ

Posted By Hairy Heflon 11/26/2008 5:58:16 AM
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Hairy Heflon
 Posted 11/26/2008 5:58:16 AM
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Hi All,

We have a  52 plateTraffic DCI 100 SL 27 which is intermittantly cutting out/flat and fault read is "P1882 fuel rail pressure sensor circuit"

Ecu is a G9t.

After speaking to Renault we have changed the pump pressure sensor and repaired a worn wire leading to it,(we were told by our supplier they have changed 10 this year and 20 last year!)

Only the fault is still occuring.Any help appreciated!

Regards

Hairy

Angus
 Posted 11/26/2008 9:18:14 AM
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Hairy

There were a batch of faulty rail sensors stock-purged around that year - I had the same symptom of cutting-out when flat-out on a couple of vans.

Broken wires inside the loom are very common.  Bell the circuit through from the ECU, or measure the voltage on the three pins at idle.

[By pump pressure sensor, I take it you mean the £180 brass sensor in the fuel-rail?]

.

MMS
 Posted 11/26/2008 10:00:15 AM
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Had the same fault on a 52 plate movano yesterday, it had one of these aftermarket fuel saver devices wired into it. Disconnected the "device". Problem dissapeared.
wolfie28
 Posted 11/26/2008 5:33:03 PM
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Had similar problem on same van, changed fuel rail and found to still be the same. ended up bieng on of the 3 wires going to the fuel pressure sensor on top of the rail, just gave them all a good tug and it was easy to spot.
Hairy Heflon
 Posted 11/27/2008 6:09:42 AM
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Angus (26/11/2008)
Hairy

There were a batch of faulty rail sensors stock-purged around that year - I had the same symptom of cutting-out when flat-out on a couple of vans.

Broken wires inside the loom are very common.  Bell the circuit through from the ECU, or measure the voltage on the three pins at idle.

[By pump pressure sensor, I take it you mean the £180 brass sensor in the fuel-rail?]

 

The sensor we changed was the pump one (Held on by three torx screws)

Have checked the wiring all seems fine and no added extras fitted to fuel system.

Is that brass rail sensor a more common faulty item?

Angus
 Posted 11/27/2008 8:01:41 AM
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Hairy

That isn't a pressure sensor?  That's the regulator.

The rail pressure sensor, that your code refers to, is in the middle of the rail.

Check the voltage on all three pins, at idle and come back.

.

MMS
 Posted 12/1/2008 12:18:25 PM
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Well thats what I get for opening my mouth. since removing aftermarket fuel saving device my movano (same code) has been fine for a week. guy phoned up this morning and fault is back. :-( obviosly at 180 odd quid for a sensor I want to make sure that, that will cure it. I am getting live data which shows the fuel pressure seemingly behaving as it should be though ????

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