Intermittent red management light Dci

Ricky Poole

Ricky Poole

I have a 2007 Micra dci Activ red 1.5dci. Picked the car up as a non runner for a bargain, stuck a new battery on and new glow plugs in and worked a treat. However I then used the car to learn to drive, and experienced issues after I passed my test. Id get the red stop light come on under low end acceleration, hesitation sometimes and the car had no hope of starting if it had been shut off within the last hour.

Now the mechanic at the MOT centre I used said the fuel systems are common issues on these cars (thanks renault) and that to be sure of curing my issues I ideally need a new high pressure pump and 4 injectors, and I may as well do the timing belt at the same time. I forked out the fortune to have this done.

Now that its all done the car is a little rocket, pulls amazingly in every gear and really doesnt show its 104k miles, and has never let me down starting hot or cold. BUT the red stop light still comes on under heavy load, for example slotting into 4th at 30mph then accelerating. A simple plug in shows the error code P0089, which relates to the fuel pressure regulator. It should be noted that the error code isnt always present, it sometimes clears itself.

Ive scoured the internet for a solution but most peoples have gone away after changing the pump and injectors, but mines still here. There are no leaks or air in the fuel present and everything runs smoothly, are there any ideas out there for this? I am a student and after everything ive spent out on her already I dont know how much more i can fork out.

Thanks
Ricky
 
Silly question, but how recently was the fuel filter changed?..........another possibility is blocked fuel tank venting........
 
So when I got the car the clock said service overdue by 10k miles (guessing just not reset), so I replaced but with a cheap eurocarparts job.

When the pump and injectors were changed I decided it worthwhile to get a genuine filter whilst I was at it, and that was fitted about 600 miles ago and shows no signs of leakage. Any way to check the priming bulb for pinholes that may be too small to see? Really running out of ideas

Thanks for the reply
Ricky
 
Ricky Poole said:
So when I got the car the clock said service overdue by 10k miles (guessing just not reset), so I replaced but with a cheap eurocarparts job.

When the pump and injectors were changed I decided it worthwhile to get a genuine filter whilst I was at it, and that was fitted about 600 miles ago and shows no signs of leakage. Any way to check the priming bulb for pinholes that may be too small to see? Really running out of ideas

Thanks for the reply
Ricky
Click to expand...
Check the tank for blocked venting as this could cause the pump to pull a near vacuum in the tank, reducing the fuel delivery pressure..........Next time the problem occurs, stop the car and loosen the fuel cap, a loud hiss, as air is drawn in, would suggest a blocked vent...
edit. THIS makes interesting reading.....
 
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I just took the car for a run, got the red light and then pulled over and opened the cap. There was no hiss or any sign of pressure difference. Also thanks for finding the blog there, however I'm getting very different symptoms? Is it something I'm gonna have to live with maybe?

Thanks
Ricky
 
Very true John, this ones just leaving me stumped lol. Frustrating because I'm so in love with the car, plenty of torque, great on fuel and so cheap for a 19 year old like myself to insure, but I'm paranoid this red light issue is gonna get worse :/
 
Ricky Poole said:
Very true John, this ones just leaving me stumped lol. Frustrating because I'm so in love with the car, plenty of torque, great on fuel and so cheap for a 19 year old like myself to insure, but I'm paranoid this red light issue is gonna get worse :/
Click to expand...
Ricky Poole said:
Very true John, this ones just leaving me stumped lol. Frustrating because I'm so in love with the car, plenty of torque, great on fuel and so cheap for a 19 year old like myself to insure, but I'm paranoid this red light issue is gonna get worse :/
Click to expand...
Just found this on Pistonheads Ricky:-
'John deere
Tuesday 14th February

I had Nissan duke 15dci 61 reg with p0002 p0089 in it was missing an losing power under loads I replaced fuel pressure regulator and was the same, but when bleeding the system there was a drip from tank to manual pump connection witch turned out to be letting air bubbles into system intern causing fuel pressure fault codes!!'
 
Ricky Poole said:
Thanks John, Im assuming by manual pump they mean the priming bulb above the airbox on the dci's?
Click to expand...
I assume so but the bottom line is air bubbles in the fuel line before the injection pump, it would appear that if you take off the engine cover you can see this......
Everything points to this being your problem, if this is the case, 'all' you have to do is find out where the leak is, could be anywhere in the fuel line between the tank and the injection pump......o_O
 
checking live readings to pinpoint the cause is always better than throwing parts at it ricky, you need to monitor the rail pressure via obd when the problem kicks in really
 
Ricky Poole said:
The injection pump is new :eek: And theres no air bubbles in there, there was before the pump was changed
Click to expand...
If there were air bubbles in the fuel line before the injection pump was changed, I can't see any way that the injection pump could have caused it, which rather suggests that the problem had nothing to do with the pump and by virtue of the fact that you still have the problem intermittently, is still there and 'up stream' of the pump............some sort of fairly small 'air leak' in the fuel line seems most likely cause of your problem. A bigger leak would cause the more extreme effect of the engine cutting out due to large amounts of air in the fuel line, as described in the Renault blog that I linked to earlier...
 
sounds to me like excess rail pressure, hence the red light flagging and fuelcut
either rail pressure sensor or suction valve problem ?
 
I'll have a deeper look John but I find no signs of a diesel leak, even a small one. And thanks Frank, the error code says Suction Control valve issue however like the blogs John has posted, the issue is there after being changed. A journey with an OBD data logger attatched shows a peak rail pressure of 14,000psi, which is the maximum stated in the user manual so fuel pressure seems in order. Even when the red light is on theres no noticeable loss of power, it just comes on under low end acceleration since the pump and injectors were changed, but all the ecu data indicates no issue which is why I'm assuming there may be a tiny air leak somewhere as John says

Thanks guys
RIcky
 
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