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  • FIRST POST
    • alirob12
    • By alirob12 12th Dec 11, 8:30 PM
    • 786Posts
    • 31Thanks
    alirob12
    Renault Scenic losing power problem
    • #1
    • 12th Dec 11, 8:30 PM
    Renault Scenic losing power problem 12th Dec 11 at 8:30 PM
    Hi,

    I wonder if anyone can help.

    I drive a 2002 Renault Scenic 1.9dci. Recently my accelerator cable broke and the AA have fixed it temporary. I drove it for a couple of weeks like this and a couple of times something happened, where I was fully pressing my accelerator but the revs only moved to 1800 and I was only able to drive it like 20mph. After a short while everything was fine.

    Last week a friend of mine replaced the cable (also disconnected the battery to replace the reverse switch). Ever since it has gone from bad to worse. The above situation still happenes where I am flooring it but only getting under 2000 revs. But in addition I get a lot of misfiring, choking, when I accelerate I hear (what my friend described as when not all cylinders are working properly etc)….

    We connected the fault reader but nothing came up but was unable to get the live data. The orange light came up which said something like electric / fan fault?? but only comes up when engine is struggling e.g. going up the hill??

    It seems to be working better when driving faster e.g. when th turbo kicks in, but still not right… Any idea anyone PLEASE????
Page 1
  • Hammyman
    • #2
    • 12th Dec 11, 8:36 PM
    • #2
    • 12th Dec 11, 8:36 PM
    When was the last time it had a service? When was the last time the fuel filter was changed? Is there a lot of black smoke coming out the back?
    • alirob12
    • By alirob12 12th Dec 11, 9:44 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    • #3
    • 12th Dec 11, 9:44 PM
    • #3
    • 12th Dec 11, 9:44 PM
    it was checked last year. i will do it again though... worth a try!!
    • atrixblue.-MFR-.
    • By atrixblue.-MFR-. 12th Dec 11, 10:59 PM
    • 6,380 Posts
    • 4,398 Thanks
    atrixblue.-MFR-.
    • #4
    • 12th Dec 11, 10:59 PM
    • #4
    • 12th Dec 11, 10:59 PM
    it was checked last year but not serviced, so when was it serviced? your not one of those who expect a car to run forever without lifting the bonnet are you! lol.

    depending on engine as you have the 2002 1.9 dci on change over year.

    this symptom is common of high pressurefuel pump or injector failure to the 1.9 DCI 2003-2008 if you.

    symptoms are:

    engine management light coming on and message on display injector fault (if you have the ODB2 diganostic read out display where your radio station is displayed) or if no read out message you will need a renault "CLIP" fault code reader (around £300) to obtain manufacturers specific code, or go to renault for the fault code read at around £60-£80.

    start up from cold is hard after glow plug heater light out finding yourself looking for the diesel primer head to push the plunger in a few times to get going.

    0-30 MPH is sluggish, engine misses or backfires and smoke is plumed out the exhaust engine management light (the orange light shaped like an engine) kicks on stays on and revs go no further than 3000rpm max due to engine in limp mode.

    idle is rough, unsteady and revs bounce about 700-1000 RPM even when engine is warm.

    cause 1. highpressure pump has failed, the internals have probably gone into fragments and are now blocking the injectors.

    cause 2.injector failure a common prblem on 1.9 2.0 DCI renault engines, depending on what type of fuel pump you have a fly by wire or a mechanical high pressure pump, the injectors go down either as a single or as a pair 1 and 3 or 2 and 4 injectors, injectors are coded to the cars ecu and cannot be changed without the new injectors being programed.

    cause 3. the cheapest, idle speed control, egr valve blocked, catalytic converter failed, lambda sensor failed, thorttle positione sensor failed.

    either way you if your garage cannot access the live read in the ecu, or read any of the codes with a good expensive fault code reader renault would be the next step in diagnosis.
    I make spelling mistakes, its not intentional, its a condition I have please afford people who have these conditions some respect and not single out their posts for correcting mistakes.
    • alirob12
    • By alirob12 12th Dec 11, 11:20 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    • #5
    • 12th Dec 11, 11:20 PM
    • #5
    • 12th Dec 11, 11:20 PM
    Thanks very much!!! looks like you are spot on!! i will get my mechanic to have a look. And i do actually look after my cars!!! I only bough this one 6 months ago and apparently according to papers it was serviced last January, and i was planning to get it serviced in the next couple of weeks before the MOT in Jan.

    Thank you for all your help!!!
    • atrixblue.-MFR-.
    • By atrixblue.-MFR-. 12th Dec 11, 11:42 PM
    • 6,380 Posts
    • 4,398 Thanks
    atrixblue.-MFR-.
    • #6
    • 12th Dec 11, 11:42 PM
    • #6
    • 12th Dec 11, 11:42 PM
    Thanks very much!!! looks like you are spot on!! i will get my mechanic to have a look. And i do actually look after my cars!!! I only bough this one 6 months ago and apparently according to papers it was serviced last January, and i was planning to get it serviced in the next couple of weeks before the MOT in Jan.

    Thank you for all your help!!!
    Originally posted by alir!!!2
    your second post read as you had just had it checked, nothing actioned within that check. do appologise.
    I make spelling mistakes, its not intentional, its a condition I have please afford people who have these conditions some respect and not single out their posts for correcting mistakes.
    • alirob12
    • By alirob12 20th Dec 11, 9:06 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    • #7
    • 20th Dec 11, 9:06 PM
    • #7
    • 20th Dec 11, 9:06 PM
    atrixblue.-MFR-. MASSIVE thank you!! it was he EGR Valve.. Thank you for all your advice!!!
  • thefishdude
    • #8
    • 21st Dec 11, 12:03 AM
    • #8
    • 21st Dec 11, 12:03 AM
    awee was just about to say it was egr valve and you allready solved it lol. i had exact same prob last year with an 1.9dci. orange light and low power up hill etc .
  • vax2002
    • #9
    • 21st Dec 11, 12:06 AM
    • #9
    • 21st Dec 11, 12:06 AM
    Yep, EGR valve, they gunk up on this engine, you can scrape them out and wash them in petrol to clean them and re-fit, they are a nightmare on this engine.
    • alirob12
    • By alirob12 21st Dec 11, 12:07 AM
    • 786 Posts
    • 31 Thanks
    alirob12
    thanks yes excatly that!! it was so annoying and i was worried that it would be expensive but thankfully thanks to nice people on here i got help and my mate fixed it!!

    thanks
    • alirob12
    • By alirob12 26th Feb 12, 4:51 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    hello... unfortunately i have started having the same problem - but its only the idle state where i get about 2500revs for a while - it doesnt happen very often but nevertheless it happens. I thought t was the egr, but this morning i replaced it with a newer 2nd hand but it it happened again - so i dont think its the egr. the orange fan light came on... im planning on changing the fuel filter as my next thing - any suggestions what else to look at? thank you
    Last edited by alirob12; 26-02-2012 at 4:57 PM.
  • Delivery Driver
    To the left of the battery is some black plastic intercooler pipework with a sensor on it(map sensor).The wiring coming from the loom to this plug is too short and over time engine vibrations snaps the wires and can cause the fault you describe.Shine a torch on the sensor plug at different angles as you cannot always see if the wires have snapped from directly above.
    If it is this, then either lengthen the wires going into the plug by splicing in 3x 2" lengths or do away with the plug altogether and solder the original wires to the sensor or fit spades(will have to be very small ones) and slot them on.If you do it this way then use insulating tape to keep the damp out.
    I had this problem and it took a lot of searching on the internet before finding the solution.After fixing it, the car stopped going into limp mode and the mpg rose significantly.
    • alirob12
    • By alirob12 11th Mar 12, 6:05 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    hi i thought i sorted it by changing the egr valve... but after about 2 weeks the problem came back. i have now disconnected the MAF - and it seemed perfect for about 2 weeks again but as i drove out the other day the orange fan light came on again and the revs would only go up to about 2500. it went back to normal after a second - but still it happened. I will try the above suggestion having replaced the MAF... hopefully it will get sorted.
    Thanks
    • Brooker Dave
    • By Brooker Dave 11th Mar 12, 7:44 PM
    • 4,616 Posts
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    Brooker Dave
    hi i thought i sorted it by changing the egr valve... but after about 2 weeks the problem came back. i have now disconnected the MAF - and it seemed perfect for about 2 weeks again but as i drove out the other day the orange fan light came on again and the revs would only go up to about 2500. it went back to normal after a second - but still it happened. I will try the above suggestion having replaced the MAF... hopefully it will get sorted.
    Thanks
    Originally posted by alir!!!2
    Turbo actuator?
    "Love you Dave Brooker! x"

    "i sent a letter headded sales of god act 1979"
    • atrixblue.-MFR-.
    • By atrixblue.-MFR-. 12th Mar 12, 4:21 AM
    • 6,380 Posts
    • 4,398 Thanks
    atrixblue.-MFR-.
    youve disconnected the MAF, now it can read the airflow.

    my suggestion would be look at getting mafs replaced. tighten all pipework from intercooler to turbo then upto airinlet look for splits where air could possibly be leaking out. also if a pipe is soft and worn the can partially or fully collapse when sucking in air restricting flow.

    egr was blocked last time, can cause damage to the cat converter, filling it with carbon soot, throttle housing may also be caked up in carbon deposits give throttle a good clean with carb cleaner and a soft cloth (dont scratch the surface of the shutter). while your replacing the MAFS.
    I make spelling mistakes, its not intentional, its a condition I have please afford people who have these conditions some respect and not single out their posts for correcting mistakes.
    • alirob12
    • By alirob12 17th Mar 12, 4:29 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    Thank you everyone. MAF changed, full service done and so far so good... It even feels more dynamic so thats great. Old MAF had a load of stuff flying around inside - whether that was it - im not sure.

    Lets hope it has fixd the problem for good.

    Last thing to do is my reverse switch 2 things - 1st - does anyone know where the switch is on scenic mk1 1.9dci - i tried to look in the the obvious places - under the battery - underneath - by handbrake etc, 2nd - does anyone know if it is a 2 or 3 pin for 2002 1.9dci models? many thanks in advance.
    • atrixblue.-MFR-.
    • By atrixblue.-MFR-. 17th Mar 12, 7:30 PM
    • 6,380 Posts
    • 4,398 Thanks
    atrixblue.-MFR-.
    Thank you everyone. MAF changed, full service done and so far so good... It even feels more dynamic so thats great. Old MAF had a load of stuff flying around inside - whether that was it - im not sure.

    Lets hope it has fixd the problem for good.

    Last thing to do is my reverse switch 2 things - 1st - does anyone know where the switch is on scenic mk1 1.9dci - i tried to look in the the obvious places - under the battery - underneath - by handbrake etc, 2nd - does anyone know if it is a 2 or 3 pin for 2002 1.9dci models? many thanks in advance.
    Originally posted by alir!!!2
    depends on what colour the switch is and without locating it you cant tell.

    IIRC its not ontop of the box but to the side at the rear near the linkage arms. and the battery, fuesebox, needs to come away from the area to get your hands in to get it out.

    green=2 prong plug.

    black= 3 prong plug. if memory serves me.

    have a thread lock handy when replacing to make sure its seals back to the box properly.

    i think theres a guide on renault forums! on changing one of these.
    I make spelling mistakes, its not intentional, its a condition I have please afford people who have these conditions some respect and not single out their posts for correcting mistakes.
    • alirob12
    • By alirob12 27th Mar 12, 10:36 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    And back again, 2 weeks being perfect and it happens again!! what the heck??? Iam getting really tired of it!!! As above, fully serviced, new MAF and EGR.. 2 weeks - no problem and it happens today when i have very little diesel in the tank... could this be anything? I filled up and managed to get home without it happening again???
    • atrixblue.-MFR-.
    • By atrixblue.-MFR-. 27th Mar 12, 11:29 PM
    • 6,380 Posts
    • 4,398 Thanks
    atrixblue.-MFR-.
    And back again, 2 weeks being perfect and it happens again!! what the heck??? Iam getting really tired of it!!! As above, fully serviced, new MAF and EGR.. 2 weeks - no problem and it happens today when i have very little diesel in the tank... could this be anything? I filled up and managed to get home without it happening again???
    Originally posted by alir!!!2
    was the fuel filter replaced as this full service interval?

    in a scenic never rely on the fuel guage when its at a low point, its quite convincing you have about 30-40 miles left in it but in reality its about 3-4 miles, coupled with dragging dirt the minute bit of water in the fuel lines and up into the injectors its not a good idea in a 1.9 DCI to let the needle dip below a quarter left so not to drag up bits in the bottom of the tank.
    I make spelling mistakes, its not intentional, its a condition I have please afford people who have these conditions some respect and not single out their posts for correcting mistakes.
    • alirob12
    • By alirob12 27th Mar 12, 11:44 PM
    • 786 Posts
    • 31 Thanks
    alirob12
    thanks, yes the fuel filter was changed. Normally the diesel light comes on when i supposedly have 50miles left in the tank (i dont really rely on it) and just put some diesel around then. However today for the first time ever it went down below 50 - (45 to be excat) and the light didnt come on. So this is unusual... so i decided to fill up and it seemed ok. I ll check it in the morning and will see what happens...
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