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Posted by KEITH DA COSTA at 22:36 | 14 COMMENTS
Comments
Thursday, 3 June 2010, Keith Da Costa wrote:
Hi Cy,
Your vehicle has the Delphi fuel system. I can only suggest getting the injectors tested. If you can have the vehicle off the road for a few days, remove the injectors and send them to me for testing. If you are going to do this please mark the injectors relevant to which cylinder they come out of so that you will not have to recode the ECU when you put them back. When I test the injectors I will also be able to tell the condition of the fuel system to establish if their is any contamination, sometimes the pump breaks up and causes swarf to get into the injectors.
The cost to check the injectors is £ 80.00.
I hope that this will help,
Thanks,
Regards,
Keith
Posted at: 16:37
Thursday, 3 June 2010, cymon13 wrote:
Hi Keith,sorry for the lack of info! It's a megane II 2004 1.5 Dci. Not sure if it's a Bosch or Delphi but if you tell me how to identify which one it is I'll find out.
Yours Cy
Posted at: 15:54
Wednesday, 2 June 2010, Keith Da Costa wrote:
Hi Cy,
It would help if you can give me tha age of the vehicle, is it a 1.5 dci? you do mention 1.5d, if it is a standard engine do you know the fuel system Bosch or Delphi?
Thanks,
Regards,
Keith
Posted at: 16:37
Tuesday, 1 June 2010, cymon13 wrote:
Hi There, I've been reading all of the blogs on your site to see if there is a solution to the problrm with my renault megane 1.5d. It's blowing out smoke (probably blue), slight smell of oil too. I had it serviced about 2 months ago by an independant garage and since then it's been smoking. It's not all the time, mainly on start up and if I've been at lights for a minute or so. It can happen when the engine is cold or running at temp. I hadn't had the car service for some time before this service and them mechanic recommended either thicker oil or a new turbo!!! These to me are very extreme ends of the spectrum! I have put some treatment into the engine oil and the fuel tank, this has improved performance slightly but not solved the smoke issue. I'm a bit wary of garages and would like to have an idea of what they are talking about when I take it in. Yours Cy
Posted at: 14:41
Friday, 30 April 2010, hbrooks wrote:
hi, cheers for the suggestions, looks like a busy weekend ahead. Will let you know how we get on. Do you test injectors?
Regards HB
Posted at: 09:36
Friday, 30 April 2010, Keith Da Costa wrote:
Dear hbrooks,
The next thing is the air flow meter on the inlet to the air intake, I would think that this is an electronic device so I am not sure how you will test it. If you strip it you should see something like a fine wire down the centre of the air flow. This wire pickup sometimes gets dirty and does not take a correct reading, perhaps try cleaning it.
You can check and clean the EGR valve ( exhaust Gas Recycling unit) these again can stick so a good clean might help.
You could have a problem with the injectors not delivering enough fuel due to the nozzles being blocked, this does not happen very often but I have seen it a few times. Unfortunately the only way is remove the injectors and send them in for testing.
The thing is that the vehicle is not smoking so it still seems that it is not getting enough fuel, replace the fuel filter with a genuine one.
Sorry I think that I am running out of ideas, try these things and let me know.
Regards,
Keith
Posted at: 07:52
Thursday, 29 April 2010, hbrooks wrote:
Dear Keith, found and checked the turbo waste gate and that is not rusty and moves ok. your next suggestion eagerly awaited. Because it's a bank holiday have got some spare time, so could you please list more than one thing to check in order of preference. Thank you in advance you are a real life saver with a good heart and obviously a great deal of patience. Best wishes HB
Posted at: 21:46
Thursday, 22 April 2010, Keith Da Costa wrote:
Dear hbrooks
If there is no smoke that indicates that you do not have a air to fuel ratio imbalance, you are just not getting enough fuel. There are many things that you can check; I do not want to give them all to you at once as that only confuses things.
The first is to check the turbo waste gate, if you look around the turbo you should see a device with a rod going into the feed side of the turbo. The device could be activated by either vacuum or electrical. When you boot the vehicle, the device moves the rod to dump and excessive turbo boost pressure. If this is stuck open or closed it will not allow the ECU to deliver more fuel. I have found that the rod rusts and then sticks, check for free movement and if need be spray some Deblock oil onto it. The reason that it might not come up with a fault code is because it is a mechanical device.
Happy hunting,
Regards,
Keith
Posted at: 13:26
Thursday, 22 April 2010, hbrooks wrote:
Hi Thank you for your answer this problem is driving us round the bend. In answer to your questions,There is no smoke, It is like driving a petrol car with the choke out and the light sometimes comes on when power is asked for.once again thank you for your time, diagnostics are expensive and can only show a problem when it is happening so the only solution we are told is bring it back and pay for another test.The car has become undriveable.
Posted at: 10:52
Thursday, 22 April 2010, Keith Da Costa wrote:
Dear hbrooks,
Sorry I do not have the answer to your problem but the way to try and diagnose the problem is to get back to basics. When you demand more power the fuel system needs to increase delivery and match this with air flow. Does the vehicle emit smoke at all and does it feel as though it is holding back with a slight hesitation?
When does the light come on, at the same time as you are demanding more power?
Thanks,
Regards,
Keith
Posted at: 09:18
Wednesday, 21 April 2010, hbrooks wrote:
Hi saw item by pugwash, my son has a renault megane 1.9dci and has had the same problem of no power under acceleration especially going up hills and overtaking. The engine management light comes on intermittently so diagnostics cannot find the problem. Please any suggestions
Posted at: 18:33
Thursday, 4 February 2010, pugwash wrote:
Renault Scenic
I recently bought one of these for my daughter - it has a 1.9dci engine.
After a couple of weeks the boost warning light kept coming on and there was a loss of power when going up inclines. We took it back and the garage replaced the AVG and air mass meter - all seemed well for a couple of weeks when the problem re-occured the car went back to the garage again. They advised that the air mass meter had failed and they fitted another, this time an official Renault spare.... again the problem re-occured after a couple of weeks. This time we took it to another garage a specilaist diagnostic diesel engineer. he had the 2 days but could not find a fault - he did put a cleaner through the engine and this has improved the running but the boost warning light still comes on and the car is sluggish although not as bad as before! Have you any ideas please? Barry Pick (Dad)
Posted at: 10:31
Saturday, 2 January 2010, Keith Da Costa wrote:
Hi Verity,
Firstly make sure that the glow plugs are working. Perhaps obtain a battery booster pack, this will help to turn the engine over quicker, they are about £ 47.00 and can be found at http://www.overstock.com/Home-Garden/Automotive-Booster-Pack/3552857/product.html?cid=133635
You can also try some of our diesel additive, this will prevent the fuel from freezing. All fuel will have some water content in it and by useing our Diesel Aid the water is brocken down so it can not freeze. If you do order some let me know so that I can make up a mix that will assist more in the water dispersal.
I hope that this helps,
Regards,
Keith
Posted at: 11:37
Saturday, 2 January 2010, vmcg wrote:
KIA SEDONA
I am hoping that some one can offer me some advice. I live in rural Ireland and the temperatures have been getting quite cold lately, something that I don't think my car was prepared for!
I have great difficulty starting the car in the morning, it's almost like the engine itself has frozen., there is anti-freeze in the system. I have spent quite a few nights going out every hour and starting the car and letting it warm through, but I can't continue to do this until the spring!
What preventative measures can I take? The car is parked outside and has no protection from the elements, I have 5 small children and am now starting to get concerned that I can't rely on my vehicle in case of an emergency. Any ideas?
Verity
Posted at: 10:58
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