E10 fuel is not compatible with all vehicles.

The introduction of E10 fuel has been seen nation wide recently and is affecting cars up and down the country.

If you have a classic or old car it will not run on E10 without additional additives, but we are seeing it affect much newer cars!

We are having more fuel related faults through the garage than ever before from poor running engines to fuel pump failures.

Here is a quote from a well known car magazine-

It is estimated that around 600,000 cars on the road are not compatible with E10 fuel. Drivers should check if their vehicle manufacturer recommends it. Even if a car is suitable for using E10 we call for caution, as the ethanol is HYGROSCOPIC, which absorbs moisture from the air. Moisture increases engine deposits and affect drive-ability, which leads to corrosion and eventually component failure.Using E10 petrol can also affect fuel economy and it is reported drivers may experience around 1-3% reduction.

There seem to be several new additives coming to market to help vehicles affected by the new E10 fuel.

Wynns E10 Fuel Protector

It will take time to see if there will be any long term damage or affects to engines due to the E10 fuel but for now the only thing we can advise is to use the additives designed to help your engines and fuel systems.



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Ford Transit 2.0 EcoBlue TDCI Wet Belt Problems!

The Ford Transit is probably one of the most common vans seen on the road today and is championed by tradesmen and delivery drivers up and down the country.

With the latest edition to the Transit range the 2.0 EcoBlue TDCI you get a Timing Belt in replacement of the old Timing Chain which Ford recommend to be replaced at 150,000 miles or ten years.

What we are seeing in the trade though is timing belt failures well before either the 150,000 mile interval or the ten year time frame.

We are recommending customers to get theirs changed around 60,000 miles or five years to prevent the chance of failure and a hefty bill for un-necessary engine repairs caused by the failure.

Transit Timing Belt



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Cars vital for second ‘staycation’ summer, RAC research reveals

Some 70 per cent of motorists set to use their car or motorhome for a summer get away

Cars vital for second ‘staycation’ summer, RAC research reveals

More than four-in-10 drivers in the UK (43 per cent) already have firm plans for a UK staycation this summer, according to research carried out by the RAC.

While only 13 per cent of the 2,100 drivers surveyed in April said they hoped to head abroad this summer, nearly half of this group (48 per cent) said they would try to take a holiday somewhere in the UK if coronavirus restrictions made going abroad impossible – which could have the effect of swelling traffic volumes during the summer months.

A quarter (24 per cent) said they would look to delay their trip to another date when restrictions are hopefully eased, whereas 16 per cent say they would simply forego a holiday this summer.

One-in-10 (11 per cent) were uncertain as to what they would do in that event.

With official data showing that 19 of the 20 countries to which UK residents make the most visits in the summer are currently on the government’s ‘red’ and ‘amber’ list and are effectively off-limits, the RAC research points to the possibility of an extremely busy summer on the UK’s roads.

Related: One in five car owners never check engine oil, research finds

Of all of those planning to get away, a quarter (24 per cent) took the decision to book last year while another quarter (25 per cent) waited until this year.

But the remaining half (51 per cent) say they plan on sorting out a summer break at shorter notice.

More than four-in-10 (44 per cent) of the those surveyed don’t expect to take a summer holiday at all this year.

RAC spokesperson Simon Williams said: “For those heading off in the UK this summer it’s very apparent that the car is going to be the transport mode of choice.

Related: Average age of UK cars rises to 8.4 years

“What’s more, if those who have foreign trips planned can’t take them there is every chance the roads will be far busier than they would be in a normal summer, especially if we’re blessed with good weather as this will cause the number of day trips and weekend breaks to rocket.

“If traffic volumes really do swell this summer, it could turn out to be more important than ever that drivers check their vehicles before setting out to avoid a breakdown at the roadside – oil, coolant and screenwash levels should be checked, and all tyres should free of damage and inflated to the right levels for the load being carried, particularly if the whole family is on board and the car is jam-packed.

“Anyone who’s put off getting their car fixed or serviced during Covid should take action sooner rather than later to avoid their staycation being spoilt by a breakdown.”

Aarons Autos car service garage.

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Volkswagen Scirocco with a leaky Inter-cooler.

This VW Scirocco came into us with an intermittent running fault, it would randomly put the engine management light on and go into limp mode.

Firstly we carried out a diagnostic code read to see if there were any stored codes and what they related to?

Several codes were stored relating to faults in different systems! Oxygen sensor, Boost pressure and EGR system.

We decided to carry out a smoke test on the intake system as all of these faults can be affected by an air or boost leak.

(A Smoke Tester fills a system with lightly pressurized smoke allowing the user to see any small leaks that may not be obvious to the naked eye.)

We found a leak from around the inter-cooler area but the car needed stripping further to be able to access this area, once the bumper had been removed we could see clearly that there was a split in the inter-cooler housing which was small enough to allow the car to still run reasonably well but bad enough to throw out several sensor readings.

Big Strip Down To Remove The Inter Cooler.
Split Inter Cooler.

After we replaced the inter-cooler and cleared all related fault codes we carried out a road test and checked live data, all sensors were reading as they should and the car drove perfectly without putting the engine management light on and no more limp mode.



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Renault Megane RS265 has incorrect swivel joints fitted!

This Renault Megane RS265 came into us with the usual tell tale signs of worn swivel joints, creaking when turning and knocking.

Once we had removed the N/S swivel joint we could see they had been replaced before with some cheap after market joints.

We replaced both joints with our genuine swivel joints and it was ready to go.

Here at Aarons Autos we can replace the swivel joints on your Renault Megane RS250 RS265 RS275 and Clio RS197 RS200.

Aarons Autos car service garage.

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Vehicle owners told to stay on top of Servicing and Maintenance during lockdown.

More than half of drivers do not know when next service is due

Vehicle owners told to stay on top of maintenance during lockdown

Highways England and Aarons Autos are this week encouraging road users to carry out regular vehicle maintenance and checks during the current national lockdown after a new survey revealed that more than half (54 per cent) did not know when their next service is due.

Nearly a third (32 per cent) of road users admit they only carry out basic vehicle maintenance, such as checking their tyre pressure or oil levels, at best every few months or never.

This is in spite of advice to perform regular vehicle maintenance – even when a vehicle is not in regular use during lockdown – on top of the recommended annual service and mandatory MOT.

In response to the survey, Highways England and partners – breakdown provider, Green Flag, and Aarons Autos – are now highlighting the importance of basic maintenance and checks in helping road users to avoid breakdowns or endangering themselves and other drivers. 

Related: Half of UK drivers at risk after delaying essential car maintenance this year

Without proper care and attention during lockdown, owners risk tyre problems, flat batteries, weather damage and issues due to fluid levels running low when they begin using their vehicle again.

Jeremy Phillips, head of road user safety, said: “While the country is in still in lockdown, we want to remind drivers to act now and carry out those important basic checks. 

“Doing regular maintenance, rather than waiting until the end of lockdown is in sight, will ensure their vehicles still work and preventable breakdowns are avoided when restrictions are lifted and the nation gets back on the road.”

Related: Police issue warning amid lockdown MOT confusion

Every year Highways England’s traffic officers deal with more than 85,000 breakdowns – 40 per cent caused by vehicles running out of fuel, poor tyre maintenance, power loss and engine trouble. 

Basic checks and maintenance can prevent many breakdowns, says Highways England.

Mark Newberry, commercial director at Green Flag, said: “Cars are designed to be driven regularly and the components rely on regular use to stay in tip-top condition. 

“A period of lockdown means many vehicles that may have been running every day could now be used less, which can lead to a number of complications.

Related: Vehicles failing MOT in record numbers over emissions

“Car batteries are often the hardest hit. During the first lockdown, over 60 per cent of our callouts were for battery-related issues and the colder weather will also have an impact by reducing the battery’s ability to hold charge.

“Carry out a few basic checks to make sure your car is ready for when you need it. 

“Don’t leave it until your next MOT or service if you know or feel there is something wrong with your car.”

For more information or to make a booking you can contact us at info@aaronsautos.co.uk or call us on 01332 205070 or just click the ‘Book Online’ button.

BMW 1 Series ABS Fault.

We are seeing lots of BMW 1 Series and 3 Series with ABS faults caused by the same fault.

The codes for this particular BMW were –

  • 5DC1 – Wheel Speed Sensor Rear Right Extrapolation
  • 5DC2 – Wheel Speed Sensor Exciter Ring Rear Right Periodic Fault

After seeing these codes on the Diagnostic Scanner we needed to take a look at the rear right Wheel Speed Sensor and Reluctor Ring to see if there were any obvious faults.

We could see the problem straight away, what seems to happen with the BMW drive shafts is that rust starts to build up underneath the reluctor ring pushing it away from the the shaft causing it to catch the ABS Wheel Speed Sensor.

Reluctor ring pushed out by rust.

To repair this fault you can either try to remove the rust from the drive shaft and replace the reluctor ring and wheel speed sensor (if required), we have seen problems with this repair as once the rust is removed from the drive shaft the outer diameter is smaller and the reluctor rings can come loose and cause more issues.

Damaged ABS Wheel Speed Sensor.

We replace the complete drive shaft to ensure this cannot happen, in this case we replaced the ABS speed sensor too as it had been damaged due to its contact with the reluctor ring.

New Driveshaft Fitted.

Once replaced we cleared all the fault codes from the BMW and carried out a road test whilst checking Live Data on our Scanner to make sure the speed sensor was reading correctly.

Aarons Autos car service garage.

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Hyundai I20 Timing Chain Noise.

A customer brought their Hyundai I20 into us to check for an engine noise which they were concerned about.

As soon as the car drove into the workshop we had a good idea what the problem was, it sounded like the timing chain was trying to escape from the engine!

After having a good listen to the engine the next step was to strip off the timing chain cover to allow us to visually check the chain for condition.

With the timing chain cover removed we checked the timing chain, guides, gears and tensioner for wear, the chain tensioner was at full extension and the chain was still loose!

Whilst trying to turn the engine over manually to align the timing marks the chain actually started jumping teeth (it had only been the chain cover stopping this happening whilst driving).

Timing chain cover where the chain had been rubbing!

On inspection of the parts we could see everything was worn to excess and the customer had been very very lucky the chain didn’t slip whilst driving as that would have caused serious engine damage.

Once the timing chain kit had been replaced and the engine rebuilt the car purred as it should.

We later found out the Hyundai I20 had not been serviced for several years and thousands of miles leading to this problem.

Regular servicing using the correct lubricants will prevent premature wear on all engine parts especially chains, guides and gears.

Aarons Autos car service garage.

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EGR blocked on this Renault Traffic.

This Renault Traffic came into us with its EML (engine management light) on and had a lack of power.

The first job was to carry out a diagnostic code read which showed up several codes relating to EGR valve faults.

As it is quite a big job we needed to get authorisation from the customer to remove the front end off his van access the EGR valve.

Once we had removed the front end we could access the EGR valve and start to remove it, once removed we could see the problem.

Completely blocked EGR valve.

The EGR valve and pipes were completely full and blocked with carbon deposits which was stopping the valve from working properly.

Blocked EGR pipes.

We replaced the EGR valve and cleaned out all the pipes to and from the valve, this cleared the codes and allowed the vehicle to drive at full power.

New EGR fitted.

Unfortunately due to the amount of carbon build up in the pipes we determined that the rest of the intake system would have similar carbon deposits in them and may need cleaning in the future.

We advised the customer to take the van on several long journeys at an average RPM of 2500 this will allow the engine to carry out a regeneration of the DPF (diesel particulate filter) and help clean out carbon deposits from the intake system.

This will no doubt have to be carried out several times to get the engine into a good internal condition.

The biggest problem with modern diesels is that people drive them economically and on short journeys, this is what causes the carbon deposits to build up and cause issues, ideally they should be used for long journeys at least once a week to allow the engine to clean itself.

For more info on EGR or DPF faults don’t hesitate to contact us.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Golf / Jetta TDI with DPF and boost faults.

This Volkswagen Jetta came into us with its engine management light, DPF light and glow plug light illuminated. It had very little power and needed some attention.

Firstly we carried out a diagnostic code read to see what fault codes were causing the light to be on, several codes relating the Diesel Particulate Filter (DPF) being blocked or soot content to high and one relating to boost pressure lower than expected.

Next we tried to clear the codes and restart the car to find out which codes stayed live, in this case all the codes stayed.

We tried to carry out a Diesel Particulate Filter Regeneration which with this particular car has to be done whilst driving.

You have to drive the car in 4th or 5th gear at approximately 2000 rpm until the DPF light goes out, this can take up to 40 minutes depending on how blocked the DPF is.

The regeneration did not work, so back to the workshop for some more tests.

We tested the differential pressure before and after the DPF, this is done using a pressure gauge which is connected on to the pressure sensor pipes, if the pressure is to high the DPF wont allow you to carry out a regeneration and the DPF will need to be cleaned out using chemicals either on or off the car.

The DPF soot content on this Jetta was very high so we decided to remove the DPF and have it chemically cleaned.

DPF removed from car.

Whilst the DPF was off we decided to check in to why we were getting a code for low boost pressure, we checked the turbo actuator pipes for leaks which all seemed ok then we checked to see if the actuator was working using a vacuum tester, the actuator wouldn’t hold vacuum.

We removed the turbo actuator and tested it against a new one (see the video below)

Once the DPF had been cleaned out and we had replaced the faulty turbo actuator it was time to retest the the car.

We cleared the codes and took it for a road test, all the warning light extinguished and we had full power, brilliant.

After speaking to the customer we realised that the car had lost power several months ago and he didn’t have it looked at until now due to the fact of not just one warning light being on but three on the dash.

The car wouldn’t carry out a driven regeneration of the DPF (which they do regularly under normal circumstances) due to the faulty turbo actuator which then caused the DPF soot content to increase until it was full causing all the warning lights to come on.

The Moral of this story is ‘Warning lights are important‘ if you have a warning light come on on your car get it checked out before it causes any more damage.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.