Tag Archives: aarons autos derby

2017 Audi TT 1.8 TFSI With Fault Code P00b7 – Fixed.

This Audi TT was brought into the Garage with its Engine Management Light (EML) on, after carrying a Diagnostic Code Read we could see numerous codes in its ecu the main one for us was P00b7 which related to poor coolant flow!

When checking the live data we could see that the engine coolant temperature sensor was reading at over 100 degrees whilst the radiator temperature sensor was at a stable 40/45 degrees even after a road test.

The cooling system on this car is controlled by an electronic thermostat which is built into the back of the water pump housing located under the inlet manifold.

To access the water pump housing we removed the inlet manifold for ease, once the manifold was off we removed the water pump and housing for inspection.

When we removed the cover off the electronic thermostat we could see that the gear on the operating motor had broken off meaning that it couldn’t open the thermostat.

The Fix

Using genuine Audi parts we replaced the water pump and water pump housing along with its drive belt then rebuilt the engine so that we could retest for operation.

After running the engine up to temperature we rechecked our live data, the engine temperature sensor was now reaching 98 degrees and then dropping as the thermostat opened and we could see the radiator temperature increase too.

Once the car had been road tested and rechecked for leaks it was handed back to its owner.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Nissan Pulsar Timing Chain Faults Found.

We have seen quite a lot of Timing Chain faults recently across different manufacturers from Nissan and Renault to Audi and Volkswagen.

The faults range from chains stretching and causing the Engine Management Light (EML) to come on to chains slipping and causing poor running and in some cases non start.

There is a lot of speculation as to why the chains in modern cars don’t seem to last as long as their predecessors such as poor oil quality, poor design, poor materials etc…..

What we can say is this problem is becoming more and more common and it is something you cannot ignore, if your engine starts to get a rattle that was not there before or your EML comes on and you have codes for ‘Incoherence between Cam and Crank Sensors’ make sure to get it into the garage to be checked out before it does any serious damage.

Here we have a picture of the timing chain cover from a 2016 Nissan Pulsar that had recently started to rattle, as you can see the chain was so loose it was starting to catch the top of the chain cover and wear it away.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Cancelled Bookings Cost Time and Money!

Over the last couple of years we have seen a large increase in jobs being cancelled last minute by customers and also not turning up for their appointment on the day.

This in turn has a major affect on the day to day running of our workshop as we allocate jobs to our technicians based on Labour times to maximize the efficiency of our workshop.

When a Labour intensive job doesn’t show up for example a Clutch or a Cambelt the technician that was booked to carry out that job has no work and not only is that a cost to the workshop but it also affects other customers that are waiting to book in for work as they could have used that slot.

Going forward we have made the decision to take a £50 deposit for all jobs that are expected to take over two hours which will only be refundable if the job is cancelled at least 48 hours before its booking slot.

This will allow us to book in other customers who are waiting for our Services.

We understand sometimes it is out of your control and you have to cancel but we hope you understand our position, this is a hard time for all small business’s.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

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.

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.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

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.

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.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Power Flex Suspension Bushes For This BMW Z4.

Suspension bushes on all cars go through tremendous stress on a daily basis, some manufactures have got the design right and the bushes can last the life of the car whilst other manufactures just didn’t quite get there!

One of the problems with BMW’s in general is the front suspension bushes. Most of the BMW range suffer with the front suspension arm bushes either failing or being so worn that it causes the car to wander on the road whilst driving and can feel unstable when braking.

Replacing the bushes with either after market bushes or genuine bushes does sort out the problem, but with the condition of the UK roads and the fact that most BMW’s come with low profile run flat tyres the new bushes can be worn out within a couple of years.

The solution on this BMW Z4 was to fit some Power Flex nylon bushes, these bushes are mainly used in Motorsport but can be fitted to road cars.

Watch this video to see just how much movement was in the old worn bushes compared to the new Power Flex nylon bushes.

On the Z4 replacing just the lower suspension arm rear bushes was enough to transform the steering from a loose discouraging feel to a nice tight direct feel that a sports car should have.

For more information on whether Power Flex bushes would suit your car or just for more information give us a call on 01332 205070

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Citroen Berlingo with ABS Wiring Fault.

A 2014 Citroen Berlingo came in to us with an ABS fault to be looked at.

First thing to do was carry out a diagnostic code read to see why the ABS light was on, the particular code for this Citroen Berlingo van related to an open circuit on the rear left wheel speed sensor.

We checked the actual wheel speed sensor for a fault but it checked out ok, next job was to check the wiring from the sensor back to the ABS pump.

Most of the wiring for the rear ABS sensors is hard to access as it runs inside the van. once we had determined that there was in fact a break in the wiring from the left rear sensor and the ABS pump (by checking continuity of the wires) it was time to start stripping the interior and physically check the wiring for a break.

After removing the passenger seats and lifting the carpets to access the wiring we noticed part of the raised carpet flooring had been trapping the ABS wiring loom between a raiser and the body and over time had rubbed through the wiring and caused it to short out against the body.

We repaired the wiring and and rechecked for continuity through the loom which we now had. Time to clear the stored fault codes and check for a wheel speed signal using the live data on our diagnostic scanner, perfect, the signal was good and the same as the rear right wheel, time to rebuild and road test.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Land Rover Discovery 4 Front & Rear Wishbone Replacement.

The owner of this Land Rover Discovery 4 decided he wanted to replace all four of the lower suspension arms as they had excessive wear in most of the bushes (common problem).

After a bit of research he booked it in with us to carry out the work for him.

Anyone who has tackled this job before will know its not a five minute job, especially when the bolts seize inside the bushes!

First thing we always do on jobs like these is to wire brush all the bolts and spray them with freeing oil in the hope to make life easier for us.

This did work on 50% of the bolts but there were several that no matter what we tried they needed to be cut out.

After replacing all the arms it was time for a full geometry setup as the arms had adjustments for Camber, Castor and Toe.

I must admit once all the work had been carried out the Discovery 4 drove perfectly, there was no more wandering at speed the steering was precise and not loose, it felt like it should do.

We did advise the customer to bring the Discovery 4 back after a few hundred miles so we could re-check the geometry once all the suspension components had settled in.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

Vauxhall Corsa D 1.2 (A12XER) Timing Chain Rattle.

We had this little Vauxhall Corsa 1.2 booked in with us for a ‘really bad engine noise’.

Once the car was in the workshop it became apparent very quickly what the noise was, the Timing Chain was rattling so bad we were surprised it hadn’t jumped a tooth and caused engine damage!

When we were stripping the engine down to put the Timing Tools in place we could see just how badly stretched the chain had become, the crank locking pin went straight in but both cam shafts were out by quite a lot.

There are several variants of the Vauxhall timing chain engines most of which requiring different timing tools which we have, 1.0 – A10XEP, 1.0 – A10XER, 1.2 – A12XER, 1.2 – A12XEL, 1.4 – A14XEL, 1.4 – A14XER, 1.4 – A14NET to name just a few.

Timing Tool A is for the Camshaft Position Rings, Tool F is for the Camshafts.

After removing the timing chain cover we could start to see what had caused the problem, the oil was very black and there was a lot of burnt carbon oil inside all the covers.

All engines require regular servicing to keep them in tip top condition but especially modern engines that run a timing chains rather than a timing belt, we are seeing more and more engines requiring timing chain kits prematurely due to a lack of servicing, poor quality oil or the wrong spec oil.

Once we had replaced the timing chain kit and re-aligned all timing marks it was time to clean all off the engine casings and refit, replace the oil and filter and refill the coolant.

When we removed the oil filter this gave us another indication of what had caused the problem, the middle of the oil filter had been sucked in, caused by the paper element of the filter being completely full of oil carbon and struggling to allow fresh oil through it, which in turn starves crucial parts of the engine of oil (timing chain) allowing them to wear, over heat and stretch.

On this particular car we advised the customer that over the next 20,000 miles they should have several oil and filter changes to help remove carbon deposits that we couldn’t see or get to whilst doing the job and this will help increase the life of their engine.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.

2019 Ford Ranger 3.2 Low Oil Pressure Light On After Service

We recently came across a problem in the Garage which we have not come across before, which was the ‘Low Oil Pressure’ warning light coming on after replacing the Oil and Filter on a 2019 Ford Ranger 3.2.

After searching on a couple of the Motor Trade platforms we use it seemed that we were not the first to come across this problem, but we spoke to our local Ford Dealer and they said they knew nothing about it.

There was apparently a technical bulletin which had gone out to dealers saying that if the oil and filter change was not completed within fifteen minutes this problem would occur due to the oil pump draining and not being able to re-bleed itself.

Personally we believe this is a poor design, when we drain the old oil from your car we want to remove as much of the old oil as possible (obviously some oil will stay in certain places of the engine) allowing the new oil not to be diluted with it.

In this particular case the only way we could bleed the oil pump was to flood it, we added five litres more oil than specified to bring the level inside the sump up to the bottom of the oil pump meaning it didn’t have to pull the oil up but just push it.

Once we had got the oil pressure up we drained off the extra five litres of oil, road tested the car and then re-checked the level.

Aarons Autos car service garage.

Your friendly car garage in Derby

Give us a call at Aarons Autos for more info.