Holden Problems

Plenty of cars suffer this problem as they age. Consider that every time the vehicle is used, one or more door handles is being operated. Throw in the fact that the quality of these Holden Captivas was a bit sketchy in the first place, and you can see why the years and duty cycles of the door handles can catch up with them. Fortunately, it's not a huge job to replace the handle and new handles are available form lots of outlets including online sellers.

The Captiva was not alone in this problem, and many makes and models have a history of door handles breaking. Again, it's usually through wear and tear and cheap materials in the manufacturing process at fault.

Air-conditioning systems are designed with various interlocks to prevent them being damaged by extreme conditions. For instance, if the refrigerant gas in the system starts to become depleted, it will also get hotter and hotter the harder you work the system. Eventually, the temperature of the system becomes too high and the interlock will step in and shut the air-conditioning down to prevent it becoming permanently damaged.

You need to take the car to an air-conditioning specialist who will have the tools and equipment to safely test the system to determine the problem. Then whatever is wrong can be fixed according to strict environmental regulations, which is why air-conditioning is not a DIY job.

A diesel that will turn over but not fire will often have a problem with its fuel system as the cause. You may need to check the fuel pressure and the pump itself, but other causes can be blocked or worn injectors and blocked or dirty fuel filters. A car with faulty glow-plugs can also be difficult to start from cold. But even things like a blocked air filter or something else fundamental to the car's operation could be the cause. And while it sounds simple, is there actually fuel in the tank?

If the solution doesn't present itself simply, the best advice is to have the car electronically scanned to check for fault codes the on-board computer will have logged.

I'm curious to know what happened when the hill-start assistance kicked in on the flat. Since this system holds the car on a hill so you can move off easily, it should deactivate as soon as you press the throttle to move. Which means, on a flat surface, you shouldn't be able to feel the system at all. Are you sure this is what's happening. Could the problem instead be a brake caliper that is sticking on, or a hand-brake that is dragging?

In any case, the hill-start system is controlled by sensors that detect that you're parked on a slope and then apply the brakes to stop you rolling back. If any of these sensors is kaput or not sending the correct signal back to the computer, the set-up won't work properly. Conceivably it could engage on the flat but, again, I don't know how you would know.

But the solution is a simple one; take the vehicle to a Holden dealer who will be able to figure out what's wrong and then fix the problem under warranty. Your car is covered by a five-year warranty, so make the most of it.

By the way, disconnecting safety gear is not the best way to go as it can (obviously) make the car less inherently safe and, in some, cases even render the vehicle technically unroadworthy.

The 1.8-litre non-turbo and 1.4-litre turbocharged engines in the 2014 Cruze will run happily on 91-octane petrol. The more highly tuned 1.6-litre turbo engine in the SRi, SRi V and Z Series models required a minimum of 95-octane fuel. There's no problem using 95-octane fuel in the engines designed for 91 fuel, but you probably won't gain anything in terms of fuel consumption or performance. The only thing that will happen quicker will be the emptying of your wallet.

There's no problem mixing 91 and 95-octane fuel in the cars designed to run on 91-octane petrol, but the 1.6-litre engine can be damaged by using anything other than a fuel with a minimum octane rating of 95.

The first thing to determine is whether the engine is actually getting hot. You need to find a mechanic who can tell the difference between a genuinely hot engine and one that is crying wolf. Most times, this will involve letting the engine idle until the warning light comes on and then checking the actual temperature of the coolant. This is usually done via a trusted thermometer (infra-red thermometers are great for this) checking the temperature of the coolant in the radiator's top tank.

If the engine really is hot, then you're looking for a mechanical problem. But if the temperature is within a normal range, then you need to start looking for a dud temperature sensor, faulty gauge/light or a problem with the car's wiring. This can be a lot harder to find than you might think, but driving around with a temperature warning flashing is no good either.

A wobble or vibration big enough to be felt through the floor that suddenly occurs for no reason, can often be traced back to a wheel balance issue. If the wobble is worst through the car's steering wheel, it's likely to be a front-wheel balance issue, otherwise we'd be looking at the rear wheels.

The generally terrible state of our roads at the moment is probable cause for this, and a decent impact with a pothole can be enough to dislodge the small weights on a car's wheel that make it balanced and, therefore, rotate smoothly. When you consider how fast a wheel is turning at 100km/h, you can imagine that a small imbalance can be enough to produce a big wobble.

The good news is that this is a simple fix. A visit to a tyre specialist will soon determine of a wheel balance problem is the issue and it can be fixed quickly and cheaply with the replacement of the small, lead weights which are stuck to the car's rim. While the wheels are being checked, it's a good idea to examine the tyres, too. A tyre with structural damage or a flat spot an also lead to this type of problem.

If this doesn't turn out to be the cause of the wobble, you then need to move on to other components like the driveshaft and universal joints and even suspension bushes and shock absorbers.

Here's a pointed question: Does your vehicle have an aftermarket trailer-brake system fitted? If it does, it's quite likely that the wiring passes through the cabin somewhere near where your leak is located. Unless this access hole is correctly sealed with the proper grommet, there's every chance water is getting in at this point.

Other likely suspects for this include roof mounted aerial holes, roof rack attachment points and even worn or damaged window and door rubbers.

This shouldn't be too difficult, as the 2003 Astra was only available with a petrol engine. If your car was a diesel-powered car (available in the next generation of Astra) the situation could be much more complicated. As it is, however, you should really only need to add fresh fuel to the tank, switch on the ignition for a few seconds to allow the fuel pump to prime the engine and then hit the starter. Don't crank the engine for long periods if it's a bit slow to start a this will drain the battery and potentially overheat the starter motor. Instead, try starting the engine in bursts of a few seconds at a time with a little time between to let things cool down.

Sometimes, however, the fuel pump won't appreciate being allowed to run dry and this can cause internal damage to the pump sufficient for it to need replacement. Generally, though, if you can hear the pump buzzing with the ignition on, the pump is working. In some extreme cases, the pump may not be able to prime the engine and the solution then is to spray a little starter fluid down the intake system to start the engine and hopefully allow the pump to catch up. But be warned, this is a dangerous process and should only be tried by somebody who knows what they're doing. It also involves undoing some of the trunking or piping to gain access to the engine's intake.

The other potential hazard with running a car dry of fuel is that you'll drag all the silt, rust and dirt that once sat harmlessly in the bottom of the tank through the engine and into the fuel system. So you would be well advised to change the fuel filters and check that no rubbish has entered the system.

You can buy replacement keys from locksmiths or online. They're not very expensive for the Captiva (unlike many cars which can cost hundreds) but you will need to have the key cut by a locksmith to make it work with the locks in your car.

If the remote control unit is working, you can fit the new key to that, or you can buy the whole unit with a new remote control. This new remote unit needs to be coded so that it talks to the computer in your car, but again, a locksmith should be able to handle this. If not, a Holden service centre will be able to code the new remote.