Nissan Pulsar Problems

If the noise sounds like a dull thud or knock from deep within the engine, then I have bad news. Something inside the engine is probably trying to get out. And if it does, the engine will be instantly turned to junk. The worse news is that it probably already is (junk) even though it’s still running, because the damage has already been done. From the sound of things, your engine is perhaps only a few seconds away from exploding expensively.

Noises like this are usually caused by wear in the bearings – typically the con-rod bearings – and while they can be fixed if you do so before the engine grenades, it will always be an expensive job. In fact, it would likely cost more than the actual value of a 2005 Pulsar itself.

The best advice, then, is to let a mechanic have a listen to see if it’s as bad as you’ve described. From there, I reckon a second-hand engine form a wrecked Pulsar would be your best bet if you’re determined to keep the car.

It would be worth having a mechanic check it for you. It could simply need a tune up, new plugs, plug leads, clean of the throttle body, or idle adjustment.

It could be an air leak, or an incorrect idle setting. Have a mechanic check it.

The best source of that info would be an automatic transmission mechanic or a wrecking yard specializing in Japanese cars.

It could be a fault with the computer, but I would have it investigated rather write it off as a computer glitch. You could have a problem with the cooling system, so I would have a mechanic investigate it.

Changing a clutch in any car is a big job and can easily cost the sort of money you’ve been quoted. And when that car is a front-wheel-drive vehicle, there are a lot of things to remove (like the driveshafts) before the gearbox can be removed and the new clutch fitted.

While I agree that the symptoms you’re reporting do sound like a worn out clutch, I’d like to know what else the mechanic thinks will be wrong. He or she may, for example, be budgeting for the removal and machining of the flywheel as part of the clutch replacement, That can easily add a couple of hundred to the bill. Also, where is the mechanic sourcing the new clutch? You may have found a replacement kit online for the $500 you’re quoting, but is it a quality part from a reputable brand or a no-name piece of rubbish from an internet clearing house?

If the gearbox won’t shift gears, then the vehicle won’t be able to accelerate any further once the engine has reached its maximum speed in the gear in which it’s stuck. That’s probably (I’m guessing) why the car feels like it won’t go any faster.

There are any number of reasons for an automatic gearbox to remain in one gear and refuse to shift. They start with low transmission fluid and go all the way up to a major internal failure or even a computer-related problem. There’s no real way to diagnose these possibilities remotely, so you really need to get the vehicle to somebody who specialises in automatic transmissions and get them to take a close look and diagnose the problem.

If it’s a major problem with the gearbox, your decision then becomes one of whether the vehicle itself is in good enough condition to warrant spending the money. A major job such as a new transmission and the labour to fit it could easily wind up costing more than the car is worth. Sometimes you’re better off scrapping the vehicle, cutting your losses and moving on to something newer and safer.

Try gently releasing the clutch while you’re holding the lever in the reverse position. It’s probably an adjustment issue, it could be a clip that’s broken, and nothing serious. I would take it to a mechanic who should be able to tell you exactly what is wrong with it.

It could be the battery; it could be the fuel pump. I had a similar problem that turned out to be a blown head gasket, so it could be worth doing a leak test.

You would like to think it would last the life of the car, but there are many reasons it might need replacing.