My 1998 Toyota Landcruiser is making a severe rattling/ticking noise from underneath the vehicle as I accelerate at speeds below 25mph. No performance issues just annoying to listen to. Seem to get worse if I am using air conditioner.
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This could be caused by several things: (1) Sensor is bad & ya they can and do go bad. (2) Your shocks may need to be replaced. (3)you would want to diagnose if you have a problem with your AHC.
Unfortunately, the only test I know of is to check if your globes are bad via the "Height Test".
I have no way of knowing whether the other components are bad or if my ride is standard / okay. I just have a gut feeling that it can be improved. At worse, you'll be extending the life of your AHC by reducing wear on it. AHC height test.
Put vehicle in LOW. Mark fluid level in AHC reservoir.
Put vehicle in HIGH.
Number of graduations (ticks) on the reservoir from LO to HI should be at least 7. If less, your globes are shot and it's very expensive to replace.
sounds to me from the brief description like you have either a water pump rattling, or a timing chain coming slack. Is the noise coming from the alternator? Never grease pulleys, ever. also the stop squeak spray is bad for your belts. Don't know why they even sell it. If you listen carefully you may be able to pin point the rattle. Is this a tick tick tick, or a rattle rattle rattle? Does sound like a water pump rattle or timing chain slap though. Hope this helps
Lifters generally make a tick, tick, tick noise. If you have a low tone knock, you may have more severe issues, or what you may have is heavy carbon build-up on the pistons, contacting the cylinder head(s). What I suggest first is to use fuel injection cleaner and add it to the fuel tank a few times. You can go to your local part store and see what other products they have, such as "Seafoam," to assist in carbon removal. Extreme conditions may actually require the removal of the cylinder head(s) to gain access to the top of the pistons to physically scrape the carbon from them.
3 chains ONLY (1 chain from the crank to idler sprocket/ 2 from idler sprocket to cams). This ticking noise are usually associated with poor oil flow through the upper part of the engine or sticking lifters. If this vehicle has over 80k miles, have the oil pan and oil pick-screen cleaned!! If the problems not severe yet, it will go away!!
If this is a US production vehicle it is not a 2005.
Production stopped on the Axiom in 2004.
If you have a 2004 Axiom with a 3.5 Direct Injection engine it maybe due to low oil level. Check the oil and make sure it is at the correct level. Low oil level can cause the camphasers to rattle and cause engine damage. The phasers are only activated when the vehicle is in gear so you may not hear the noise when in park or neutral. Also maybe caused be loose campulley bolts. Severe engine damage may result if this is the case. Have it inspected soon to avoid damage.
The ticking sound is probably an out of adjustment valve.This can cause performance problems if it is severe enough. Go to www.georgebelton.com/6g.civic.tech/valve.clearance/index.php for step by step instructions w/ detailed photographs for this repair. The timing belt is one of those type of things that works 100% or not at all. At 126,000 miles I recommend having the belt(s) replaced. It is fairly inexpensive to have done and will extend the life of your vehicle 2 fold. If you belt fails it will probably destroy your motor so it is money well spent. Good Luck!!!