When to Replace Timing Belt?

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08-31-2010 | 03:13 AM

#21

archebald23

Junior Member

Joined: Jul 2010

Posts: 8

I didn't replace the water pump the first time I changed the belt on my old focus even if almost all the how to replace a timing belt manuals ive read suggested it should be done. That proved to be a costly mistake just 25,000 miles later.

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Last edited by archebald23; 10-26-2010 at 04:57 AM.

08-31-2010 | 07:11 PM

#22

TrevorS

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From: DE

Quote:

Originally Posted by JoeSpeed

Chain or Belt they must be replace at some point. Plus you don't want to wait until it breaks, cus you will need new valves, tie rod, etc...

I've read the 2AZ-FE is a non-interference design, so if the chain breaks it will just die. Still, yes, it makes little sense to wait for it to break.

PS. Yes, it's a chain, not a belt

Quote:

Originally Posted by ontarioScionxb

these cars have both. a timing chain which yes was stated b4. lifetime. but should be checked about every 60m to insure its good. Also has a serpentine belt (v-belt) which drives everything else. alt, steering, water pump, so on.

just so you all know.
im looking at infostream toyota right now. i like it, its alil better than our standard owners manuals.

take care

All cars have separate drive for the auxiliary equipment and the cams. That's the way engines are designed probably going back to the very first time an accessory was attached to an engine.

08-31-2010 | 07:24 PM

#23

TrevorS

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From: DE

Quote:

Originally Posted by archebald23

Depends on the car. My Eclipse 4G63 is 60K for the timing belt and every other change, the water pump as well. Unfortunately, it also seems to need a new hydraulic tensioner with each timing belt change

03-04-2017 | 02:21 PM

#24

ilbdarned

Junior Member

Joined: Mar 2017

Posts: 1

Quote:

Originally Posted by rickbreitenfeldt

The vehicle has a LIFETIME timing chain system. Same as tC and Camry.

The serpentine belt is check at 75,000 and 90,000 and replace at first sign of wear.

Also yes the Toyota engines are a non interference engine. That does not mean the engine would not be damaged on a failure of the timing system but it is not a certainty of being damaged like the Honda.

Your post was very confusing, you said the Toyota engines are non interference engines, but then later said that does not mean the engine would not be damaged.

Isn't that the whole purpose of knowing the difference between interference and non interference is the determination of, " if the pistons are going to hit and bend the valves" if there is a issue with valve/ piston timing?

If your going to post on here at least be clear if you even know what your talking about. Hope this list makes things clear, toyota engines are not all non interference.
Toyota
1.5L (1A-C, 3A-C & 3E) Interference
• 1.5L (3E-E & 5E-FE) Non-Interference
• 1.6L DOHC (4A-F & 4A-FE) Non-Interference
• 1.6L DOHC (4A-GE & 4A-GZE) Non-Interference
• 1.6L SOHC Non-Interference
• 1.8L Diesel Interference
• 1.8L DOHC Gasoline Interference
1.8L 7AFE, 4AFE, 4AF – Non Interference
• 2.0L Non-Interference
• 2.2L Diesel Interference
• 2.2L Gasoline Non-Interference
• 2.4L Diesel Interference
• 2.5L Non-Interference
• 2.8L Non-Interference
• 3.0L Inline 6 (Except 1998 2JZ-GE) Non-Interference
• 3.0L Inline 6 VVT-i (1998 2JZ-GE) Interference
• 3.0L V6 Non-Interference
• 3.3L 3MZ-FE V6 W/ V VTi – Interference
• 3.4L Non-Interference
* 3.5L V-6 Non-Interference
• 4.7L Interference