2005 4.7L timing belt replacement question.

[V8Man]

im a tech at a small independant that specializes in toyota, lexus, subaru and honda. the owner worked at a toyota dealer for 30+ yrs and got tired of ripping ppl off so he went out on his own in 2000 and ive been here for 10 yrs. but like someone said alot of the new stuff we wont see until the warranty is out or until a major problem arrises after 100000 miles. To the op i have no idea what they are talking about with coolant getting in the air pump. unless they are saying the a/c compressor is bad which is quite possible. the 2uz engine has no air pump. i agree to take the covers off and look for the timing marks they are easy to mix up as there is a line and a T mark every one sets it to the T and that is wrong. the cam gears get aligned to the line mark that is straight up. pull the 2 upper covers just a bunch of 10mm bolts and 2 10mm nuts

Isn't the air pump coupled to the front of the power steering pump? I've slept since I last worked on mine. I will check in the morning.

 

[satanos6668280]

Isn't the air pump coupled to the back of the power steering pump? I've slept since I last worked on mine. I will check in the morning.

none that ive ever seen on the v8 t4r or lexus

 

[hades]

My service history has this line

PUMP ASSY, AIR W/ TO176000F010 1

Iam pretty sure the air pump is under the manifold on 2005+ models.

 

[Herc]

The air-pump is buried under the manifold. It is a costly repair. Parts alone can run in excess of $2,000 and there is no after market options I found(albeit it was a quick desperate search). These same air-pumps were given extended warranties in Sequias and Tundras but not for 4Runners. :mmph:

To follow-up. I wanted to give the original dealer, Toyota of Grapevine, time to respond. I wrote a email (Dec. 20th) to their service coordinator and the response was a robo-email telling me when to bring my vehicle in to them. No calls or one-on-one correspondence which would have told them it's still at Toyota of Lewisville. So I called Toyota of Grapevine (Texas Toyota) left messages with service coordinator and customer relations liason on the morning of Dec. 27th. They have yet to return my calls. Pretty much giving me the finger at this point.

What sucks is I was ready to give the 4Runner to my niece. I.e. sell it to my brother for a song (which is why I took it in for preventive maintenance). And buy myself a Land Cruiser. Now I'll just sell it and look at Mercedes' SUVs instead.

 

[V8Man]

The air-pump is buried under the manifold. It is a costly repair. Parts alone can run in excess of $2,000 and there is no after market options I found(albeit it was a quick desperate search). These same air-pumps were given extended warranties in Sequias and Tundras but not for 4Runners. :mmph:

To follow-up. I wanted to give the original dealer, Toyota of Grapevine, time to respond. I wrote a email (Dec. 20th) to their service coordinator and the response was a robo-email telling me when to bring my vehicle in to them. No calls or one-on-one correspondence which would have told them it's still at Toyota of Lewisville. So I called Toyota of Grapevine (Texas Toyota) left messages with service coordinator and customer relations liason on the morning of Dec. 27th. They have yet to return my calls. Pretty much giving me the finger at this point.



What sucks is I was ready to give the 4Runner to my niece. I.e. sell it to my brother for a song (which is why I took it in for preventive maintenance). And buy myself a Land Cruiser. Now I'll just sell it and look at Mercedes' SUVs instead.

PM'd you!

 

[Derek G]

Damn that sucks! Even at a stealership where everybody is supposed to be trained well... or somewhat well. This is one of the reasons it urks me when I hear folks say "take it to the dealership instead of a local shop. You know it'll get done right!" When I had my timing belt done back at 95K miles, I had a smaller garage in Little Rock (Fosters Garage) do mine and did a great job!

Now I'm at 203K and VERY due for another belt change, and wouldn't trust any one here in the DFW area to do it. I'll just have to do my homework and find a place, or I'll bite the bullet and do it myself.

So which stealership did you take your Runner to?

I've had the Midas shop on Lovers do the ones in both my 4Runner and Sequoia for a VERY reasonable price and no problems at all. There's a former Yota tech working there that does them. Just ask for Junior.

 

[Derek G]

you got the wording backwards, the 4.7L is an interference engine, meaning that pistons and valves will hit if the timing belt breaks

Thank you, you're right. I got a little bassackwards there for a little bit.:bash:

 

[HokieRunner]

The air-pump is buried under the manifold. It is a costly repair. Parts alone can run in excess of $2,000 and there is no after market options I found(albeit it was a quick desperate search). These same air-pumps were given extended warranties in Sequias and Tundras but not for 4Runners. :mmph:

To follow-up. I wanted to give the original dealer, Toyota of Grapevine, time to respond. I wrote a email (Dec. 20th) to their service coordinator and the response was a robo-email telling me when to bring my vehicle in to them. No calls or one-on-one correspondence which would have told them it's still at Toyota of Lewisville. So I called Toyota of Grapevine (Texas Toyota) left messages with service coordinator and customer relations liason on the morning of Dec. 27th. They have yet to return my calls. Pretty much giving me the finger at this point.

What sucks is I was ready to give the 4Runner to my niece. I.e. sell it to my brother for a song (which is why I took it in for preventive maintenance). And buy myself a Land Cruiser. Now I'll just sell it and look at Mercedes' SUVs instead.

Depending on what exactly is wrong with the air injection system, you can trick it into not running. Not a fix for all air injection failures but helps with the majority. Simple resistor and relay fix or you can get a solid state module to basically bypass the system.

 

[TakeitApart]

Did they do the water pump with the timing belt? The reason I ask is that there is a tube with an o-ring on the water inlet housing, that if not seated right, will leak directly into the valley of the engine, right near the air pump and starter. It could be related, it could be coincidence.

As far as the compression issue; it's highly unlikely that you burnt a valve due to a t-belt being off a tooth or two, if that was the case. They will run almost perfectly with the belt off one tooth. Two teeth, not so much. If it was off enough to cause VTP (valve to piston) interference, you would have known instantly due to it not even running and a knock when cranking it over.

You'd be surprised; a broken t-belt isn't always a kiss-of-death for an interference toyota motor. They really have to be at such a high rpm when the belt breaks to cause the cams to not stop almost instantly, in the off lobe position due to the force of the valve springs.

All that said; they definitely should have run a health check to see what codes were present for the CEL.