Secondary Air Injection Pump Failure on V8's! Important!
- Thread starter Billynath1988
- Start date
Atlanta_man
New member
Not worried about anything. Rewind and Read carefully. I answered two questions.
Well, sorta dodged the second one...
CharlieC67
New member
Air Injection Pump Failure
Billy Nathanson. I also have injection pump failure on my 2009 T4R. The Toyota assistance line informed me that it will only extend warranty on Sequoia and Tundra with certain VIN numbers. I have requested that a supervisor call me back but wonder if there is any additional reference information that could help Toyota acknowledge that this warranty was extended to the T4R at least in your instance. Any help or info greatly appreciated.
Thanks
Billy Nathanson. I also have injection pump failure on my 2009 T4R. The Toyota assistance line informed me that it will only extend warranty on Sequoia and Tundra with certain VIN numbers. I have requested that a supervisor call me back but wonder if there is any additional reference information that could help Toyota acknowledge that this warranty was extended to the T4R at least in your instance. Any help or info greatly appreciated.
Thanks
Billynath1988
Senior Member
what they told you is true, however I do suggest you follow through with the phone calls so that its documented. However in my case, I did not have any work done by the dealer. SLYFOX75 sells a kit that is cheap, easy and painless to install. Took me about 10 minutes. The problem has been solved since.
bergs
New member
I have not had the same luck with the bypass since one of my valves is stuck (open?) so removing the intake is my next step as block off plates would be much more difficult considering the risk of breaking the hardware on the flanges.
I will say I don't see how this ends up being a $3000-$4000 repair. Intake comes off in a couple hours...
Also, thank you to Jeff (slyfox75) for the level and of support you have provided over the last few days. Even though my situation did not work out as hoped, I have been inspired to dig past the intake manifold and log the repairs
I will say I don't see how this ends up being a $3000-$4000 repair. Intake comes off in a couple hours...
Also, thank you to Jeff (slyfox75) for the level and of support you have provided over the last few days. Even though my situation did not work out as hoped, I have been inspired to dig past the intake manifold and log the repairs
What a great forum.
Been lurking on this site for several months before finally purchasing a '05 T4R V8. Would never have known about this issue without this forum and most likely would have ended up paying $1000's to fix. It sounds like if it hasn't happened yet it eventually will.
Purchasing the bypass today before this issue surfaces.
Thank you!
Been lurking on this site for several months before finally purchasing a '05 T4R V8. Would never have known about this issue without this forum and most likely would have ended up paying $1000's to fix. It sounds like if it hasn't happened yet it eventually will.
Purchasing the bypass today before this issue surfaces.
Thank you!
I bought an 05 gx470 recently and this went out. Lucky for me carmax is fixing with new parts...
update. Carmax still has it! They said this is the first one they have ever done so they are being extra careful to get it right. I feel extraordinarily blessed that this thing went out during my 30 day warranty with carmax. And on top of that carmax said since they've had it for so long they are going to give me another 30 warranty.
update. Carmax still has it! They said this is the first one they have ever done so they are being extra careful to get it right. I feel extraordinarily blessed that this thing went out during my 30 day warranty with carmax. And on top of that carmax said since they've had it for so long they are going to give me another 30 warranty.
Last edited:
bergs
New member
I was not able to get the valve to unstick so I've gone down to removing the intake.
Once I began to trace the flow of the secondary air system, I wondered, does it stand to reason that the two vaccuum lines I'm pointing at which lead up to the two sensors (left side of pic) can be blocked and will offer the same results as installing the bypass plates?
Once I began to trace the flow of the secondary air system, I wondered, does it stand to reason that the two vaccuum lines I'm pointing at which lead up to the two sensors (left side of pic) can be blocked and will offer the same results as installing the bypass plates?
Attachments
bergs
New member
Learned some interesting things during my repairs and after my most recent post in this thread. Got a plane to catch right now but I'll work on getting something written up.
My only advice is, get the bypass done before your pump makes a bunch of noise because there's no guarantee of getting the valve to straighten itself out.
My only advice is, get the bypass done before your pump makes a bunch of noise because there's no guarantee of getting the valve to straighten itself out.
Been lurking for a while as well.
Bought my 05 T4RV8 last summer. Sunday afternoon I got the code when starting the truck for the first time that day. Noticed the vacuum cleaner sound on Saturday by pure chance and after digging through the search feature came across this thread.
I guess mine is stuck closed as there is no drop in performance only the CEL and VSC TRAC lights.
With that being said, would the solid state bypass module only be a good solution or should I also go ahead and buy the plates as well?
Bought my 05 T4RV8 last summer. Sunday afternoon I got the code when starting the truck for the first time that day. Noticed the vacuum cleaner sound on Saturday by pure chance and after digging through the search feature came across this thread.
I guess mine is stuck closed as there is no drop in performance only the CEL and VSC TRAC lights.
With that being said, would the solid state bypass module only be a good solution or should I also go ahead and buy the plates as well?
Billynath1988
Senior Member
just the bypass .. then your good to go
shahsmerdis
New member
Can you take them to small claims ? Worst case they don't show. And if they do they are going to out lawyer you. But in the off chance they don't get someone there you will present your case if you can gather the data and recording them saying yes 4runner is affected but we aren't doing it.
bergs
New member
Pictured is what my control valve looked like. Based on how the foam broke down I described it to slyfox75 as heavy pancakes with syrup that has sat on a plate for hours. Makes sense that some valves could stick closed.
Once I have time to do a write up I'll post a link in this thread. The foam is almost like weather stripping but with larger pores, if that makes any sense.
Once I have time to do a write up I'll post a link in this thread. The foam is almost like weather stripping but with larger pores, if that makes any sense.
Attachments
Billynath1988
Senior Member
good luck with that..
so you think that foam was part of the valve that eroded/corroded/broke down over time or that is some "growth" or buildup over time that found a home in the valve seat area? Thus making seal not work? if that is case you probably can't just open them up like you did(albeit a PITA) and clean them and reassemble? Thanks for pics.....worth 1000 words.
bergs
New member
The foam is inside that control valve body though I'm unsure why it is used....maybe for a filtering effect or perhaps for sound damping from the pump? No idea.
It is my belief that, since my truck sat for a week while I was traveling, the foam was already broken down inside the valve body and it was only a matter of time. It didn't grow, it broke down and was pushed through the valve on that first startup. The small area that is free of foam is, what I imagine, the only available flow path which caused the pump to overrun and create the shop vac noise that many hear during this type of failure.
The resulting engine lights were due to the sensor (attached to the valve) seeing some level of back pressure.
It is my belief that, since my truck sat for a week while I was traveling, the foam was already broken down inside the valve body and it was only a matter of time. It didn't grow, it broke down and was pushed through the valve on that first startup. The small area that is free of foam is, what I imagine, the only available flow path which caused the pump to overrun and create the shop vac noise that many hear during this type of failure.
The resulting engine lights were due to the sensor (attached to the valve) seeing some level of back pressure.
BOFFROAD
New member
I just finished installing my relay for the air injection pump. I got it from slyfox75 on here and the installation was very easy and it works great. The instructions that are included are right on and easy to follow. I am so happy I didn't pay the $180 for the plug n play kit online when this kit doesn't take long at all to install. I started it up after it has sat for a day and no vacuum noise was heard, however, the engine did rev up high which I thought was odd. Then I realized it was my foot wanting to here 8 cylinders roar again.https://vimeo.com/143200528
Similar threads
