Secondary Air Injection Pump Failure on V8's! Important!

[Stuffman]

I believe this is Slyfox



Edit: my bad. Should have PM'ed you before I bought mine

 

[slyfox75]

Fellas......im not Rutech I dont do this as a business.....thus mine are $45.
My email is in this thread and others multiple times.
Or you can PM me on here but I only get on a few times a week usually.
jeffcole75 at gmail

 

[gtb129]

Is this issue consistent with both v8 engine configurations? Pre-05s included? I've never seen anyone buy the kit for a pre-VVTI

 

[AuSeeker]

Is this issue consistent with both v8 engine configurations? Pre-05s included? I've never seen anyone buy the kit for a pre-VVTI

No you and I, which mine is a 2004 are safe from this issue :reddance:, it's an issue only with the newer V8!!

 

[gtb129]

No you and I, which mine is a 2004 are safe from this issue :reddance:, it's an issue only with the newer V8!!

I wish I could like this statement 100 times... I searched and searched and could never find a definitive answer. Thank you sir

 

[AuSeeker]

You're welcome Greg, I was just as relieved as you when I found out it was only the newer V8s!!

 

[BTay1]

08 4runner

Hey guys...lots of good information here. I've been lurking and learning for a couple years. I appreciate this site and all the information it provides...Thanks.

I've got 2 4runners, both 08, a 4.0 and 4.7. Based on searches, this air injection bypass will NOT work on the 08-09 V-8, but I see a poster above says he's had no issues with this bypass kit installed. I'll PM him for more info.

Any others have experience with this kit on an 08+?

 

[slyfox75]

The Bypass is for VVTI V8s. 05+
I have sent bypasses to a few people with newer(08+) V8s and they have reported no problems. I think the initial concern from this was from the Hewitt Tech design(which it appears he has fixed now according to website).

 

[BTay1]

The Bypass is for VVTI V8s. 05+
I have sent bypasses to a few people with newer(08+) V8s and they have reported no problems. I think the initial concern from this was from the Hewitt Tech design(which it appears he has fixed now according to website).

Thanks for confirming this will work on the 08+ model V8's. I'll send an email for purchase information.

 

[4OYOTER]

Does anyone know if the lastest 4th gen "ECM update" the dealers are doing has any effect on the AIP? The reason I ask is because there seems to be a general consensus on the Tundra forums that the bypasses will no longer work on later model 4.7s that have had the ECM updated at the dealer. Apparently it causes the AIP to operate at other times than just cold starts. I ask this because my service records say the dealer did my ECM update right before I bought my 2008 4.7 last year.

 

[Briandmozy]

purchased the bypass from SLYFOX. shipped quickly with everything needed for easy install. Any assistance needed from him will receive a fast reply with helpful info. Get the bypass and peace of mind.

 

[DoorDing]

The tundra update causes the aip system to run for a full second at every engine shutdown with will make the bypass ineffective. Not sure if the 4runner update does the same though. If you're not having any issues with the ecu, why bother to update it?

 

[4OYOTER]

The tundra update causes the aip system to run for a full second at every engine shutdown with will make the bypass ineffective. Not sure if the 4runner update does the same though. If you're not having any issues with the ecu, why bother to update it?

That's kind of out of my hands, as the dealer did it before I bought it.

 

[eremoy]

The pump in my 05 4runner just failed yesterday at 128k miles. I'm going to go with slyfox's kit. Should I call Toyota to document it too or is that a waste of time?

 

[LOSTR4]

That'd be a waste of time...just bypass it and know you won't be having problems anymore...granted, make sure your pump isn't stuck open first....

 

[Flyer]

I have a 2005 V8 with almost 140,000 miles. I'm thinking I should do the bypass kit proactively. I think I saw a write-up with pics on this thread but does it take ~6 hours. If so, it will probably take me 8-10, which is daunting in the sense that I'll forget what came off in which order and at the end, I may end up with some extra bolts. :biggrin2:

For those who have done this, was it pretty easy?

EDIT: I am not too mechanically experienced so pardon the dumb question- why not replace the faulty pump itself? Is that too complex or expensive?

 

[Atlanta_man]

pump is expensive
labor is 5x as much

 

[Flyer]

Makes sense. I was under the mistaken assumption (when I saw some picture that was put up) that the pump was easy to access and replace when doing this bypass procedure.

 

[eremoy]

I have a 2005 V8 with almost 140,000 miles. I'm thinking I should do the bypass kit proactively. I think I saw a write-up with pics on this thread but does it take ~6 hours. If so, it will probably take me 8-10, which is daunting in the sense that I'll forget what came off in which order and at the end, I may end up with some extra bolts. :biggrin2:

For those who have done this, was it pretty easy?

EDIT: I am not too mechanically experienced so pardon the dumb question- why not replace the faulty pump itself? Is that too complex or expensive?

6 hours?! I installed Slyfox's kit ($48 shipped) last Sunday night with a headlamp and a razor blade. It took about 10-15 minutes. All you do is remove a relay, install a wire, run the cable to the MAF sensor, cut one wire and splice in couple wires. You don't even need to solder anything.

If your's hasn't failed then the valves aren't stuck yet so you won't need the exhaust plates i'm pretty sure.

Replacing is pointless because the pumps are non-critical components that are expensive, buried in the engine and will probably fail again down the road.

 

[Flyer]

Thanks eremoy. I am not sure where I saw that while researching this but I appreciate your info. I'll order the kit you did, by emailing Slyfox.