Problem with TJM Airtec Snorkel

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Cmab

Cmab

Joined
Jun 11, 2017
Threads
5
Messages
54
Location
Puerto Vallarta, Mexico
Got almost through with the install when I noticed 2 problems. Problem No. 1 is trying to fit a square peg in a round hole. I couldn’t do it in nursery school and I couldn’t do it today. The Airtec tube adapter is round and the OE Air Intake is almost square. See images. I guess I can cut it down and seal it flush to the inner guard. Problem No. 2 is a bit more challenging. The Airtec Adapter Tube cannot be lined up properly because of the two tubes seen in the attached photo. I don’t know what they are. Can they be removed and flexible hoses be used in their place and rerouted out of the way??

Help!

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The 2 tubes in question look like the AIP. Those can be relocated with flexible hose. Hold on to the OEM bits in case you ever want to smog the truck in CA. The AIP is technically part of the emissions system and altering it could make you fail visual inspection.

But then again, people are getting Aux tanks in here with no issue.
 
Thanks for reply Roy. Now I’m curious as to best new location for extending these AIP hoses. At their present location, level, wouldn’t they be prone to draw water if vehicle is submerged to that point? I know it is not very likely I would get to that point but what’s the point of a snorkel if something like this could be a problem?
 
Cmab said:
Thanks for reply Roy. Now I’m curious as to best new location for extending these AIP hoses. At their present location, level, wouldn’t they be prone to draw water if vehicle is submerged to that point? I know it is not very likely I would get to that point but what’s the point of a snorkel if something like this could be a problem?
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I relocated the AIP in my Tundra into the engine bay.

I put one of these at the end of the hoses too.

Uni Filter UP-107 1" Clamp-On Breather https://www.amazon.com/dp/B003CJOTSA/?tag=ihco-20
 
So I ended up relocating the AIP in the engine bay as well. It drove fine to work but on the way home it showed a solid check engine light along with a flashing 4LO indicator. I went all the way to the firewall with the AIP. Could that be an issue??
 
Cmab said:
So I ended up relocating the AIP in the engine bay as well. It drove fine to work but on the way home it showed a solid check engine light along with a flashing 4LO indicator. I went all the way to the firewall with the AIP. Could that be an issue??
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Well I just noticed that it is actually in Limp Mode. Flashing 4LO + Check Engine + TRC Off. What to do now??
 
Cmab said:
Well I just noticed that it is actually in Limp Mode. Flashing 4LO + Check Engine + TRC Off. What to do now??
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Anybody? Any ideas? I must add that I did downsize the hose from 1 “ to 3/4” to make the run easier. Could that make a difference?
 
I don’t know if that makes a difference but I didn’t reduce the ID of the hose when I relocated my AIP in my Tundra and I’ve never had any issues.
 
TonyP said:
A must? No, but it can save cash if your AIP takes a dump. Which it probably will eventually.

It works with LCs. Shoot them an email.
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Do the newer models not have this anymore? Or is there is no bypass kit for the newer ones?

I remember this issue from before, but was not really thinking about it. Is this even an issues anymore, or did Toyota finally resolve this?

Thanks.
 
options2 said:
Do the newer models not have this anymore? Or is there is no bypass kit for the newer ones?

I remember this issue from before, but was not really thinking about it. Is this even an issues anymore, or did Toyota finally resolve this?

Thanks.
Click to expand...

A dude I know got water in his 2nd gen Tundra AIP pipe and hosed his pump. The bypass saved him a few grand in repairs.

Yes, 200s still have two AIPs that can fail. Two pump drivers also, both that can fail.
Anyone that's put in a Slee compressor bracket has seen the two AIP drivers. They're by the brake master cyl, each about the size of a deck of cards. The AIPs themselves are below/behind the passenger headlight. You can see in the pic above the two pumps.

Is it common in 200s? Not at all.
 
TonyP said:
A dude I know got water in his 2nd gen Tundra AIP pipe and hosed his pump. The bypass saved him a few grand in repairs.

Yes, 200s still have two AIPs that can fail. Two pump drivers also, both that can fail.
Anyone that's put in a Slee compressor bracket has seen the two AIP drivers. They're by the brake master cyl, each about the size of a deck of cards. The AIPs themselves are below/behind the passenger headlight. You can see in the pic above the two pumps.

Is it common in 200s? Not at all.
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Thanks.

But I guess from looking at the site, there is not a bypass kit for the 2013 + models. Or at least not that I see.

Also.....interesting though about the water getting in to it. Good thing he had the bypass.
 
TonyP said:
It's appliciable to the '13+, they have a kit for it. I can't view the site at work but their customer service is pretty helpful if you want to email them.
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Not so fast! Here is a message and helpful (kind of) info from Becky at Hewitt.

Hi Craig,
Sorry to hear you are having troubles. We do not currently have a module for your LC if it is the 5.7L. The system was changed to also run when you shut the truck off and our current units only prevent it from coming on with a cold start. We are under development for a new module for those vehicles we don't have covered yet. We are compiling an email list for anyone that is interested in knowing when the new module is available, would you like us to add you to it? We are hoping to have something available early spring 2019 and I know that doesn't help right now but we are excited to have something soon.
Sincerely,
Becky

Now to elaborate on the water entering the AIP pipe. Seems pretty likely to happen if you are gonna get the most out of a snorkel. Right? I know only very few would readily submerge their vehicles up to that level but what is the point of a snorkel (Besides the cooler clean air intake on a daily basis) if you are going to leave that AIP pipe where it is??? So it really didnt hurt too bad having to remove that AIP pipe and reroute both AIP hoses as high as possible in the engine bay. And at that moment I also had the crazy idea of stubbing out two 1 inch nipples from the snorkel adapter tube to connect those hoses and thus draw from the max height of the snorkel. But no time for that to get back to work on Monday. Now that I have this problem with errors and limp mode apparently from the longer draw length of those extended hoses I am thinking just maybe the connection to the adapter tube of snorkel just may solve the problem. After all, connecting both AIP hoses to the side of the snorkel adapter tube would revert back to its original draw length. My only fear is that if it doesnt work, I just punched 2 holes in my new snorkel adapter tube.

Remaining doubts I have are:
1. Is that extra draw length of AIP hoses causing the errors?
2. Is the reduced AIP hose size from 1" to 3/4" causing errors?

I guess first step would be to upsize to 1" hose and see if that cures errors. If it doesn´t, consider shorter run. ANd if that doesn´t, consider connection to snorkel adapter tube which is going to take some courage.

Just for the record, I disconnected battery and everything has been reset. No codes. I will run for a while and see how it goes. Not expecting much.

Last question. Why do we f*!? with perfectly running vehicles????
 
Another detail occurs to me. How much do those AIP pipes/hoses draw??? Is it only at startup or a constant draw? If it is constant than I guess there is the risk of them sucking rain water entering the snorkel. Right??
 
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