Rear Heater Delete/Coolant Line Cleanup

[TerraNerva]

As I understand it, it only injects or pulses air on cold starts and deceleration, and even then only dilutes exhaust with fresh air. Mine came out this past weekend, an I'm about to upgrade the cooling hose rerouted around it to the hard pipe from a 95-97.

 

[RFB]

I use to spend a lot of time in Mammoth. 20ft of snow on average and negative temps

Joey do you have the OEM delete hose? U said youd look.

 

[LandCruiserPhil]

I'm currently having a problem with excessive heat on the front passenger side along the inner side, sort of next to the seat and the center console. I have been assuming it's the rear heater lines. Is all of the above necessary to only delete the rear heater lines? Or can I (or rather my mechanic) just bypass those lines and remove them?

Removing the hard lines are extremely difficult as I have done it.

 

[Will Van]

I did take a closer look at PAIR and I am getting the itch to give that a dirt nap. Is there any cold weather reason why it's there, or is it all smog malarky?

Just smog malarkey. Having a little more room in the engine bay is enough reason to delete it for me. Plus, you can move your O2 sensors to the old PAIR ports on the exhaust manifolds. Much easier to reach and service.

 

[80t0ylc]

I'm currently having a problem with excessive heat on the front passenger side along the inner side, sort of next to the seat and the center console. I have been assuming it's the rear heater lines. Is all of the above necessary to only delete the rear heater lines? Or can I (or rather my mechanic) just bypass those lines and remove them?

The excessive heat is not coming from the heater lines, it's a FZJ80 patented feature...lol. Shotgun is the hottest seat in the rig. On the outside you got the cats and on the inside you got tranny & transfer that can seem almost as hot as the cats on a highway trip when you're running 65+ for hours on end. I imagine some days you could put one of those manifold taco warmers under the seat and do almost as well as in the engine compartment. I think this is why a cold A/C is so desirable.

 

[NLXTACY]

Joey do you have the OEM delete hose? U said youd look.

Yeah, sorry. So I've had these sitting here doing nothing in a box for a rally long time. I just never committed to putting them on the site. I guess I shouldn't have forgotten about them.

BTW the part number is 87245-60420

 

[LandCruiserPhil]

@RFB the hose on its way is not the same as part as @NLXTACY uses. Maybe he can post up a picture for comparison?

 

[RFB]

@RFB the hose on its way is not the same as part as @NLXTACY uses. Maybe he can post up a picture for comparison?

ty

 

[RFB]

Yeah, sorry. So I've had these sitting here doing nothing in a box for a rally long time. I just never committed to putting them on the site. I guess I shouldn't have forgotten about them.

BTW the part number is 87245-60420

oh my bad i ordered one already I have to do this before another noreast witer hits those pipes under the truck arent looking to good.

 

[LandCruiserPhil]

oh my bad i ordered one already I have to do this before another noreast witer hits those pipes under the truck arent looking to good.

You will love the new found storage under the passengers seat

 

[RFB]

I use to spend a lot of time in Mammoth. 20ft of snow on average and negative temps

Joey can you post up a pic of your shutoff valve, thats a great idea.

 

[alia176]

Since I'm "working" at work, can someone post up a non deleted mess on the firewall for a '95-'97? Just curious what the "before" looks like!

 

[NLXTACY]

Joey can you post up a pic of your shutoff valve, thats a great idea.

 

[graham5david]

As I understand it, it only injects or pulses air on cold starts and deceleration, and even then only dilutes exhaust with fresh air. Mine came out this past weekend, an I'm about to upgrade the cooling hose rerouted around it to the hard pipe from a 95-97.

Removed mine yesterday. Did you purchase a longer bracket for the throttle cable or fabricated and extension?

 

[TerraNerva]

Removed mine yesterday. Did you purchase a longer bracket for the throttle cable or fabricated and extension?

I did both. I made a temporary bracket extension while the part was on order, and installed it once it came in with the new pipe. In hindsight, my temp fab would've worked fine, but new part is in now. If I recall, the accelerator bracket is a Lexus part and kinda scarce, but was only 12 bucks or so. My Toyota Dealer found one in Cali and at the time there was only 3 in the Toyota parts system. I'm sure there are other ordering options on the interweb. Could be in my head, but my idle seemed to improve with the PAIR cleanup, less RPM fluctuations and goes to ~650 quickly on warm up. Since PAIR system runs on start up and decel, or is supposed to, I can see where it helped idle.

 

[Will Van]

Removed mine yesterday. Did you purchase a longer bracket for the throttle cable or fabricated an extension?

I used the ‘95-‘97 style throttle cable bracket. I’ll try find the Toyota PN.

 

[graham5david]

Thanks guys. Next project will be removing all of the excess cooling lines .

 

[Will Van]

The Toyota part number for the late-style throttle bracket is PN: 78185-60040.

It’s discontinuted, but you can find them used.

 

[graham5david]

The Toyota part number for the late-style throttle bracket is PN: 78185-60040.

It’s discontinuted, but you can find them used.

Damn .I ordered the wrong one .No biggy .I will find one

 

[DanMedeiros]

I just deleted my PAIR system this weekend and have the 95-97 hard pipe ordered and I've already done the rear heater bypass and bypassed the EGR. My operating temp is down considerably from the minor mods I've done thus far, down to about 185 from nearly 200. Being relatively noobish to the 80 engine on my '94, this is first I've heard or read about simplifying the TB coolant lines. Can anyone comment about the benefit, other than the obvious, of deleting this portion? What's the purpose of the TB cooling lines? I live in the South, not 'that' cold in winter, but I'm all about eliminating unnecessary connections and potential leaks.

OK I feely like a dummy, I just did this project but what is the "TB"