Heater Control Valve Delete and Questions

[Me&my86MJ]

I am about to head to parts store to grab some bulk hose to do heater control valve delete and wanted to know if the hose I am pointing to at in picture needs replumbed.

 

It seems to run from thermostat housing into front of Intake manifold and right out the back of Intake manifold and into heater control valve.

[Jeep Driver]

Take it from the back of the manifold straight to the inlet of the heater core do not bypass it your temp sensor is in the manifold and that's what the ECU reads for temp it's important

[Me&my86MJ]

I know it is not a great picture, but is this said temp sensor? 

 

Also if I get newer style thermostat housing with temp sensor bung and temp sensor, could I bypass it then?

[Jeep Driver]

I moved my temp sensor so I guess you can too

The concept of the heated intake is to heat the throttle body so that the throttle plate is not ice up that may be true and airplanes but it's not something you have to worry about it's just not true mine doesn't ice up

[Me&my86MJ]

What year & model did you get your thermostat housing from?

[Jeep Driver]

Mine is correct for the 88 I'll post a picture and tell you what I did when I get home shortly

[Me&my86MJ]

Thamk you and Cool I just got back from getting bulk hose

[Jeep Driver]

I ran a 1/2" pipe along what would have been the fuel rail on a MPI engine, at the end of the pipe I made a T, one side is a nipple that points to the heater core and the other side is for the temp sensor to the ECU. 

 

At the stat housing I have a switch for the fan. The original and appropriate housing has a threaded location for something, odd and fine thread, just a cap/plug, this needed to be drilled and tapped for 3/8 NPT for the switch. If you are going this route you need to be careful not to drill into the stat section of the housing. 

 

If you are going to use the 4.0 housing, later model, it should already be tapped for 3/8 and all you'll need to do is extend your sensor wiring. 

 

Your stock set up should run better without the heat in the manifold, let us know if that's the case, I'm curious. 

 

I'd find a stock OEM housing if you can, the aftermarkets are not quite as skookum. If you want the hard to find OEM for the 2.5 I have one on ebay. 

 

 

 

 

[Jeep Driver]

I'm not suggesting you buy this from me, I'm just pointing to it.........pics show the differences between this one and the one you have.

 

https://www.ebay.com/itm/283080943799

[Me&my86MJ]

Nice and thank you for your help. I just did hoses and hcv delete for now to keep it simple. 

I always though that sensor in thermostat housing was cts, didnt even think e fan, as mine has mechanical fan clutch.  Definitely on my list of upgrades I would like to do.