engine running too cool *solved- installed non failsafe tstat

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engine running too cool *solved- installed non failsafe tstat

Reply #45 – February 04, 2016, 01:36:04 PM

The outside air comes in through the cowl vent over on the passenger side....not so sure if on an EATC animal there's any kind of recirculation of the cabin air though..

engine running too cool *solved- installed non failsafe tstat

Reply #46 – February 04, 2016, 02:19:47 PM

Quote from: ThunderbirdSport302;453659

The outside air comes in through the cowl vent over on the passenger side....not so sure if on an EATC animal there's any kind of recirculation of the cabin air though..

According to the EVTM diagram, the EATC will recirculate air from the cabin, so there's a door there somewhere. Sounds like testing whether or not that actuator is working might help.

engine running too cool *solved- installed non failsafe tstat

Reply #47 – February 04, 2016, 06:46:39 PM

yes, there is a door,,, you simply reach up on the right hand "wall" of the duct housing and its right there.

from left to right.

directly behind your center EQ or storage pocket , on the "TOP" of the duct there is an internal louver that pics floor or vent air.
directly or sorta directly behind the power trunk button there is a louver that moves synchronous to the temperature you chose
directly to the far right hand side of the duct the very end there is a door that picks cabin air. Mine opens up when I pick defrost, remains closed in all other settings.

engine running too cool *solved- installed non failsafe tstat

Reply #48 – February 04, 2016, 06:50:30 PM

in my case all the actuators are moving when I change settings from this to that yada yada yada...

update

outside air was 37degF
with vent selected
with medium heat selected
with temp set to max heat
vents produced 96deg air

so with this update combined with the other previous post I gave, you can see how cold I must be getting especially with its in the 20's and teens outside.

Bo, I gotta find that port your talking about.

engine running too cool *solved- installed non failsafe tstat

Reply #49 – February 04, 2016, 06:55:19 PM

Quote from: ThunderbirdSport302;453659

The outside air comes in through the cowl vent over on the passenger side....not so sure if on an EATC animal there's any kind of recirculation of the cabin air though..

Ill go look at my son's car,, its torn down so I might find what your talking about.
the hole or path will be there regardless of it having eatc or not I would assume especially since these cars are all stamped out the same.

engine running too cool *solved- installed non failsafe tstat

Reply #50 – February 04, 2016, 09:44:20 PM

WOW!! found it,, its a SNORKLE !

so,, I covered it up and ..................

NO CHANGE.

I do feel guilty of forgetting to mention something though....
the last tstat I purchased did not have the tiny fail safe hole so,, I drilled one in about 3/16'' of an inch. that shouldn't really be a problem though.

I think ill remove the restrictor out of the supply pipe.,,, and perhaps toss in a 195 stat

engine running too cool *solved- installed non failsafe tstat

Reply #51 – February 04, 2016, 10:29:56 PM

WOW 3/16 inch??? My truck wouldn't heat because the PO drilled three 1/8 holes in the stat... I replaced it with one that has no weep hole at all, heats now...

engine running too cool *solved- installed non failsafe tstat

Reply #52 – February 05, 2016, 01:06:08 AM

Yeah, was gonna say that most very likely, the manual control cars and the EATC equppied cars will be indeticl in regards to the cowl stamping for the air inlets.

I'd also be willing to wager the cost of a 195* t-stat that the 195 t stat will likely be a difference maker.

I had (still have it, but the transmission said "piss on you" 3 years ago) an '88 Chevy truck. Got to where the heat was lukewarm at best, and on cold days/nights (20* or less) it wouldn't even blow but cool air, so we flushed the radiator and slapped in a new stat (195) and after that it would drive you out it would get so ed warm. There wasn't a before and after difference in the gauge, and the hoses were definitely warmer to the touch after, so perhaps the old coolant wasn't worth a and the stat was junk..who knows, but it sure made it work much better. Now about that trans......

engine running too cool *solved- installed non failsafe tstat

Reply #53 – February 05, 2016, 01:11:59 AM

Sometimes the weep hole is a tiny knick in the edge of the valve. Hard to see unless you hold it up to a light.
It is there to let the air out as the coolant rises in the block when you are filling it.

engine running too cool *solved- installed non failsafe tstat

Reply #54 – February 05, 2016, 01:18:22 AM

I'm gonna check my vent temps, just for fun.

engine running too cool *solved- installed non failsafe tstat

Reply #55 – February 05, 2016, 01:50:18 AM

22.5°f ambient temperature. After 15 mins of idle time and 2 SPD Taurus fan on high I get 136.7°f with vents set to high and with Taurus fan on low and heater fan set to low I get 153.4°f.

Unknown mileage on heater core, but it is at least 5 years old. Radiator is either original or very old. It had a tree grown between it and the condenser when I bought the car. 329.5k miles give or take.

engine running too cool *solved- installed non failsafe tstat

Reply #56 – February 05, 2016, 01:58:33 AM

My last tbird never got warm. Guage read n in normal, but a 25 minute drive with 2nd gear only at 55mph (burned up trans) was how long it took to get some heat out of the vents. At idle it wouldn't even defrost the windows. After swapping from the 180° to a 195° thermostat it took less then 5 minutes of driving to get face melting heat.

Gotta remember though, this was 2nd gear at 55mph. Probably near 3k rpm's. This burned up trans is why I did the t-5 swap. My buddy wrecked his mustang, rental car side swiped him. He wanted to upgrade from a 2.3 to a gt when he got the insurance check and couldn't find one. I talked him into a 87 bird which he bought for $400 with the blown trans. The idea was a h.o. swap and t-5. Instead he decided to junk the car for $350 and use the rest of the check to enroll in community college. I bought the car off him for $400 trying to help him out and planned on hanging onto it until he wanted to work on it, then his father died and he inherited a new nice car so he didn't want it back.

engine running too cool *solved- installed non failsafe tstat

Reply #57 – February 05, 2016, 06:25:25 AM

Quote from: softtouch;453680

Sometimes the weep hole is a tiny knick in the edge of the valve. Hard to see unless you hold it up to a light.
It is there to let the air out as the coolant rises in the block when you are filling it.

I remove the heater hose on intake(behind T-stat) or at core, results will be same and probably a lot better... If there is no movement into the radiator(and there is gonna be with a 3/16 hole in it), the pump can better force the coolant into heater core... Plus temp will rise far faster than with hole, took my truck 30 minutes highway to finally make heat and never got as warm as I'd like... I originally thought the T-stat was partially stuck open...

engine running too cool *solved- installed non failsafe tstat

Reply #58 – February 05, 2016, 10:30:39 AM

Quote from: jcassity;453676

WOW!! found it,, its a SNORKLE !

I do feel guilty of forgetting to mention something though....
the last tstat I purchased did not have the tiny fail safe hole so,, I drilled one in about 3/16'' of an inch. that shouldn't really be a problem though.

3/16" hole? That might be an issue. With that big of a hole the thermostat can't close all the way. In other words coolant is always flowing, even with the thermostat shut. Replace that thermostat with a 195* unit and do not drill any holes in it. I never drill any holes in thermostats I install and I've yet to have an issue bleeding the cooling system of air.

engine running too cool *solved- installed non failsafe tstat

Reply #59 – February 05, 2016, 04:45:38 PM

,,, 3/16'' is huge,,, lol
I meant 3/32''

either way every tstat that has that fail safe also includes the tiny dingle berry check valve thingy which I don't have.

ok,, what all my past tstats have in common,,, I drilled a 3/32'' fail safe hole because I fell like I lessen the odds of blowing a hose by having one. with as much travel as I do, I like the reduced risk when far from my shop.