nicks97z

I was wondering if anyone has had any issues with the heater not warming up the car after installing a 160 Thermostat? The temp gauge runs around 160 and should be enough for the heater to work, however it's mildly warm. I'm in Arkansas in 30-40 degree temps and feel that there might be a problem. I appreciate some insight from those of you running the same stat.

ss.slp.ls1

iTrader: (36)

Maybe you have air in your system or your heater core is clogged.

nicks97z

So, I'm guessing that there's not an issue with others? I'm tired of my fiance complaining about it being cold. I'll check the heater hoses to see if I have equal pressure on both as well as see if I can't get the air pocket out. Thanks.

fergymoto

iTrader: (129)

It probably needs flushed.

robsquikz28

iTrader: (246)

its cuz of ur tstat man you will only get 160 degreee heat out of ur engine which is damn hear cold when it gets to ur heater core and out ur vents....its cold put in ur old t stat and it will be better but then again spring is here dress warm

ss.slp.ls1

iTrader: (36)

Just because your T-stat opens at 160 degrees, doesn't mean that all of your coolant will stay at 160 degress. If that was true, with our stock 180* T-stat, the car would never go over 180 degrees, but we all know that our cars teater above the 210 mark when hot. With stock fan programing, you will still reach 226* (low speed fan comes on, high speed fan comes on at 235*) if you let it.

djjab57

iTrader: (17)

mine doesnt get warm with the 160 in, i put the 180 back in when i know its going to get cold.

shbox

My car gets plenty warm with the 160. I'd try flushing the heater core.

http://shbox.com/1/4th_gen_tech2.html#heaterflush

MTBSully

iTrader: (7)

my car can be at 150-160 degrees and still blow warm heat.

Either you heater core needs to be flushed or you have air in the system. I too have a 160* thermostat

$O$OE

iTrader: (14)

x3 on flushing

Formula350

iTrader: (3)

And a few of you think I'm am idiot



There's also a valve somewhere in our heater system (in the engine compartment) that apparently gets gunked up and doesn't allowed enough coolant to pass through the core. I have the same problem with luke warm heat, but I haven't bothered since my cars been out of commission since summer :\ Shbox may be able to shed some light on where it's actually located.

Otherwise bleed your coolant system (that's what the few bleeder screws are for) or give it a flush.

ThoR294

iTrader: (6)

make sure you bleed the system well. **** just doesn't randomly break after u install a tstat

shbox

The only "valve" is for flow control (restrictor) in one of the heater hoses. It is not adjustable. Some people run without it.

#13 in this diagram.

Formula350

iTrader: (3)

Been over a year since I read the thread talking about it, and I'm slightly mashing info with my old TPI that had a vacuum valve in the heater hoses.

Point is still the same, it gets gunked up and restricts even more Thanks for the pic too, I wasn't sure where exactly it was at. That the same for 93-94?

1995blacktattop

iTrader: (2)

i had a similar problem for quite some time (although on the stock t-stat, i've never run a 160) and then had to replace my radiator due to a small leak last spring. after the radiator was replaced (and i think they flushed the system too) the heater works fine

shbox

It's in the same place.

bombebomb

I need to do this, but I have been putting it off. I should of done it when the engine was out, all well. I will do it sometime soon.

nicks97z

I appreciate everyone's help. That's why ls1tech is the best forum ever.