How much does the thermostat jiggle pin matter? Replaced aftermarket thermostat without it with OE

[Chris142]

I can confirm that a 1/8 hole will slow down the warm up... made that mistake before.

It does not take much water flow to cool an engine with a properly functioning cooling system. Much less than you would think.

 

[slacktide_bitog]

Nope. Looks different than a stant or motorad.

aah ok ok

Anyway, Facet seems to make a thermostat for your Jeep that has a jiggle pin. Facet seems to be made in Italy. Part number 7.8204S. It's not listed for your Jeep on Rock Auto, but is listed in Facet's own catalog. Rock Auto does carry it at a fair price.

 

[Chris142]

aah ok ok

Anyway, Facet seems to make a thermostat for your Jeep that has a jiggle pin. Facet seems to be made in Italy. Part number 7.8204S

Who sells that brand?

 

[slacktide_bitog]

Who sells that brand?

just edited above post. Rock Auto has it

 

[Samrsnow]

The aftermarket stat will have small grooves around the piston that is supposed to do the same thing.they do...kinda. definitely makes it take longer to warm up.

The oe stat is no longer available for my Jeep so I'm stuck with longer warm up times.

Mopar still offers a thermostat for you TJ wrangler PN 52028186AC per my Starparts catalog.

 

[Chris142]

Mopar still offers a thermostat for you TJ wrangler PN 52028186AC per my Starparts catalog.

Inside the jeep box is a motorad stat. Already been there. It's junk

 

[Samrsnow]

Inside the jeep box is a motorad stat. Already been there. It's junk

I don't understand, are the mopars made my motorad now? I haven't checked, I have one in stock at my dealership I'll take a look at in the morning. If you're concerned about fakes just go to your local dealer with the number and have them open the box so you may inspect it. Online stuff is a gamble and we all know it.

 

[Chris142]

I don't understand, are the mopars made my motorad now? I haven't checked, I have one in stock at my dealership I'll take a look at in the morning. If you're concerned about fakes just go to your local dealer with the number and have them open the box so you may inspect it. Online stuff is a gamble and we all know it.

I did. I went to the local dealer and when I looked in the box it was a motorad. I left it on the counter. Prolly not enough sales for jeep to sell the original.

 

[Samrsnow]

I did. I went to the local dealer and when I looked in the box it was a motorad. I left it on the counter. Prolly not enough sales for jeep to sell the original.

Just looked at it, it does say motorad, made in Israel. does have the jiggle pin.

 

[Chris142]

Just looked at it, it does say motorad, made in Israel. does have the jiggle pin.

Yep. In the past I bought oem ones that were made in USA. I tried a motor rad one from the dealer a couple years ago and it failed after 2 weeks. Same with the motorad ones from AutoZone,Napa and orileys.

 

[oldhp]

1/8 is way too big. Will take forever to warm up

Was taught at age 14 to do this. 51 years and never a problem doing this. 4 cyl, 6 cyl, V8 never had a problem. Engines always warmed up to temp quickly with no coolant temp fluctuation.

 

[nicholas]

Was taught at age 14 to do this. 51 years and never a problem doing this. 4 cyl, 6 cyl, V8 never had a problem. Engines always warmed up to temp quickly with no coolant temp fluctuation.

Do you live in a cold climate?

 

[Yah-Tah-Hey]

If the manufacture used a thermostat with a jiggle pin, the that is what is what the replacement thermostat should have.

 

[akbrian]

Is it the 2002 Wrangler in your sig? If so, there is an OE Mopar thermostat listed for a 2002 Wrangler on Rock Auto, though it is $30

Some 2002 Jeep 4.0L, unfortunately like mine, have the older (1999-2001?) non-TUPY head with the very unforgiving thin casting. I've been told to be very careful bleeding the air out after a coolant change. Just in case that helps someone.