2nd temp sender location

got a quick one. want to install 2nd temp gauge while retaining function of the original. someone said there is a location on the back of the intake. can someone tell me where exactly to look and what is involved to get to it. are there any other places to tap a gauge into?

5.0GT said:

you could just go to a hardware store like Home Depot and just pick up a T-fitting that will allow you to use both of the temp senders in the same place, and they should have correct readings.

Hope this helps,
Chris

Click to expand...

that would be the easiest, but i thought for a cooling sender, you needed to have the probe be in the coolant flow. with a T fitting, there would be an alcove of coolant that is not in the flow, and neither gauge would read properly. is this right? please let me know, cuz it would be easy to do this, if my concerns above are not valid.
thank you for the input

MUSTANG5L5. awesome pics and description. even stupid me understoood that. i really appreciate it. (mike, i think you may have answered the same question for me b4, but i wasnt sure where the plug was, hence this post.)
honestly, i havent looked yet (waiting for daylight tomorrow). what is involved in taking the plug out? what does the plug look like? with my luck, i'd remove the wrong thing
i really appreciate everyone's responses. i have been trying to get this for awhile, but w/o pics and detailed description, i'm too dumb to figure it out. i will hook it up the same way you did.
last question. last time i did a temp gauge (years ago), it was a mechanical gauge (i know you get what you pay for, but i cant afford expensive gauges. this is a reason why i want 2 gauges for peace of mind on one fritzing). would electrical or mechanical be better? im gonna find the plug and then go buy gauges.
thanks again everyone. proving once again, this forum rocks

hey guys. as i sometimes do, i am wirting a follow up for future searchers. this is what worked for me.
there is a brass or copper four sided plug a little towards the drivers side of the PCV valve, on the back (firewall side) of the lower intake. i couldnt find any wrench to remove it. i took the upper off and still could not budge the plug with an open end wrench (seized in there). i took a relatively small (~24mm) 1/2 inch socket. put a 1/2 to 3/8 adapter on and then some extensions (most of my extensions are 3/8). the thing is, put the adapter and sockets on backwards, so that the extension inserts into the part of the socket where the bolt head usually goes. this way, when you put the 1/2 inch socket on the plug, the square part of the socket where the rachet usually attaches will fit over the plug perfectly. you will either want to jam the socket onto the plug or else leave the adapter off a little bit (if it goes all the way thru the square part, there is no where for the plug to go into). rachet it off.
you may all know this, but i had no idea and couldnt see it well enough with the upper on to figure it out. doing it this way, i believe the upper could have been left on, ask Mustang5L5 said.
i bought a new sender for $4.19 at checker and put it in the rear plug location. for the sender wire, i used a jumper wire to attach to the stock sending wire (i didnt want to peel it out of the harness). i had a bullet male connector that fit. i ran this to the new location and used a female bullet connector to attach the sender wire to the sending unit.
i ran the sender (mechanical gauge) through the rubber dealie that surrounds the steering shaft on the firewall. be careful of your wiring, especially around the gas and brake pedal. use wire ties etc.
for what it is worth, basing my comments on the fact that i assume the mid point of the stock gauge to be 200* (halfway between 130 and 270), both gauges seem to read very similar when hot. today, my stock gauge was about 1/2 way to the mid point (theoretically around 165), yet my mechanical was reading around 190. then magically, the stocker caught up while the new gauge remained.
as i said, this is what worked for me. feel free to P.M. for future questions.

where did this thread come from?
your gauges should have come with adapter fittings. if not, call the vendor or go to the parts store and get a set of adapters from their gauge section.

Rick, my bad. i thought i remembered Jerry telling someone that the Autometers came with the correct adapter. oops. thanks for correcting my mistake.