Problem with Defi Bf Thermostat Connector Into a FC Water Pump thermostat hole."Help"
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The "threads" appear to be different from both ends of the water pump connectore does anybody have any references into finding another place to connector the "DEFI thermostat switch" or swaping the wire into the OEM thermostat connector..
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the defi sensor thread is 1/8PT and another adapter is 1/8NPT, what does that mean...? what is PT and NPT and what does a conversion adapter look like...?
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might need to find an adapter that fits the defi thermostat but screws into the stock hole... i know for some (cant remember if im right or not) but some autometer gauges come with thread adapters to allow stuff like the oil pressure sensor to fit into the stock hold... check your local hardware store
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PT and NPT are in reference to the thread pitch...or something. AFAIK those are imperial threads. Check for adapters at plumbing shops...most hardware stores probably won't carry stuff like that.
Now this may be an assanine question...but why are you replacing that sensor with the Defi BF one? Im pretty sure that water temp sensor goes to the ECU. Keep in mind I dont know what a BF thermostat connector does :) |
Originally Posted by Wankels-Revenge
PT and NPT are in reference to the thread pitch...or something. AFAIK those are imperial threads. Check for adapters at plumbing shops...most hardware stores probably won't carry stuff like that.
Now this may be an assanine question...but why are you replacing that sensor with the Defi BF one? Im pretty sure that water temp sensor goes to the ECU. Keep in mind I dont know what a BF thermostat connector does :) plumbing shops... any links to plumbing shops |
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what is the thread size for the OEM tempature sensor..? 'Autometer' see's to have an adapter but i can't find the link for what i need to buy...??? anybody know the Defi is 1/8pt and the OEM is...?
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ok i think i got it.. i Looked up "AUTOMETER.COM at the FAQ and it tells me for all "Rotary applications for Water Tempature switch is "1/8" NPT to M16x1.5" for the Adapter. Is this correct..
http://hp.autometer.com/products/acc..._adapters.html |
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Originally Posted by theone81
ok i think i got it.. i Looked up "AUTOMETER.COM at the FAQ and it tells me for all "Rotary applications for Water Tempature switch is "1/8" NPT to M16x1.5" for the Adapter. Is this correct..
http://hp.autometer.com/products/acc..._adapters.html i believe thats what your looking for right there |
I think you removed your waterthermosensor. If I'm right you should put that back in immediately. It sends or receives (I forget) signals to or from the ECU and your car will feel like limp mode if you do not have it installed.
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Yeah, I was about to say that.
Good call. Just drill another hole in your waterpump housing and put your sensor there. If you don't want to buy a Tap/Die kit. Take your WP housing to a maching shop. They should be able to drill the hole and tap for you for a resoanable charge. James |
If you have a 1/8" NPT adapter for your DEFI sensor just take out the stock sensor out of the location on the block next to the oil pressure sender under the oil filter pedestal and put it there. The stock sensor hole is threaded for 1/8" NPT and will fit right in with your adaptor. Only thing you may have a problem with is fitting it in there since space is cramped. Might depend on how long your sensor and adapter are.
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^^ I agree...
And get that sensor back in. Without it, your gas mileage will go to shit, and your car will run like shit. That sensor sends a signal to the ECU. It tell the ECU how hot the motor is so that the ECU can regulate the A/F mixture based on the temp. At least that's what I was told.... |
yes, coolant temp sensor is the most critical engine sensor along with air mass
dont replace it with a gauge sender |
dman
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So if i connect either 10: water themosensor connector or 11: water thermoswitch connector (A/T, Trubo) im gonna have problems with the ECU no matter what... im just trying to find the Least problems to Instal this DEFI thermoswitch... If i have to Drill where should i drill at..? it suck that these two thermoswtichs need to be feed through the ECU... :(
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Originally Posted by theone81
So if i connect either 10: water themosensor connector or 11: water thermoswitch connector (A/T, Trubo) im gonna have problems with the ECU no matter what... im just trying to find the Least problems to Instal this DEFI thermoswitch... If i have to Drill where should i drill at..? it suck that these two thermoswtichs need to be feed through the ECU... :(
They sell 1/8" NPT taps anywhere...and the recommended drill bit for that is 11/32. |
so those thermoswitchs need to be connected anyways
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hey.. what about splicing the OEM thermoswitch sensor cable TO the DEFI cable switch.. would that work instad of removing the pump and drilling a hole...?
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Originally Posted by theone81
hey.. what about splicing the OEM thermoswitch sensor cable TO the DEFI cable switch.. would that work instad of removing the pump and drilling a hole...?
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Just wondering why you dont try what I recommended? I mean the stock gauge isnt all that accurate anyways and if you have an aftermarket one you dont really need it. Although the s4 temp gauge is superior to s5 when you have an aftermarket gauge you dont really need the stock one in my opinion. No drilling required, about as easy as it gets. Plus I feel the stock location is the best since that is probably the hottest point in the coolant system.
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you know whats weird.. my thermosensor was broken off for like.. atleast a year, once i replaced it, i saw NO changes in my car's gas mileage, idle, temp, anything..
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Originally Posted by foild
you know whats weird.. my thermosensor was broken off for like.. atleast a year, once i replaced it, i saw NO changes in my car's gas mileage, idle, temp, anything..
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i wouldn't..
its there for a reason, and does do something for sure... im just saying :) you could try if you wanted.. but i wouldn't recomend it. |
Originally Posted by foild
you know whats weird.. my thermosensor was broken off for like.. atleast a year, once i replaced it, i saw NO changes in my car's gas mileage, idle, temp, anything..
What year is you FC? Turbo or non? Current gas mileage? James |
i have never calculated my milleage..
but, at $101.9 (current cost/Liter of gas)driving to work 6/7 days a week, through heavy traffic, about 30 minutes each way, i pay max 45$ a week. its a NA, 1986, GXL model, with 137,000 KM on engine. |
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why do you guys think should i just use this "SPLICE COONECTOR" the OEM wire Thermosensor "With" the DEFI thermosensor wire..? it should give me readings....
its better than drilling a hole in the water pump..? |
So you are proposing leaving the stock water thermosensor in the back of the waterpump and splicing the wires from your DEFI gauge into the stock wiring??
If that's what you mean I really think you are going about this totally the wrong way. EDIT: Even if it does give readings I doubt it is something that will correspond with your gauge. |
Originally Posted by theone81
why do you guys think should i just use this "SPLICE COONECTOR" the OEM wire Thermosensor "With" the DEFI thermosensor wire..? it should give me readings....
its better than drilling a hole in the water pump..? You cannot use the stock sensors. Period. Barking up the wrong tree. And splicing your Delphi sender wire into a stock wire is doing that. Seems like you do not want to remove the WP housing and do this job right. Project a little more than you thought? Don't want to remove the WP housing? The closest you can come to doing this with lazy in mind is doing what Riceeater suggested. And that is getting a T fitting...in the hole the stock coolant temp sensor goes (under oil filter). However space is TIGHT there and that is going to be sooo much trouble. Not to mention finding a metric brass fitting that will thread that hole ( I guess buy it from autometer). Your like me though.... I tend to travel around my elbow sixteen times to avoid taken more stuff apart and doing it quickly the first time even though it involves more trouble. When it would be so much easier and quicker to commit to the project and get it done right (Thank santiago ) James |
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