Name That Sensor!
#1
Name That Sensor!
Title sounds like a game show, doesn't it? Too bad I can't afford handing out prizes for correct answers. So, I have pictures for 3 different sensors with the location. I want to get replacements and need to know the correct names for them please. The engine is a 90-92 TPI 305.
First one, front of the intake:
Second one: Driver Side Head
Third & final: Passenger Side Head:
Thanks for any help in naming these.
Bad Wolf
First one, front of the intake:
Second one: Driver Side Head
Third & final: Passenger Side Head:
Thanks for any help in naming these.
Bad Wolf
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#4
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Re: Name That Sensor!
I would add, #2 (temp gauge sending unit) is the factory style, and replacement ones won't look like that, although the factory connector (or that one) will fit them; and #3 (fan switch) is a monkey abortion, and not only is the switch destroyed, but also, the wire needs a new pigtail, so get one of those too.
Some people simply should not be allowed to touch wiring.
Some people simply should not be allowed to touch wiring.
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#6
Re: Name That Sensor!
Being from Indiana, I would normally blame it on Kentucky engine take out, but I got this motor outside of Chicago. It would have been great if he left the harness still attached, nnow I get the fun job of figuring out what some of it hooks to. Some are quite easy, others? Not so much.
Thanks for the replies;
Bad Wolf
Thanks for the replies;
Bad Wolf
#9
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Re: Name That Sensor!
Bill, Jill, and Shaniqua. In that order.
The first is the CTS for the computer, driver's head is the coolant temp gauge sender, passenger's is the fan switch.
SW555 is the replacement for the lower temp (grand national, TTA) fan switch, right? Seem to remember reports that it didn't actually come on lower than stock for some people who've tried it. The traditional aftermarket low temp fan switches seem to be mostly discontinued, but there were some options on Summit last time I looked that looked promising.
The first is the CTS for the computer, driver's head is the coolant temp gauge sender, passenger's is the fan switch.
SW555 is the replacement for the lower temp (grand national, TTA) fan switch, right? Seem to remember reports that it didn't actually come on lower than stock for some people who've tried it. The traditional aftermarket low temp fan switches seem to be mostly discontinued, but there were some options on Summit last time I looked that looked promising.
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Tidan (05-23-2020)
#10
Re: Name That Sensor!
The Wells SW555 switch is no longer available.
So, I have an update with original part numbers:
Switch, Fan Cont (1 Blade Term, 3/8 - 18 THD) (1.055) = Part Num 10045782 can not be found. All the ones that the part leads to is a different style of connection. As seen Here
Sensor, Eng Cool T/GA(3/8 - 18 THD, Collar Button) = Part Num 25037346 - Replacement part on (I just ordered 2 yesterday) for the Driver Side Head. Same part can be found on Classic Industries.
Sensor, Eng Cool Temp (At Int Manif) (Interfaces w/ECM) (Used For Clusters w/Oil Gage & Light Comb) (Goes w/ 12101899 Conn) (3/8 - 18 THD) (2 Blade Terminal) (1.150) = Part Num 25036979 Can be found on Rock Auto
Yes, they were already named, I'm just supplying the original part numbers and replacement part locations.
Bad Wolf
So, I have an update with original part numbers:
Switch, Fan Cont (1 Blade Term, 3/8 - 18 THD) (1.055) = Part Num 10045782 can not be found. All the ones that the part leads to is a different style of connection. As seen Here
Sensor, Eng Cool T/GA(3/8 - 18 THD, Collar Button) = Part Num 25037346 - Replacement part on (I just ordered 2 yesterday) for the Driver Side Head. Same part can be found on Classic Industries.
Sensor, Eng Cool Temp (At Int Manif) (Interfaces w/ECM) (Used For Clusters w/Oil Gage & Light Comb) (Goes w/ 12101899 Conn) (3/8 - 18 THD) (2 Blade Terminal) (1.150) = Part Num 25036979 Can be found on Rock Auto
Yes, they were already named, I'm just supplying the original part numbers and replacement part locations.
Bad Wolf
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Re: Name That Sensor!
#1 CT sensor for ECM
#2 CT sensor for dash cluster
#3 CT switch for secondary fan, just under you will find knock sensor
#2 CT sensor for dash cluster
#3 CT switch for secondary fan, just under you will find knock sensor
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Re: Name That Sensor!
All 3 of those parts are different and unique, They do not interchange or substitute for any other.
The remains of the fan switch in the pic do not look like the original. Some form of sodomy has been inflicted upon it. Ignore what it looks like and do not try to match it.
The fan switch you linked to is the correct style. It uses the same type connector as the knock sensor.
If that's YOUR car's wiring hanging off of those parts, you need pigtails, connectors, etc., as previously mentioned.
The remains of the fan switch in the pic do not look like the original. Some form of sodomy has been inflicted upon it. Ignore what it looks like and do not try to match it.
The fan switch you linked to is the correct style. It uses the same type connector as the knock sensor.
If that's YOUR car's wiring hanging off of those parts, you need pigtails, connectors, etc., as previously mentioned.
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Car: 1989 IROC-Z 305 LB9 AT Convertible
Engine: LB9 305
Transmission: AT
Re: Name That Sensor!
Regarding the right side cylinder head temp switch(for the secondary fan) 89 305 TPI, anyone know a good part # for a little lower "ON" temp, than the OE? Thanks.
#15
Re: Name That Sensor!
All 3 of those parts are different and unique, They do not interchange or substitute for any other.
The remains of the fan switch in the pic do not look like the original. Some form of sodomy has been inflicted upon it. Ignore what it looks like and do not try to match it.
The fan switch you linked to is the correct style. It uses the same type connector as the knock sensor.
If that's YOUR car's wiring hanging off of those parts, you need pigtails, connectors, etc., as previously mentioned.
The remains of the fan switch in the pic do not look like the original. Some form of sodomy has been inflicted upon it. Ignore what it looks like and do not try to match it.
The fan switch you linked to is the correct style. It uses the same type connector as the knock sensor.
If that's YOUR car's wiring hanging off of those parts, you need pigtails, connectors, etc., as previously mentioned.
As for the cut wires, I already knew that after inspecting the engine when I got home with it. Since I now know that the wrong fan switch was put in there, I will get the correct on and then go after the pigtails for both Head Sensors.
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Re: Name That Sensor!
i think the wells is 210f on.
https://www.summitracing.com/parts/sum-890018
#20
Re: Name That Sensor!
I got the information about Kroil from the older gentleman, that used to build some race engines, who I bought the 30 over block only to trade it for a 40 over Hyd. Roller block. He told me, which I already knew, that "WD-40 is crap, PB Blaster" (one which I always have a can around. I've been using it for 20 some odd years) "is good but only works better with heat applied" (I knew that also), and "Kroil is the best out there for rust removal of frozen bolts, nuts, screws and such". I thought I would give it a try
#21
Re: Name That Sensor!
@mikeceli BTW, I used to have a 79 Bandit Edition T/A. A guy that used to own a BBQ place had it just sitting behind the restaurant, I would drive past and keep saying that I was going to check it out to see what it actually was. I knew it was black, but faded and dirty. One day I finally stopped and looked it over, I thought it was a Bandit but couldn't be sure, it had the Gold Pontiac Arrow, but anyone could have added it later. I still couldn't tell much, until I saw the faded Gold Pinstripes, then I knew it was. The restaurant was closed for the day, but I went the next day and talked to the guy. He said he's had it for years, but didn't really want to keep it. Said if I had $500, I could buy it. SOLD! It had a dead battery and with a jumpstart, it fired right up and I dove it the 5 miles back home. The 403 was smoking and leaking oil, but ran strong. Saw the Y84 fender tag when I popped the hood confirming the steal of a deal, sprayed on engine degreaser and the oil leak and engine smoke went away. It never did have an oil leak.
The normal rust was running wild on a car in Indiana, but not that horrible. The T-Tops didn't leak, the front seat needed rehab, the rear seats looked in a very good condition, Floorboards were bad but not Flintstones bad, 403 was still the light blue color, Gold Anodized Steering wheel was a little faded but you could see it, while the dash bezel was faded except around the trim rings. That was also 20 years ago. One day, out of the blue, the wife told me that I can't have to cars two keep fixing and one of them has to go ( I should have gotten rid of her, being the one that had to go). After weeks of going over which one to sell, Bandit or the 90 RS T5 w/9 Bolt 2.77:1, I knew I could sell the Bandit for more than the RS. And I did, for $1300. I only have a few badly taken pictures of it to remind me what I gave up, because now I don't have the 90 RS either. Wife is still around, can't seam to get rid of that one. I've been trying for years, believe me, I have tried.
The normal rust was running wild on a car in Indiana, but not that horrible. The T-Tops didn't leak, the front seat needed rehab, the rear seats looked in a very good condition, Floorboards were bad but not Flintstones bad, 403 was still the light blue color, Gold Anodized Steering wheel was a little faded but you could see it, while the dash bezel was faded except around the trim rings. That was also 20 years ago. One day, out of the blue, the wife told me that I can't have to cars two keep fixing and one of them has to go ( I should have gotten rid of her, being the one that had to go). After weeks of going over which one to sell, Bandit or the 90 RS T5 w/9 Bolt 2.77:1, I knew I could sell the Bandit for more than the RS. And I did, for $1300. I only have a few badly taken pictures of it to remind me what I gave up, because now I don't have the 90 RS either. Wife is still around, can't seam to get rid of that one. I've been trying for years, believe me, I have tried.
#22
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Re: Name That Sensor!
............Bad Wolf Spray it on and give it a moderate hit w/ a hammer. This may shock the treads and help break corrosion. If you have the time, spray and smack couple tiles a day.
Very interesting Bandit story! Mine..........Dad owned local wrecking yard, 2 sons worked there, but wanted to quit. Dad told them id they stayed, he would buy them each a Trans Am. The three of them went to Bob Benson Pontiac GMC, right here in Petaluma Ca. One son got a TA, off the lot. Other son said, "Let's see the order book" and proceeded to special order a 1979 SE Y84 (Bandit) Trans Am. Every option except Map Light . As told to me by the seller.
I bought the TA from son who ordered it, new. It has lived it's entire life in Sonoma County, Ca.
Very interesting Bandit story! Mine..........Dad owned local wrecking yard, 2 sons worked there, but wanted to quit. Dad told them id they stayed, he would buy them each a Trans Am. The three of them went to Bob Benson Pontiac GMC, right here in Petaluma Ca. One son got a TA, off the lot. Other son said, "Let's see the order book" and proceeded to special order a 1979 SE Y84 (Bandit) Trans Am. Every option except Map Light . As told to me by the seller.
I bought the TA from son who ordered it, new. It has lived it's entire life in Sonoma County, Ca.
#23
Re: Name That Sensor!
............Bad Wolf Spray it on and give it a moderate hit w/ a hammer. This may shock the treads and help break corrosion. If you have the time, spray and smack couple tiles a day.
Very interesting Bandit story! Mine..........Dad owned local wrecking yard, 2 sons worked there, but wanted to quit. Dad told them id they stayed, he would buy them each a Trans Am. The three of them went to Bob Benson Pontiac GMC, right here in Petaluma Ca. One son got a TA, off the lot. Other son said, "Let's see the order book" and proceeded to special order a 1979 SE Y84 (Bandit) Trans Am. Every option except Map Light . As told to me by the seller.
I bought the TA from son who ordered it, new. It has lived it's entire life in Sonoma County, Ca.
Very interesting Bandit story! Mine..........Dad owned local wrecking yard, 2 sons worked there, but wanted to quit. Dad told them id they stayed, he would buy them each a Trans Am. The three of them went to Bob Benson Pontiac GMC, right here in Petaluma Ca. One son got a TA, off the lot. Other son said, "Let's see the order book" and proceeded to special order a 1979 SE Y84 (Bandit) Trans Am. Every option except Map Light . As told to me by the seller.
I bought the TA from son who ordered it, new. It has lived it's entire life in Sonoma County, Ca.
#25
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Re: Name That Sensor!
It is the IAT sensor, Intake Air Temp. and it is the same part as the CTS. BTW just throw that old rusty nipple in the trash when you get it off. I found o new one in the "Help" isle at my local parts store, I think it was around $7
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Re: Name That Sensor!
Dorman - Help Heater Hose Connector 5/8 In. Hose X 3/8-18 Npt X 1-1/2 In. Long Nipple
Rated 5 out of 5 stars1 Review
LIMITED LIFETIME REPLACEMENT
Part # 56152
#29
Re: Name That Sensor!
Dorman - Help Heater Hose Connector 5/8 In. Hose X 3/8-18 Npt X 1-1/2 In. Long Nipple
Rated 5 out of 5 stars1 Review
LIMITED LIFETIME REPLACEMENT
Part # 56152
#31
Re: Name That Sensor!
Alright, IAT or AIT whatever it's called, anyway. This is what it looks like when I pulled it from under the Plenum
Which I found a replacement. But, looking for a replacement I have found several of the following type of IAT
Which one do I have to get?
Which I found a replacement. But, looking for a replacement I have found several of the following type of IAT
Which one do I have to get?
#32
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Re: Name That Sensor!
The top sensor looks like it goes into fluid, the bottom sensor appears to go into AIR. You can see the Thermister on it tip.
#34
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Re: Name That Sensor!
The second sensor is considered a "bird cage" sensor and IIRC it is just the newer style, probably more accurate. Either should work as long as the connector is the same on both and from the photo it looks that way. I used the top sensor when I replaced mine and yes that style works in both fluid and air.
#35
Re: Name That Sensor!
The second sensor is considered a "bird cage" sensor and IIRC it is just the newer style, probably more accurate. Either should work as long as the connector is the same on both and from the photo it looks that way. I used the top sensor when I replaced mine and yes that style works in both fluid and air.
#36
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Re: Name That Sensor!
If you put the sensor before the TB, it will fool the computer into thinking the air is cooler and supposedly make more power. Cooler the temp, the more fuel the computer adds to the mix. This could cause a rich condition when the engine is up to temp which would effect the overall performance of the car.
#37
Re: Name That Sensor!
If you put the sensor before the TB, it will fool the computer into thinking the air is cooler and supposedly make more power. Cooler the temp, the more fuel the computer adds to the mix. This could cause a rich condition when the engine is up to temp which would effect the overall performance of the car.
#38
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Car: 1989 IROC-Z 305 LB9 AT Convertible
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Re: Name That Sensor!
IAT Inlet Air Temperature? If so, this would explain the EXPOSED Thermistor in the second sensor. I have never seen an exposed Thermister, except those that are exposed to AIR . I do not think that should be exposed to coolant. It will fail.
#39
Re: Name That Sensor!
IAT = Intake Air Temperature Sensor. It's also known as MAT ( I want to say it's Manifold Air Temperature) Sensor. I've even heard it as AIT = Air Intake Temperature Sensor
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