95BLKVette

I'm having a real hard time finding this part number....or OEM part for that matter!

Ecklers sent me the wrong part even though they have the correct part picture in their catalog, and will not correct their website although they agree it is the wrong part they are sending out...how stupid is that? They did refund my money though.

The sensor is a single wire unit with a round brass stud connector on top.

None of the parts suppliers seem to carry the correct sensor unit, all two wire or one wire with a spade connector.

Does anyone know what the OEM GM part number is?

Has anyone ordered and received the correct part recently?

WVZR-1

It sounds like you're describing an 8993146 (ACD D1885) which used to have a "button" on top for a connector. It's now a spade and you might need a connector to use it BUT I don't believe that should be correct for your car, this is what I believe you need a 25037332 (ACD 213-77) and a connector. The 25037332 is a 2 pin but can be used as a single pin. Images for the switch I've done are tough to come by. The ACD image machine seems broken - that's a Google image that I believe is correct.

Is this what you were sent:



Connector for it GM # 12126458 (ACD PT728):


Are the cylinder heads original? The button style you describe I don't believe was used in the LT engine family. You could use a less expensive connector that would be 2 pin and just use the correct pin. Ignore the other lead!

Shop LOCAL!!!!

Hooked on Vettes

This could be the part you describe and it appears will work on
a L98 and LT engine with the restyled dash starting in 90.

Click below.



It appears the GM documentation is not accurate.

The thread below shows the style you describe was used in a 90 L98
but the micro fiche says it was used on 90-95 ZR1's.

http://forums.corvetteforum.com/1578104956-post6.html

WVZR-1

A '91 L98 uses the Amazon linked part and I believe the ACD part # has changed to the linked 213-80 but i see no documentation that it's a correct fit for the OP's '95. My guess was that at some point someone bought maybe the incorrect sender because they got "argumentative" about the 2-pin I displayed and the guy said here take this and gave them the "button head" and sent them on their way. Happens everyday.

If he buys the "button head" and it reads correctly life could be good. If it's not a physical fit (thread) he could exchange it(the thread I'm quite sure is the same) or if it reads in "error" then he would need to "BUY" the second one because he "PICKED" the first. It really pays to shop "LOCAL" - why argue with the Internet based vendor in this case Ecklers.

I'd say Ecklers sold him the correct part BUT they're not "parts guys" and couldn't explain! Refunded him and sent him on his way! We don't know what they sold. The OP just said "it ain't right" because it didn't match what he says is in car.

The image I displayed is what should I believe be in all LT based vehicles, '92 forward. The LT5 isn't an LT based engine only "tagged" as when released.

Since the gauge is 260 (I believe) in both the '90/'91 and the '95 cluster buy the 25037346 (ACD 213-80) and maybe move on. It's not "factually" correct but it will likely put the needle where it needs to be, LIKELY!!

95BLKVette

Thanks, the ACDelco 213-80 is the correct part I just purchased it from Amazon, I bought a new connector ACDelco PT308

WVZR-1

You just mean it looks like the one in your car? Correct? It's NOT correct!

Why did you buy the PT308? That is not for the switch you bought!


Did you NOT see my hint to "BUY LOCAL !!!

You need just a plastic connector and a terminal! You'll need to do them local "like it or not"!!! Can you cancel your order from Amazon?

This is what you bought for a connector:



The connector you bought fits the knock-sensor:

WVZR-1

You'll need to get one of these at the dealer:

6288704 Connector (plastic only) and a Packard 56 female terminal to fit it. You'll need an experienced "parts man" NOT a "parts boy"!

There used to be a pigtail for it from ACD but the're discontinued, they were PT1043 and PT691

You might be able to find somewhere or maybe an auto parts store could help you by cross referencing them.

EFI Connection might have the connector:



Silly question: Why didn't you just buy the right stuff?

JoeUser

I've gone through four sensors on my '96 LT1, and finally ended up with this one (which registers on the gauge, but I don't think the resistance value is correct). I bought the pigtail that connects to it properly, and am using the lead that connects to the smaller pin:



The 213-80 with the spade connector is what I originally had on mine, and could not locate that type easily, so gave up and used the one in the image above. I really would like to have a sensor that's accurate, so if the 213-80 ends up being the right part I'm going to swap out the sensor for the fifth and final time...

Never had so many problems locating such a simple part, ever...

95BLKVette: If the sensor reliably reports the temperature, please post up.

WVZR-1

Yours had a "spade" or a "button stud" on the top? Have you actually checked the temps on a quality scanner and compared to the analog gauge?

Hooked on Vettes

I think he meant to say it originally was a button type.

Here's another source for the connector/pigtail for that
type sender. Price varies so shop around.

http://www.amazon.com/Pico-5665pt-Gm.../dp/B001RPPRXC

c4_4ya

O'Reilly has the correct part- although AZ and AA had the part listed separately from the other CTS, it was the same part which didn't fit. IIRC, Napa didn't have it or they were out of stock. Went to O'Reilly and they had the correct part and it went right in and plugged right up (this was on my 92). No need to swap the pigtail, unless your connector is destroyed.

For some reason, I suspect most part suppliers carry it as the same part as the other sensor.

JoeUser

This was my experience, as well. Seems like there are inconsistencies across many parts stores (as well as parts manufacturers that supply those stores).

My first replacement unit was from O'Reilly, but it didn't look anything like the one I replaced (looked like the one picture I posted earlier). The original that was in the car when I bought it was the button-type, not the spade, with a single wire. Although, I did try a version that had a spade on it (based upon some postings I found in another forum's thread, that claimed to be the proper unit).

In the end, I re-installed the O'Reilly unit, and bought a pigtail adapter that plugged into it. It works, but I'm not confident that it's the correct sensor (due to its very low reading on the gauge).

WVZR-1

You want to have it scanned and compare your dash gauge to what the scanner sees for the ECT - they'll NOT match but they should be close. That should tell you if there's need for concern. I'm not sure you can access the ECT reading in a C68 display or not. It might be something to consider looking into. I have a Tech1 so I've never been to concerned.

It appears if you have C68 you can check it! I believe you press fan up and down at the same time to enter diagnostics for maybe 5 seconds. Using the fan up go to parameter 16 and then press the auto button and you should get the ECT display - I believe - I've never done it - someone will maybe help or tell me I'm full of it !!!!

JoeUser

Mine is a '96 LT1. I plan to get one of those handheld thermal thermometers (laser type), not specifically for this issue but also to use around the house for HVAC.

I haven't tried to pull up the ECT display using the temp controller. To tell the truth, I'm not sure if it actually works for the '96, due to the fact that it's the first model to use ODBII. But, even with the ODBII readings it only reports the digital temp at the water pump, and not the head's sender unit. BTW, I have a Scangauge II that I use to measure ODBII readings, already connected and viewable while driving.

From what I understand, the only way to truly determine the correct unit is to measure resistance at varying temperatures. But, haven't felt it significantly important enough to go through the effort yet. Plus, try finding resistance specs for various sensors from today's big-box parts stores...

So, have been taking the "throw sensors at it" approach, lol...

WVZR-1

It would be a very inexpensive comparison!! You could post up your gauge and ECT values and ask for comparisons of others. It might be a very easy way to put your concern "to rest"!!!

95BLKVette

i did manage to catch my Amazon order in time and cancel both the connector and sensor

It's crazy that no one carries the corrct part though

c4_4ya

I don't know if it's the same for a 95 as my 92, but here is the link for the one that worked perfectly for my 92 ($19.99). The O'reilly part number was WT3025:

http://m.oreillyauto.com/mt/www.orei...keyword=wt3025

The AZ and AA parts were incorrect; even though the coolant temp sensor and "coolant temp gauge sender" were listed differently, they were actually the same part. But the part that controls the gauge is the one above. Again, this was the correct part for my 92, not sure of other years.

WVZR-1

Everyone has the correct part OR in your case the part you'd like to use and I can't fault you for wanting to attempt "WHAT WAS THERE" maybe first. Any after-market jobber should be able to change the ACD part number you have and you know what you'd like "visibly" so it might be a good start. Check the sensing element on the end of it and post back with what is stamped on it "if anything". It might actually have the HI-temp capabilities of the sender stamped in it. Likely in C !! You could check a couple brands maybe and see if that is different.

A 260 gauge sender might have something in the high 120C range.

POST BACK!!!!!!!