jndnaps

TPS and ICM Question

Recommended Posts

Hey folks, so I'm gonna take a trip to the bone yard to see if I can get a Throttle Position Sensor (TPS) and Ignition Control Module (ICM) For my 96 Deville with the Northstar .  What years will work for it? can I get them from 96 - 99?  Others?  Thanks! 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

96-99 all models will work. 

Share this post


Link to post
Share on other sites
CADILLAC ALLANTE 1993
CADILLAC DEVILLE 1994-1999
CADILLAC ELDORADO 1993-1999
CADILLAC SEVILLE 1993-1999
OLDSMOBILE AURORA

1995-1999


GM FAN FOREVER

Nice, clean, luxury= fine automobile

Share this post


Link to post
Share on other sites

Wow that was quick. I just posted lol.

End Hijack


GM FAN FOREVER

Nice, clean, luxury= fine automobile

Share this post


Link to post
Share on other sites

Can anyone tell me the best way to change the Throttle Position Sensor? I ended up buying a new one and of course the bottom screw is a SOB to get to. 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

The manual calls for removal of the entire throttle body.  I think I removed it on my 96 using an L shaped torx wrench like these

https://m.grainger.com/mobile/product/15X004?cm_mmc=PPC:+MSN+PLA&s_kwcid=AL!2966!10!14921218640!1102900085247&ef_id=WzzX0wAAAKTPUBCq:20180814200141:s

However, if you do need to remove the TB, be sure you have the oring in there, once it is removed it is so swelled, it can't go back in.


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites
2 hours ago, BodybyFisher said:

The manual calls for removal of the entire throttle body.  I think I removed it on my 96 using an L shaped torx wrench like these

https://m.grainger.com/mobile/product/15X004?cm_mmc=PPC:+MSN+PLA&s_kwcid=AL!2966!10!14921218640!1102900085247&ef_id=WzzX0wAAAKTPUBCq:20180814200141:s

However, if you do need to remove the TB, be sure you have the oring in there, once it is removed it is so swelled, it can't go back in.

Is there a gasket and an o ring? I'm seeing both on line. I don't think I'll be able to do it without taking the TB off. I'm pretty sure I'll lose the screw and I have no patience at all. I'll end up beating the car with a baseball bat if I lose the screw. 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

My 96 had an oring.  Later years handled it differently.  I'll look for photos


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites

I dont see any photos, I'm sorry, discussed it here 

 


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites

Here is a thread with TB photos

 

 


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites

Yes, both of those are used, depending upon how deeply you take the throttle body apart.  Look at my crossover thread above for photos that should provide some perspective for ya


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites

Just curious what is the reason for the TPS replacement?

Flaky throttle? idle issue, light?

TPS replacement is a good chance to clean that TB. Easier to remove it than to get that screw out.

Do not, I repeat do not install the TB gasket backwards. Easy to do but will cause nothing but problems.

You would be surprised how much soot can be on the back side of the throttle valve.

Dont mess with the IAC other than removing to clean the port. They can be rather sensitive


GM FAN FOREVER

Nice, clean, luxury= fine automobile

Share this post


Link to post
Share on other sites
1 hour ago, BodybyFisher said:

Yes, both of those are used, depending upon how deeply you take the throttle body apart.  Look at my crossover thread above for photos that should provide some perspective for ya

OK, first of all I've said many times in this site that I'm dumber than a box of rocks. LOL.. It's 100% true.. So thanks for your help. Let me ask you, is the throttle body actually two pieces?  Looking at your pic it looks like it is and that you just removed the front half of it. Or, I guess that's the spacer between the manifold and the TB.. If that's so, that's all I need to do, remove the TB and leave the spacer. But it looks like I would need a gasket if I do it that way not an o ring. You know, they have a wire harness running through that gap. If that wasn't there it would be a lot easier to do it with the torx wrench like you mentioned above. That harness is in there pretty tight and it's hard to get it out of the way. I should just cut the wire out and reroute it..  If the TB came off and the gasket was still stuck on good would I need to change it? 

Anyways, please, bear with me on this.. 😜

 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites
8 minutes ago, rockfangd said:

Just curious what is the reason for the TPS replacement?

Flaky throttle? idle issue, light?

TPS replacement is a good chance to clean that TB. Easier to remove it than to get that screw out.

Do not, I repeat do not install the TB gasket backwards. Easy to do but will cause nothing but problems.

You would be surprised how much soot can be on the back side of the throttle valve.

Dont mess with the IAC other than removing to clean the port. They can be rather sensitive

Well the car is idling really high and it fluctuates a lot. I cleaned the TB with it still on the motor and it's pretty much clean. The butterfly? is clean and shiny on both sides. When I ran the codes it gave me the TPS code. I forgot the number. So I'm gonna change that next. So next question, how do I know what way the gasket goes? 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

match it to the old one. The port for the IAC needs to be open IIRc.

If you pull the TB replaced the Oring and the gasket.

Oring is at the TB and the gasket is at the spacer


GM FAN FOREVER

Nice, clean, luxury= fine automobile

Share this post


Link to post
Share on other sites
9 minutes ago, rockfangd said:

match it to the old one. The port for the IAC needs to be open IIRc.

If you pull the TB replaced the Oring and the gasket.

Oring is at the TB and the gasket is at the spacer

OK, I'll pick up both and figure it out. I only need this car another month or two and it's probably going to the junk yard. It has soooo many problems now I doubt I'll sell it. 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

The paper gasket is only necessary if you take the throttle body and what looks like a spacer apart.  I believe you will only need the oring.  It's been a while so the details are a little fuzzy

Screenshot_20180815-023711_Samsung Internet.jpg


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites
10 hours ago, BodybyFisher said:

The paper gasket is only necessary if you take the throttle body and what looks like a spacer apart.  I believe you will only need the oring.  It's been a while so the details are a little fuzzy

Screenshot_20180815-023711_Samsung Internet.jpg

OK, but can I take off the TB without removing the spacer? If so, Is it more involved if I do it that way? The way it's looking now I'm gonna end up wasting more money and paying a darn shop to do this. Now I'm getting way too paranoid. 


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

That spacer is attached to the throttle body.  It comes off with the TB removing 4 bolts that are a little tough to get to.  Unless you want to take the TB and spacer apart you wouldn't need the paper gasket.  I think however that once you see how dirty the TB and spacer are you will spend an hour and clean it up.  You don't need to separate the 2 to clean them, as you know I am a fanatic so that is one of my overkill things.   You should only need the oring


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites

OK, last question and I'll leave you alone. In this pic that you posted in your crossover thread is that not the spacer still attached to the engine? This is what's throwing me off. Looks like it stays on still.  

CrossoverJob003-1.jpg


CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

Very interesting, you are correct.  I am confused now myself and I am sorry.  Good catch.  Old age is creeping up lol.

If that is the case you'll need the paper gasket.

Please, post your findings, my brain needs a refresher on this, thanks 


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites
22 minutes ago, BodybyFisher said:

Very interesting, you are correct.  I am confused now myself and I am sorry.  Good catch.  Old age is creeping up lol.

If that is the case you'll need the paper gasket.

Please, post your findings, my brain needs a refresher on this, thanks 

OK, I thought so.. I know I'm dumb, but looking at that pic I kept saying to myself "I can't be this dumb" LOL.. Old age is kicking my butt I can tell you that.. 😂 So does the gasket need any adhesive, or no?  

Edited by jndnaps

CaddySig_zps68ef241b.jpg

Share this post


Link to post
Share on other sites

In my defense it has been 11 years, and I have not had the urge to do that job since, so it would have been a 'new' job for me again haha..   I know I know, a man with an excuse, is an excuse of a man..  haha

Thank heavens for photos, my photobucket contains a treasure trove of photos...  I need to find a way to down load them, from photobucket and store them locally.

Good catch, I hope this was some help anyway :blink: :P

I wouldn't use any adhesive just clean up the mating surfaces.   I suppose getting old is better than the alternative lol

post your findings and photos, beautiful car by the way, miss mine on long trips


Pre-1995 - DTC codes OBD1  >> http://z-cut.de/US/dtcobd1.html

1996 and newer - DTC codes OBD2 >> http://carprogrammer.com/Z28/PCM/OBD2/On-BoardDiagnosticTroubleCodes(OBD-II).mht

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.