1995 Aurora motor/transmission issue

[andromedashero]

Hey guys,
I just have a question about something that just developed with my 1995 Aurora. The motor has 237,000 miles on it and I recently did some work around the throttlebody area. What I did was remove the TPS and that was when the problem developed. After I reinstalled the TPS and took the car out for a drive, the transmission no longer shifts beyond 3rd gear. The SES light is on and the question I have is this: Are the TPS' meant to be installed only once? I ask this because when I removed it, it sounded like a spring-loaded mechanism was released in the TPS. Also, when I turn the key to the "ON" position, the idle control motor performs a weird clicking where the arm on the idle control motor goes in and out for about 15 seconds. So does the TPS have any influence on how the transmission shifts? It just seems odd that the transmission won't shift now after I only removed the TPS. Any input would be great! I really enjoy this car and I would love to get it back to it's great running form.

Thanks for any input!

[tjm]

you will have to do the idle learn procedure
here is a link that should help
http://aurorah.proboards47.com/index...3959800&page=1

Oh - Nice miles!

[andromedashero]

Thanks TJM, I'll be sure to give that a shot. Do you think that has an affect on the transmission not shifting beyond 3rd gear as well?
Thanks again

[tjm]

could be - if the throttle possition is out of sync

[baron1701]

EGR TPS controls overdrive

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The following explains why an Aurora will shut off your overdrive ONLY.



A few months ago I started hearing my Idle Control Motor click when I shut off my car. Immeadiately I ripped open the hood and took out my toolset and went to work. I had a spare tps so I switched it out and cleaned out my egr valve. I also sprayed everythng down with throttle body cleaner and toothbrush cleaned the throttle body. I think I did a little more playing around that I cant even remember.

Well, after all of this the car ran better than ever. The idle was rock solid. The performance difference was great..... until... The next day on the way to work the car wasn't running right. The RPMS were way high and yet the car loved it. The fuel economy was dropping fast as hell too. After I got home I switched out EGR valve with a new one from pepboys. There was no difference. I went home and switched ou the TPS that i hd changed and still no difference.

So now what??? Damn tranny, god damned starter, what the heck now, another transmission??? Last resort I broke out my service manuals and checked. After hours of tracing the path of electrical signals, I found it. The TPS (throttle position sensor) throws a code to the PCM when it fails. This code tells the computer to deactivate the EGR system. The EGR valve then shuts down the overdrive shifting patern and runs the car rich.

A long time ago the engine light had burned out, so when the car throws codes I cant tell. Next i looked over what I had done. LOOKY LOOKY I found a cookie!!!!!!! I had forgoten to plug in my original TPS when I was "rebuilding" the throttle body and it was shutting down the EGR. Thats why the engine was exhibiting the same symptoms as a blown EGR.