Error Code hell (Page 1/2)
SamanthaM APR 02, 06:01 PM
So I took my 86 V6 to get the brakes and tie rods done. When I picked it up, she seemed to be idling rough. As I drove it home the SES light came on for a few and then went off. I got home and she was idling even worse. I pulled the code, #15. I came here, did my reading and ordered the coolant sensor. I finally got a chance to work on the car and replace the coolant sensor and as I moved the solenoid out of the way I noticed a totally crap vacuum line. No problem, I can fix that. So I finish putting in the sensor and finally get the old crappy vacuum hose off the front of the solenoid and the firewall, get new hose connected and I reset the ECM.

Started her up and she is idling normal, no more sputtering and skipping around. Take her for a test drive around the block, she seems fine. Double checked for leaks and what not that I fixed today and all is good. I decide to take her on a bit longer run. I'm not 10 minutes out and SES light comes on and stays on. Car is running fine but light is steady. I get back home and pull the codes.... #13 & 32.... So I read more here and check the connectors on the throttle position sensor and IAC thinking maybe I bumped something when I was laying in the engine bay? Everything looks good.....

Did I miss something? I can't believe that 2 sensors can die on the same day????

Suggestions? Please????
phonedawgz APR 02, 09:04 PM
Code 32 is EGR control not functioning. If your vacuum lines to the EGR control solenoid are broken you will get a code 32 so that is the first place to look. You won't get the code 32 until you start driving since the EGR is not called for by the ECM until you are driving.

Code 15 is a throttle position sensor. You could test it or just replace it. You could also try to reset the ECM and see if it returns. The TPS tends to wear out at partial throttle and if that is where yours is worn out again it would not show up until you drove it.

If your vacuum lines are not the cause of your code 32, then it is most likely a bad EGR control solenoid (assuming a V6). I am in the process of designing a replacement EGR control solenoid and should have them available shortly.
Gall757 APR 02, 09:21 PM
Code #13 is the 02 sensor....check to see if you bumped the wire on that....
SamanthaM APR 03, 07:07 AM
The original issue I started with was the code 15 and replacing the coolant sensor definitely fixed the rough idle and sputtering.

Today, since I found 1 bad vac line yesterday, I am going to retrace all the vac lines and see if I missed something. I will also check to see if I bumped any plugs while trying to fight the vac line off the firewall yesterday....

I am picking up an O2 sensor today and will tackle replacing that.

I read somewhere on here (can't find the article now of course) about cleaning the IAC and TPS sensor ????

If all the rest of my vac lines check out, is it a safe bet the EGR Valve is bad and the reason for the code 32? Also read that it's not a huge deal to just skip replacing it??? Thoughts???
SamanthaM APR 03, 07:13 AM

quote
Originally posted by phonedawgz:

Code 32 is EGR control not functioning. If your vacuum lines to the EGR control solenoid are broken you will get a code 32 so that is the first place to look. You won't get the code 32 until you start driving since the EGR is not called for by the ECM until you are driving.

If your vacuum lines are not the cause of your code 32, then it is most likely a bad EGR control solenoid (assuming a V6). I am in the process of designing a replacement EGR control solenoid and should have them available shortly.



The one junky vac line I found yesterday was on the front of the EGR solenoid when I moved it out of my way to get to the coolant sensor. I did replace that. But I did notice this small kinda L-shaped one that is really loose, like it slides on and off easy? Could that too be past of the code 32???

BTW.,.. Thank you for the advice/help, I appreciate it.
phonedawgz APR 03, 12:21 PM
If your code 32 comes on after getting up to speed then most likely the issue is the EGR solenoid is commanded to allow vacuum to pass and the sensor is looking to read it, but isn't. Could be no vacuum to the solenoid, a bad solenoid, a vacuum leak after the solenoid or a bad sensor.

Yes it should fit tightly.
SamanthaM APR 04, 02:35 PM

quote
Originally posted by phonedawgz:

Code 32 is EGR control not functioning. If your vacuum lines to the EGR control solenoid are broken you will get a code 32 so that is the first place to look. You won't get the code 32 until you start driving since the EGR is not called for by the ECM until you are driving.

If your vacuum lines are not the cause of your code 32, then it is most likely a bad EGR control solenoid (assuming a V6). I am in the process of designing a replacement EGR control solenoid and should have them available shortly.



I fixed all the rest of the junk vacuum lines. I took her for a spin and in a matter of a minute the SES light comes on and stayed on. She runs great, not a sputter so single hesitation. When I read the codes I am still getting #13 - O2 sensor (which I haven't replaced yet but have the part) and #32 EGR Vacuum Control.... so I am guessing the Solenoid is crap. Any ETA when you may have your replacement available?

Or where/if I can buy a new one to replace mine???
Gall757 APR 04, 03:49 PM
Fix the 02 sensor and reset the computer. There is a chance the 32 will go away, but maybe not. Check for a tight fit on the elbow at the EGR valve. That, if loose, will trip a 32 after a while. You can take a shot at rebuilding the solenoid, There is a good thread on here to instruct you.

http://www.fiero.nl/forum/Forum2/HTML/122507.html

[This message has been edited by Gall757 (edited 04-04-2020).]

SamanthaM APR 04, 06:08 PM
Is there a how to thread for getting that O2 sensor off???? I swear I think it is the original from 1986!!!!!! It is rust welded on and there is little to no room to reach it from the top???
Patrick APR 04, 06:27 PM
...oops, misread what you were after.


quote
Originally posted by SamanthaM:

Is there a how to thread for getting that O2 sensor off????



Hopefully it was installed with anti-seize applied... but it'll probably be a good idea to soak it down with penetrating oil (not WD-40) nevertheless.

[This message has been edited by Patrick (edited 04-04-2020).]