goalieman59
Learning Slowly
Does anyone have a write up on how to perform the cleaning for the 332 code before i replace any parts.
Code 332
- Thread starter goalieman59
- Start date
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hawkeye18
Sorta cares
just search "Clean EGR valve". There are literally hundreds of posts on how to clean your EGR valve.
St Louis SHO
Rollin' coal
Put a DPFE on it. The intake is less than 5k miles old on this car, it was just cleaned and Powdercoated.
James
James
St Louis SHO
Rollin' coal
Bump. This 332 wont go away. New DPFE (twice) Clean EGR passages, replaced solenoid, working EGR valve. The only thing we havent replaced is the EGR itself, as I can see it working. Any ideas?
goalieman59
Learning Slowly
Bump for some help
hawkeye18
Sorta cares
have you checked the wiring from the DPFE back to the EEC?
jpSHO
New Member
I concur with hawkeye18. I had to jump two wires from the DPFE to the EEC on my 95 SHO. After about two years of chasing this problem.
St Louis SHO
Rollin' coal
On my Snap on scanner it shows the correct voltage when the EGR is closed, and open.
EDIT: remember I do this for a livin, so posting here for help is a last resort
St Louis SHO
Rollin' coal
Guess I'mma throw an ECM at it next.
hawkeye18
Sorta cares
well... uh, at least my suggestion wasn't met with "are you F*#%ING ********!!!!!1!!1!" so I feel good.
projectSHO89
SHOless In St L
Hey James.
About 8 years ago or so, I ran into this with my first 94 ATX.
I installed a vacuum gauge in each of the two vac lines to the DPFE sensor then watched them during the EGR test as I ran the KOEO test. As I recall, one port remained constant while the other dropped when the EGR valve opened. I was able to also watch the output voltage of the DPFE sensor change in direct proportion to the EVR solenoid voltage.
As I remember (and it has been awhile) when testing that one, the engine's RPMs dipped during the self-test as the valve opened but the DPFE sensor failed to report the change in EGR flow. Dead sensor on that one. After replacing the sensor and re-running the test, I was unable to discern the EGR valve's opening although I did see it on a vacuum gauge installed in the EGR valve green hose circuit.
Remember, I work on electro-mechanical stuff for a living, to me this is a simple closed-loop feedback control system, something I've worked on for thirty years.
Steve
About 8 years ago or so, I ran into this with my first 94 ATX.
I installed a vacuum gauge in each of the two vac lines to the DPFE sensor then watched them during the EGR test as I ran the KOEO test. As I recall, one port remained constant while the other dropped when the EGR valve opened. I was able to also watch the output voltage of the DPFE sensor change in direct proportion to the EVR solenoid voltage.
As I remember (and it has been awhile) when testing that one, the engine's RPMs dipped during the self-test as the valve opened but the DPFE sensor failed to report the change in EGR flow. Dead sensor on that one. After replacing the sensor and re-running the test, I was unable to discern the EGR valve's opening although I did see it on a vacuum gauge installed in the EGR valve green hose circuit.
Remember, I work on electro-mechanical stuff for a living, to me this is a simple closed-loop feedback control system, something I've worked on for thirty years.
Steve
jpSHO
New Member
Mine showed the correct voltage too. It might be an intermitent problem causing the 332 code which might be a bad wire. Once I ran new wires to the EEC the problem was fixed.
goalieman59
Learning Slowly
I am glad someone else has seen this issue.
St Louis SHO
Rollin' coal
Your car is having *** right now. It may be ok in a few days
its going through TD wheel rejection
only one cure...................
goalieman59
Learning Slowly
I am trying to remedy that as we speak
goalieman59
Learning Slowly
Still having the 332 issues, any other ideas
goalieman59
Learning Slowly
Code came back, put brand new DPFE on car, and still having codes, I am going to replace the vac tubes, andything else I can try.
93rev2sev
SHO Member
I'm just a shadetree schmuck and I have no idea about how this system works, but I've seen cracks in the EGR tube that sealed themselves with temperature changes and also with a lack of road vibration.
