martinh67
Member
- Joined
- December 10, 2008
- Messages
- 18
- Reaction score
- 0
- City, State
- Virginia
- Year, Model & Trim Level
- '94 XLT
Recently replaced PFE and and cleaned IAC and MAF. She was running great for about 200 miles. Now she is running rough at idle with CEL and the following codes:
KOEO
327 - DPFE or EVP circuit below minimum voltage of 0.2 volts.
543 - When the PCM commanded the fuel pump on, voltage was not detected on FPM.
CM
327 -
332 - EGR valve opening not detected.
KOER
172 - HEGO sensor circuit indicates system lean (right side)
327 -
538 -Insufficient RPM change during KOER dynamic response test/ Operator error.
I checked the input voltage the to the EGR vacuum regulator and read 14VDC. Kinda high I think.
My next step would be to replace the EGR valve. I also replace the EGR vacuum regulator. All vacuum lines seem good.
Should I replace the EGR valve? I'm afraid of throwing $$ into something that can be simple. Any ideas?
KOEO
327 - DPFE or EVP circuit below minimum voltage of 0.2 volts.
543 - When the PCM commanded the fuel pump on, voltage was not detected on FPM.
CM
327 -
332 - EGR valve opening not detected.
KOER
172 - HEGO sensor circuit indicates system lean (right side)
327 -
538 -Insufficient RPM change during KOER dynamic response test/ Operator error.
I checked the input voltage the to the EGR vacuum regulator and read 14VDC. Kinda high I think.
My next step would be to replace the EGR valve. I also replace the EGR vacuum regulator. All vacuum lines seem good.
Should I replace the EGR valve? I'm afraid of throwing $$ into something that can be simple. Any ideas?