sjjones
Member
- Joined
- September 7, 2003
- Messages
- 44
- Reaction score
- 0
- City, State
- Anchorage AK
- Year, Model & Trim Level
- 1994 4X4 XL
Folks,
ISSUE: I have a 4.0 4WD 1994 Explorer with 140K. My Check Engine Light (CEL) has been coming on after 5 minutes and stays on mostly thereafter. When I first checked the codes with Key On Engine OFF (KOEO) I got 335, 327, 332, 336, and 337 (all EGR related). After resetting the computer by taking off the negative termial, then driving around until the CEL came on again, I then used the code reader again and just got the 327 and 332 codes. Along with the CEL issue, I also have a pinging when the motor get hotter (a problem I had and solved just last year as explained below).
HISTORY: Last year I had the pinging with no CEL and no codes displayed. After messing around for months trying to resolve the "pinging" issue, I finally took to a shop and they replaced the DPFE sensor which completely cured my pinging - so my DPFE sensor is only one year old. Now, a year later, the pinging has seriously returned and I'm getting the CEL and above mentioned codes which all seem to be EGR related.
DONE SO FAR: I've only visually checked the vaccum lines and wiring on the DPFE, EGR Valve, and the EVP solenoid. They appear fine. No removal or testing of individual components. Have not removed the EGR valve to check for carbon build up.
QUESTION: I checked with CarQuest locally and with discount can getthe DPFE, EGR Valve, and EVP solenoid for about $155 which seems exceptionally reasonable after reading related threads. I'm tempted to just buy the three major components, take all three off the Explorer, clean things up and look for carbon in the EGR Valve ports/holes, put on new parts and take a run with my fingers crossed. Does this sound reasonable way to proceed? I hear that the EGR Valve seldom is the actual problem; however, once I've taken the time to get it off and replace the gasket - for $58 bucks it seems prudent to replace at 140K. Since the DPFE is only one year old, perhaps the most likely culprit is the EVP solenoid (what CarQuest calls a "position sensor solenoid" - however, I've read nothing about the solenoid being a lkely cause.
I can take the parts off and try and figure out, or have someone help me, individually test them, or I can just replace at what I'm thinking is a very reasonable $155. Would very much appreciate more experienced folks suggestion.
P.S. - It looks to me like the large exhaust hose going to the EGR Valve is solid (not flexible). Attaches to the EGR Valve with large nut fitting. Can the EGR Valve be removed by just loosening the hose nut and EGR mounting bolts? Is it a difficult task? I will of course soak the hose nut and bolts with some penitrating oil a day or two in advance (I know just a little).
Many thanks.
Welcome to contact me PM at seamansjones@hotmail.com
ISSUE: I have a 4.0 4WD 1994 Explorer with 140K. My Check Engine Light (CEL) has been coming on after 5 minutes and stays on mostly thereafter. When I first checked the codes with Key On Engine OFF (KOEO) I got 335, 327, 332, 336, and 337 (all EGR related). After resetting the computer by taking off the negative termial, then driving around until the CEL came on again, I then used the code reader again and just got the 327 and 332 codes. Along with the CEL issue, I also have a pinging when the motor get hotter (a problem I had and solved just last year as explained below).
HISTORY: Last year I had the pinging with no CEL and no codes displayed. After messing around for months trying to resolve the "pinging" issue, I finally took to a shop and they replaced the DPFE sensor which completely cured my pinging - so my DPFE sensor is only one year old. Now, a year later, the pinging has seriously returned and I'm getting the CEL and above mentioned codes which all seem to be EGR related.
DONE SO FAR: I've only visually checked the vaccum lines and wiring on the DPFE, EGR Valve, and the EVP solenoid. They appear fine. No removal or testing of individual components. Have not removed the EGR valve to check for carbon build up.
QUESTION: I checked with CarQuest locally and with discount can getthe DPFE, EGR Valve, and EVP solenoid for about $155 which seems exceptionally reasonable after reading related threads. I'm tempted to just buy the three major components, take all three off the Explorer, clean things up and look for carbon in the EGR Valve ports/holes, put on new parts and take a run with my fingers crossed. Does this sound reasonable way to proceed? I hear that the EGR Valve seldom is the actual problem; however, once I've taken the time to get it off and replace the gasket - for $58 bucks it seems prudent to replace at 140K. Since the DPFE is only one year old, perhaps the most likely culprit is the EVP solenoid (what CarQuest calls a "position sensor solenoid" - however, I've read nothing about the solenoid being a lkely cause.
I can take the parts off and try and figure out, or have someone help me, individually test them, or I can just replace at what I'm thinking is a very reasonable $155. Would very much appreciate more experienced folks suggestion.
P.S. - It looks to me like the large exhaust hose going to the EGR Valve is solid (not flexible). Attaches to the EGR Valve with large nut fitting. Can the EGR Valve be removed by just loosening the hose nut and EGR mounting bolts? Is it a difficult task? I will of course soak the hose nut and bolts with some penitrating oil a day or two in advance (I know just a little).
Many thanks.
Welcome to contact me PM at seamansjones@hotmail.com