Code 33, 32 (EGR) woes!!!
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Code 33, 32 (EGR) woes!!!
Truck began running like crap a couple weeks ago, low power, unstable idle, possible pinging, really sensitive on/off idle power delivery (terrible for a stick), etc.
Pulled the codes, had a 33 /1/ 33, so its in both my continuous and KOEO memory. Tried clearing it by pulling the wire while test was in progress and they wont clear.
Anyway, been dealing with the poor drivability and was trying to trouble shoot it before I had to tow a camper, but the day came and I had to tow it with it acting up. Engine even died after a start while engine warm just before towing the camper.
Got it on the highway, took all the power to even keep it at 55. This is a 351 with highway gears though. Took the trailer about 40 miles, mostly in 4th gear at 55mph, 2Krpm, had to down shift to 3rd, 3Krpm to make it up a hill on the interstate. The frontal area was probably above 60 sqFT limit, more like 100, and there was a head wind. slow...
The funny thing is, after that, its running fine, idling better, but still throwing the codes?!?!?!?!
Checked today, it had changed to 33/1/32 32? Cleared it and its back to 33/1/33 33. Why is it giving me the KOEO code twice now?
My Chiltons says the 33 is:EGR valve opening not detected
And 32 is: EVP voltage below closed limit
Obviously an EGR issue, but what should I do?
Pulled the codes, had a 33 /1/ 33, so its in both my continuous and KOEO memory. Tried clearing it by pulling the wire while test was in progress and they wont clear.
Anyway, been dealing with the poor drivability and was trying to trouble shoot it before I had to tow a camper, but the day came and I had to tow it with it acting up. Engine even died after a start while engine warm just before towing the camper.
Got it on the highway, took all the power to even keep it at 55. This is a 351 with highway gears though. Took the trailer about 40 miles, mostly in 4th gear at 55mph, 2Krpm, had to down shift to 3rd, 3Krpm to make it up a hill on the interstate. The frontal area was probably above 60 sqFT limit, more like 100, and there was a head wind. slow...
The funny thing is, after that, its running fine, idling better, but still throwing the codes?!?!?!?!
Checked today, it had changed to 33/1/32 32? Cleared it and its back to 33/1/33 33. Why is it giving me the KOEO code twice now?
My Chiltons says the 33 is:EGR valve opening not detected
And 32 is: EVP voltage below closed limit
Obviously an EGR issue, but what should I do?
Post Fiend
Joined: Apr 2004
Posts: 6,473
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From: Lafayette, IN
If this is the truck in your sig, you have 3-digit codes, not 2.
Try again and get back to us, though I suspect that your code 33s are actually code 111s (they repeat...), which are "all clear" codes.
Jason
Try again and get back to us, though I suspect that your code 33s are actually code 111s (they repeat...), which are "all clear" codes.
Jason
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My 97 is one of those transitional years, the last of the boxy body style for the 250 Heavy Duty, is it possible that this is why I don't have 3 digit trouble codes? it is not OBD-2, and there is only one oxygen sensor.
The EEC-IV system (OBD-1) Had trouble codes ranging from 11 to 998 (according to my chilton), so it does have some three digit codes. I got a couple when I unplugged the vacuum hose from the EGR while testing. 332 and 334, both EGR codes. they went away when I plugged it back in. Now I am back to 33/1/33 and then a second 33 after a short pause.
It may be OBD-1 because the heavy duty trucks, or maybe just the 250s, 350,s etc hadn't moved to OBD-2 yet?
I might as well ask if anyone has an opinion on block off kits because I don't want this issue to return.
The EEC-IV system (OBD-1) Had trouble codes ranging from 11 to 998 (according to my chilton), so it does have some three digit codes. I got a couple when I unplugged the vacuum hose from the EGR while testing. 332 and 334, both EGR codes. they went away when I plugged it back in. Now I am back to 33/1/33 and then a second 33 after a short pause.
It may be OBD-1 because the heavy duty trucks, or maybe just the 250s, 350,s etc hadn't moved to OBD-2 yet?
I might as well ask if anyone has an opinion on block off kits because I don't want this issue to return.
Senior User
Joined: Aug 2011
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From: Naples, FL
I'm leaning to agree with the above...seems all clear to me if the truck runs fine now. Mine is sometimes running like crap and I don't get codes either besides 111s
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Elder User
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So, you think my truck told me 111 (5 seconds) 1 (5 seconds) 111 (1 second) 111 (3 seconds) 111 (1 second) 111. why would it tell me 111 so many times?
Hopefully you can see why I think its 33/1/33,33. I think I just need to find a OBD-1 code reader, getting tired of counting flashing engine light!
Hopefully you can see why I think its 33/1/33,33. I think I just need to find a OBD-1 code reader, getting tired of counting flashing engine light!
Senior User
Joined: Aug 2011
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From: Naples, FL
Counting flashes can be annoying. Lets settle this by waiting to see your results with a scan tool! Agreed?!
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From: Kentucky
Post Fiend
Joined: Apr 2004
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From: Lafayette, IN
I thought it began with the '92 model year (which would have been in production in '91), but either way, a '97, as the OP has, will have 3-digit codes, unless it some sort of bass-ackwards frankentruck.
Jason
Jason
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From: Kentucky
I agree with your last statement, the OP's truck should display 3 digit codes. That also answers the question of why these "codes" keep reappearing after a reset.
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Ok, I apologize for the confusion and please forgive my ignorance... 
My chilton makes no differentiation between 2 digit and 3 digit codes, they are all on the same list in numerical order.
According to oldfuelinjection, I have EEC-IV which IS OBD-2, but not the standardized OBD-2 you can use a standard code reader on that uses POXXXX codes. Correct? what year of these trucks went to PO codes? My trucks hood sticker does not specify OBD-1 or 2, just that it meets requirements for 1997 heavy duty engines.
Since I get three digit codes when I jump the wires, my codes I have been reading are in fact code 111, which repeats itself, giving me 111,111/1/111,111 and this is a completely normal read? sometimes it does not repeat the first continuous memory code: like 111/1/111,111
Can anyone recommend a good code reader that will work for my oddball system. I already have two standard obd-2 readers for newer vehicles. My drivability issues must mean I need a tuneup (in the process of) unless I am missing something.
Again, thanks for clearing this up for me!
My chilton makes no differentiation between 2 digit and 3 digit codes, they are all on the same list in numerical order.
According to oldfuelinjection, I have EEC-IV which IS OBD-2, but not the standardized OBD-2 you can use a standard code reader on that uses POXXXX codes. Correct? what year of these trucks went to PO codes? My trucks hood sticker does not specify OBD-1 or 2, just that it meets requirements for 1997 heavy duty engines.
Since I get three digit codes when I jump the wires, my codes I have been reading are in fact code 111, which repeats itself, giving me 111,111/1/111,111 and this is a completely normal read? sometimes it does not repeat the first continuous memory code: like 111/1/111,111
Can anyone recommend a good code reader that will work for my oddball system. I already have two standard obd-2 readers for newer vehicles. My drivability issues must mean I need a tuneup (in the process of) unless I am missing something.
Again, thanks for clearing this up for me!
Fleet Owner
Joined: Oct 2005
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From: Kentucky
The EEC-IV PCM is OBD-I. It will not display OBD-II based P0XXX codes. Lighter duty trucks (F150, Bronco, etc.) went to EEC-V OBD-II control systems in 1996. California emission, and a select few Federal areas, F250/350 trucks went to the EEC-V OBD-II system in 1996 as well. This is why there is some confusion if a 1996/97 model year F250/350 is OBD-I or OBD-II.
The Equus 3145 code reader works very well on your EEC-IV equipped truck.
The Equus 3145 code reader works very well on your EEC-IV equipped truck.
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Right, different sources will say they are OBD-I and others OBD-II. I think its quite clear that its OBD-I since it only has the pre-cat O2 Sensor, and the old style OBD-I connector ports.
The Chilton mentions that "All 95 and 96 diesel and some 96 gasoline engines (depending on engine application) will be equipped with EEC-V."
So, Since not all 96 vehicles had been switched over, is it possible that, depending on application, not all 97 vehicles had been equipped with V as well?
Its a federal emissions truck, Manufacture date of 04/97.
The Chilton mentions that "All 95 and 96 diesel and some 96 gasoline engines (depending on engine application) will be equipped with EEC-V."
So, Since not all 96 vehicles had been switched over, is it possible that, depending on application, not all 97 vehicles had been equipped with V as well?
Its a federal emissions truck, Manufacture date of 04/97.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Right, different sources will say they are OBD-I and others OBD-II. I think its quite clear that its OBD-I since it only has the pre-cat O2 Sensor, and the old style OBD-I connector ports.
The Chilton mentions that "All 95 and 96 diesel and some 96 gasoline engines (depending on engine application) will be equipped with EEC-V."
So, Since not all 96 vehicles had been switched over, is it possible that, depending on application, not all 97 vehicles had been equipped with V as well?
Its a federal emissions truck, Manufacture date of 04/97.
The Chilton mentions that "All 95 and 96 diesel and some 96 gasoline engines (depending on engine application) will be equipped with EEC-V."
So, Since not all 96 vehicles had been switched over, is it possible that, depending on application, not all 97 vehicles had been equipped with V as well?
Its a federal emissions truck, Manufacture date of 04/97.
My information comes straight from Ford, I disregard most of the internet-based conjecture.