New Code Scanner Arrived!!! YAHOO!!
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New User
Joined: Apr 2008
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New Code Scanner Arrived!!! YAHOO!!
After being baffled by my F350 7.5L Gas giving me trouble, I decided to take the bull by the horns and went shopping for a code scanner.
I wanted one which would work on my 94 F350 (EEC IV) as well as OBDII. Bought a nice scanner, MSRP $460 and paid $193 at Amazon.com.
Went out today, hooked it up and started testing.
The problem has been intermittent. The check engine light will come on and it begin running really rough. No power, and if I accelerate, hardly no power, pops etc.
According to the scanner, while the issue is ocurring, I get the following:
P0001 Fuel volume regulator circuit/Open
Now I just need to figure out where that circuit is so I can check it out. Any pointers would be appreciated!
Oh yeah, the scanner I bought was the Innova Equus 3140. Even included PC software and all cables for OBDI (EEC IV) and OBDII. Cooool.....
I wanted one which would work on my 94 F350 (EEC IV) as well as OBDII. Bought a nice scanner, MSRP $460 and paid $193 at Amazon.com.
Went out today, hooked it up and started testing.
The problem has been intermittent. The check engine light will come on and it begin running really rough. No power, and if I accelerate, hardly no power, pops etc.
According to the scanner, while the issue is ocurring, I get the following:
P0001 Fuel volume regulator circuit/Open
Now I just need to figure out where that circuit is so I can check it out. Any pointers would be appreciated!
Oh yeah, the scanner I bought was the Innova Equus 3140. Even included PC software and all cables for OBDI (EEC IV) and OBDII. Cooool.....
Posting Guru
Joined: Jun 2004
Posts: 1,781
Likes: 1
From: Central NY
Ummm... your 94 Ford does not put out 4 digit p-codes. Those are ODB2 (97 and up for the F350's). ie - you don't have a fuel volume regulator circuit. The fuel system is pretty basic; the eec kicks on the fuel pump relay which sends battery voltage to the pump. It does not monitor voltage, fuel pressure, or volume. All it basically knows is the O2 sensors. Lean means increase the injector pulse to add more fuel and rich means to decrease the pulse width for less fuel.
Sorry. Perhaps you don't have the scanner not quite setup correctly for a 94 obd1?
Sorry. Perhaps you don't have the scanner not quite setup correctly for a 94 obd1?
Elder User
Joined: Nov 2004
Posts: 684
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[quote=Popa Tim;8430529]Ummm... your 94 Ford does not put out 4 digit p-codes. Those are ODB2 (97 and up for the F350's).
The epa laws for OBD 2 applys to 1996 and newer, so ford would not have been able to START it in 97. And many manufactures started OBD 2 even b-fore the required 96 year, including ford. Ford should have began it when they first changed to the 92-96 body style.
The epa laws for OBD 2 applys to 1996 and newer, so ford would not have been able to START it in 97. And many manufactures started OBD 2 even b-fore the required 96 year, including ford. Ford should have began it when they first changed to the 92-96 body style.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Popa Tim is right here, OBD-2 only became manditory for passenger cars and light duty trucks(under 8500lb GVWR) in 1996, so in Fords case it didn't happen for the bigger trucks until the new SuperDuty was introduced in the '98 model year. If you search for emissions testing regulations on the web you'll find the GVWR exemption clearly stated.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
All of what you stated is right except all of the OBD-I trucks do monitor the voltage to the fuel pumps from 1989 on.
Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
The bottom line is that his truck is a 1994 F-350 so it's OBD-I. It does not give out p-4 digit codes, and 001 is not a real code for an OBD-I system. So OP... you need to read the manual and try to pull the codes again because what you have now is not helping you diagnose your problem.
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Elder User
Joined: Nov 2004
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Do you have the obd connector under the dash just to the right of center?
My dad's 97 350 CATERING TRUCK has obd 2, I know there are exceptions for the larger vehicles but just because they did not have to start until 98 or 97 does not mean that they waited till then. I have scanned my dad's 97 OBD2 system, and I thought I have scanned earlier ford trucks with OBD2. I know I have scanned obd 2 in other cars as early as 93.
My dad's 97 350 CATERING TRUCK has obd 2, I know there are exceptions for the larger vehicles but just because they did not have to start until 98 or 97 does not mean that they waited till then. I have scanned my dad's 97 OBD2 system, and I thought I have scanned earlier ford trucks with OBD2. I know I have scanned obd 2 in other cars as early as 93.
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Wow....Thanks for all the replies guys!
You're right, P0001 would be OBDII, have no idea why it is picking this up on OBDI testing. I'll rerun the diagnostics in the morning and see what it does.
Here's what I have besides the P0001 code.
412: Cannot control RPM during KOER high RPM check
172: HEGO (HO2S) sensor fault/lean
538: Invalid cylinder balance test due to throttle movement during test
632: Overdrive Transmission Cancel Switch/ no action during self engine run test (My fault for not paying attention to the scanner-NO PROBLEM)
Reading some other posts, I realize I've been taking an exhaust leak for granted. I have a leak somewhere near the pass. side manifold.
Since I've already purchased a Fuel Pressure Guage I will check the pressure at the fuel rail in the morning first while it is exhibiting the problem. Either way I need to get the exhaust leak fixed.
Thanks for the input guys. Once I get through all of these issues above I will be sure and report back.
Here's what I have besides the P0001 code.
412: Cannot control RPM during KOER high RPM check
172: HEGO (HO2S) sensor fault/lean
538: Invalid cylinder balance test due to throttle movement during test
632: Overdrive Transmission Cancel Switch/ no action during self engine run test (My fault for not paying attention to the scanner-NO PROBLEM)
Reading some other posts, I realize I've been taking an exhaust leak for granted. I have a leak somewhere near the pass. side manifold.
Since I've already purchased a Fuel Pressure Guage I will check the pressure at the fuel rail in the morning first while it is exhibiting the problem. Either way I need to get the exhaust leak fixed.
Thanks for the input guys. Once I get through all of these issues above I will be sure and report back.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
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From: Easton,Ks
Start off with the 1 is a space and most reader call it a 10.
Your truck with a 460 does not have the 538 Invalid cylinder balance test as it is a bank injected engine.
I would suggest you put that scanner up some place and get a paper clip and short the STI wire to pin #2 of the test connector, turn on the key and count the flashes on your MIL lamp.
You could also pay about $30.00 and get a good OBD-I code reader, here is a good one.
/
Your truck with a 460 does not have the 538 Invalid cylinder balance test as it is a bank injected engine.
I would suggest you put that scanner up some place and get a paper clip and short the STI wire to pin #2 of the test connector, turn on the key and count the flashes on your MIL lamp.
You could also pay about $30.00 and get a good OBD-I code reader, here is a good one.
/
FTE Chapter Leader
Joined: May 2006
Posts: 12,342
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From: Central Mississippi
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
The 3145 works for $30.00 and it does not sound like the 3140 does for $193.00.
At least the 3145 reads all the OBD-I codes right.
538 is an operator error of not goosing the engine and the 538 only is a KOER code.
I took what he said it was above and did not look it up in the FORD manual.
Even the 3145 book and their site is wrong on codes so I look the codes up in the year of the truck in the Ford shop Manual.
If you do not use the Ford shop manual for that year of the truck you will not get the full meaning of the code and what to do about it.
At least the 3145 reads all the OBD-I codes right.
538 is an operator error of not goosing the engine and the 538 only is a KOER code.
I took what he said it was above and did not look it up in the FORD manual.
Even the 3145 book and their site is wrong on codes so I look the codes up in the year of the truck in the Ford shop Manual.
If you do not use the Ford shop manual for that year of the truck you will not get the full meaning of the code and what to do about it.
FTE Chapter Leader
Joined: May 2006
Posts: 12,342
Likes: 1,315
From: Central Mississippi
I took what he said it was above and did not look it up in the FORD manual.
Even the 3145 book and their site is wrong on codes so I look the codes up in the year of the truck in the Ford shop Manual.
If you do not use the Ford shop manual for that year of the truck you will not get the full meaning of the code and what to do about it.
Even the 3145 book and their site is wrong on codes so I look the codes up in the year of the truck in the Ford shop Manual.
If you do not use the Ford shop manual for that year of the truck you will not get the full meaning of the code and what to do about it.
Good luck with your new tool, 94'SRW. Thanks for posting & the opportunity to discuss scan tools.
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Thanks for all the interesting input!
I'm taking the truck down to the muffler shop to fix the exhaust manifold leak and will have them replace the O2 sensor while they're at it.
I'm very interested to see what the scanner picks up after this repair.
Will keep you posted!
I'm taking the truck down to the muffler shop to fix the exhaust manifold leak and will have them replace the O2 sensor while they're at it.
I'm very interested to see what the scanner picks up after this repair.
Will keep you posted!
New User
Joined: Jun 2011
Posts: 1
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From: Howell, MI
hey 1994srw --
I know this thread is a couple months old but... Question about the exhaust leak. I just purchased a 96 F250, and it has a pretty decent exhaust manifold leak. I am getting the check engine light sporadically.
I found the thread trying to find how to read the codes, (could find a spot to plug in the code reader, nor am I am sure the code reader I have would work with the year of the truck. Haha.
Anyway, I was just wondering if fixing the manifold solved the check engine light.
Also did you have the manifold replaced, if so roughly what did that cost?
Thanks
Jay
I know this thread is a couple months old but... Question about the exhaust leak. I just purchased a 96 F250, and it has a pretty decent exhaust manifold leak. I am getting the check engine light sporadically.
I found the thread trying to find how to read the codes, (could find a spot to plug in the code reader, nor am I am sure the code reader I have would work with the year of the truck. Haha.
Anyway, I was just wondering if fixing the manifold solved the check engine light.
Also did you have the manifold replaced, if so roughly what did that cost?
Thanks
Jay
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