94 ps missing
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From: West Texas
94 ps missing
I can't remember how this junk works. I just put my code flasher on the truck because it was missing pretty bad today. Got a code 942 on the power ballance test.
On the buzz test the second buzz was really weak.
Ideas?
Does the 942 mean the second cylinder in the firing order or number 2 cylinder? That's the most important question I have.
I sure hope it's just the UVC harness on that one. I can't afford any more money going out this month at all!
On the buzz test the second buzz was really weak.
Ideas?
Does the 942 mean the second cylinder in the firing order or number 2 cylinder? That's the most important question I have.
I sure hope it's just the UVC harness on that one. I can't afford any more money going out this month at all!
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From: West Texas
I got into it and it's not my valve cover gasket or the uvc harness. No oil at all is coming out of number 2 injector. It's not buzzing on the buzz test either.
I pulled the injector and ohmed it between the two pins and got 3.7 ohms. I can't find the specs.
Is it pretty safe to assume the injector is bad or should I test the IDM? I'm not sur ehow to test voltage at the injector wire harness.
If it's the injector gone bad then I need to do some swapping with my wifes 97. Hers is a california model with AB injectors.
My 94 has AO injectors.
Am I correct that all I need to replace with them is the pcm?
I pulled the injector and ohmed it between the two pins and got 3.7 ohms. I can't find the specs.
Is it pretty safe to assume the injector is bad or should I test the IDM? I'm not sur ehow to test voltage at the injector wire harness.
If it's the injector gone bad then I need to do some swapping with my wifes 97. Hers is a california model with AB injectors.
My 94 has AO injectors.
Am I correct that all I need to replace with them is the pcm?
Postmaster
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From: Levittown
While you are at it check the air gap (feeler gauge) under the plate on the inj
you believe to be bad. At .001 its nearing the end of its life. Also keep it in mind that it still could be a wiring issue. It needs to be tested all the way back to the IDM.
DO NOT TOUCH THE 97! You will open a can of worms.
The code you pulled is a gen code and does not apply to you.
Bill
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I will add
While you are at it check the air gap (feeler gauge) under the plate on the inj
you believe to be bad. At .001 its nearing the end of its life. Also keep it in mind that it still could be a wiring issue. It needs to be tested all the way back to the IDM.
DO NOT TOUCH THE 97! You will open a can of worms.
The code you pulled is a gen code and does not apply to you.
Bill
While you are at it check the air gap (feeler gauge) under the plate on the inj
you believe to be bad. At .001 its nearing the end of its life. Also keep it in mind that it still could be a wiring issue. It needs to be tested all the way back to the IDM.
DO NOT TOUCH THE 97! You will open a can of worms.
The code you pulled is a gen code and does not apply to you.
Bill
From Excavator:
After valve covers are off you can start engine and watch each oil spout. They should all spit out the same amount of oil. I check this cold and warm as it could make a difference.
Any not spitting out the same is suspect. You can then pull off 4 screws on top of injector and remove the solenoid. Next lift off the square spacer. In dead center is poppet screw and you can check if tight. If loose that will cause a miss. You can measure the armature plate clearance with a .002 inch feeler by sliding feeler under armature plate (square plate). New injector is .004 and if a .002 in feeler will not slide in then the injector needs to be remachined
After valve covers are off you can start engine and watch each oil spout. They should all spit out the same amount of oil. I check this cold and warm as it could make a difference.
Any not spitting out the same is suspect. You can then pull off 4 screws on top of injector and remove the solenoid. Next lift off the square spacer. In dead center is poppet screw and you can check if tight. If loose that will cause a miss. You can measure the armature plate clearance with a .002 inch feeler by sliding feeler under armature plate (square plate). New injector is .004 and if a .002 in feeler will not slide in then the injector needs to be remachined
Postmaster
Joined: Feb 2004
Posts: 3,266
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From: Levittown
After valve covers are off you can start engine and watch each oil spout. They should all spit out the same amount of oil. I check this cold and warm as it could make a difference.
Any not spitting out the same is suspect. You can then pull off 4 screws on top of injector and remove the solenoid. Next lift off the square spacer. In dead center is poppet screw and you can check if tight. If loose that will cause a miss. You can measure the armature plate clearance with a .002 inch feeler by sliding feeler under armature plate (square plate). New injector is .004 and if a .002 in feeler will not slide in then the injector needs to be remachined ....
Any not spitting out the same is suspect. You can then pull off 4 screws on top of injector and remove the solenoid. Next lift off the square spacer. In dead center is poppet screw and you can check if tight. If loose that will cause a miss. You can measure the armature plate clearance with a .002 inch feeler by sliding feeler under armature plate (square plate). New injector is .004 and if a .002 in feeler will not slide in then the injector needs to be remachined ....
I hope your home and not at the shop now!!!!!!!!!!!!
Bill Blue
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Joined: Aug 2006
Posts: 10,764
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.....Still at the Shop ....
Time to go ....
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Posting Guru
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From: West Texas
I put the injector back in and swapped solenoids with the one next to it. At first it was working on the buzz test. Then retested it and it didn't buzz. Will redo it tomorrow to see.
The 97 is down in the garage right now while I make a flatbed for it. Plan to be down till spring. It shouldn't be any big deal swapping injectors and pcm I thought. I already robbed the turbo off it. Not much choice since I'm about broke after my wells both died at nearly the same time.
The Ford manual I have is on cd and is for 96 to 99. My 94 uses different codes than that manual has and it's no help. Anyone have a diagram of what wires to check back to the IDM to see if the harness is good on a 94?
The code I pulled was for the number 2 cylinder not working. Not sure what a gen code is but that's the code I got when I did the cylinder distribution test. Buzz test failed on that one too. I know the wiring harness is messed up to the back two cylinders on that side but it is working on those two. It was spliced before I got it under the turbo intake boot. I need to check the idm I guess. Just need to know how without the proper book.
The 97 is down in the garage right now while I make a flatbed for it. Plan to be down till spring. It shouldn't be any big deal swapping injectors and pcm I thought. I already robbed the turbo off it. Not much choice since I'm about broke after my wells both died at nearly the same time.
The Ford manual I have is on cd and is for 96 to 99. My 94 uses different codes than that manual has and it's no help. Anyone have a diagram of what wires to check back to the IDM to see if the harness is good on a 94?
The code I pulled was for the number 2 cylinder not working. Not sure what a gen code is but that's the code I got when I did the cylinder distribution test. Buzz test failed on that one too. I know the wiring harness is messed up to the back two cylinders on that side but it is working on those two. It was spliced before I got it under the turbo intake boot. I need to check the idm I guess. Just need to know how without the proper book.
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Postmaster
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From: Levittown
The code you posted is a generic transmission code.
IDM codes are in the P02?? or P12??
Cyl #2 tests could be 0264, 0265, 0266, 1262, 1272, 1292 ect
Possible the code was 294? That is a high side open ckt code
Bill
IDM codes are in the P02?? or P12??
Cyl #2 tests could be 0264, 0265, 0266, 1262, 1272, 1292 ect
Possible the code was 294? That is a high side open ckt code
Bill
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From: West Texas
You do realize this is an eec-4 computer right. It's a 94 standard transmission with 3 digit codes that I retrieved with an old code flasher. It's different than the 95 and up. I hope I am using the right code sheet.
Postmaster
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From: Levittown
You do realize the code is generated from the IDM not the pcm right.
Bill
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From: West Texas
I didn't know they came from the IDM. Thanks.
I just swapped the IDM and whole wiring harness. The harness was chewed by rats and repaired under the turbo where it goes to the valve cover gasket so I thought might as well replace it. I had a new harness in my closet anyway.
It starts up better but miss is still there. I may not have the air all purged out yet though since I had a long crank time this morning. I had one injector out yesterday.
I just ran the KOEO test on it and here are the results.
111 111
512 512
911 911
911 911
I think I got the 512 from having the batteries disconnected while replacing the harness. Is that right?
I would really appreciate the proper code sheet for the 94 powerstroke if anyone has one. I appreciate all the help so far too. Thanks a lot.
I really doubt the injectors are bad but it was acting like an electrical problem. Buzz test just now passed and they all sounded about the same. I also know I need to replace the orings real bad after seeing that one. I only replaced them on the one I pulled so far.
This came up real sudden though leading me away from o rings as the root cause of the miss. One day it was running perfect, the next missing like mad and barely driveable.
We're getting there though.
I just swapped the IDM and whole wiring harness. The harness was chewed by rats and repaired under the turbo where it goes to the valve cover gasket so I thought might as well replace it. I had a new harness in my closet anyway.
It starts up better but miss is still there. I may not have the air all purged out yet though since I had a long crank time this morning. I had one injector out yesterday.
I just ran the KOEO test on it and here are the results.
111 111
512 512
911 911
911 911
I think I got the 512 from having the batteries disconnected while replacing the harness. Is that right?
I would really appreciate the proper code sheet for the 94 powerstroke if anyone has one. I appreciate all the help so far too. Thanks a lot.
I really doubt the injectors are bad but it was acting like an electrical problem. Buzz test just now passed and they all sounded about the same. I also know I need to replace the orings real bad after seeing that one. I only replaced them on the one I pulled so far.
This came up real sudden though leading me away from o rings as the root cause of the miss. One day it was running perfect, the next missing like mad and barely driveable.
We're getting there though.
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Posting Guru
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From: West Texas
I almost forgot, I don't know the sequence of events for the KOER test on this one either. I'm spoiled with the Scanners we had at the Ford dealers and honestly I can't remember working on any 94s there. I was good with the later obd2 ones.
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From: Levittown
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