Oil Pan and Pump removal and installation

Tiny
ANTHONY ALOI
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Joe,

I think we went down this road before. According to my Innova Codes, there are two listings for code 538. One is for the issue you are referring to and one is labeled (Trucks Only) "Invalid cylinder balance test due to throttle movement during test". And I never touched the throttle.
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Wednesday, April 13th, 2022 AT 11:38 AM
Tiny
ANTHONY ALOI
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Joe,
I may have solved this or at least part of it. Just for fun, and since it's been stuck in the back of my mind, I removed the PCM. I took the cover off and found that two of the capacitors have corroded legs and have broken connections to the circuit board. Rather than trying to change them and since the other components are 30 years old, I was considering a remanufactured one. Are Cardone's reliable or do you prefer other options? Some companies that came up on a search have horrible reviews and terrible BBB ratings.

Thanks,
Tony
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Wednesday, April 13th, 2022 AT 1:58 PM
Tiny
JACOBANDNICKOLAS
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Hi,

That does sound like a problem. As far as the company you mentioned, I never dealt with them. About a year ago, I found a cracked solder joint in the PCM of my own vehicle. It drove me nuts. LOL I did end up purchasing a plug-and-play PCM online and to my surprise, it worked perfectly and still does. For the life of me, I can't remember the name of the place. If you want, I can see if the site owner remembers because he recommended them to me.

Let me know.

Joe
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Wednesday, April 13th, 2022 AT 6:41 PM
Tiny
ANTHONY ALOI
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That would be a great help Joe. Thanks.
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Thursday, April 14th, 2022 AT 6:18 AM
Tiny
JACOBANDNICKOLAS
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Hi,

He couldn't remember either. LOL I dug through all my emails. I finally found it back in May of 2020. Here it is. See if they have what you need.

https://www.carcomputerexchange.com

Take care,

Joe
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Thursday, April 14th, 2022 AT 7:17 PM
Tiny
ANTHONY ALOI
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Thanks Joe,
I'll keep you posted.
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Friday, April 15th, 2022 AT 5:46 AM
Tiny
ANTHONY ALOI
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Hey Joe,

Put in remanufactured ECU/PCM. The good news is that there are no codes, and the transmission is acting normal again. But I still have that rough idle and stuttering on initial acceleration. It seems okay at speed, or at least I can't tell. I even replaced the MAP sensor. I feel like I'm chasing a ghost.
I've read on a Ford Truck forum, others who have the same symptoms. They replaced every sensor, plugs, wires and controllers and still have the problem.
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Tuesday, April 19th, 2022 AT 12:54 PM
Tiny
JACOBANDNICKOLAS
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Hi,

First, I'm glad to know some of the issues are now resolved. We need to get this rough idle/acceleration issue taken care of.

Is the idle rough if the vehicle is in park or neutral?

Also, where did you get the PCM? Was it a plug and play?

Let me know.

Joe
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Tuesday, April 19th, 2022 AT 5:39 PM
Tiny
ANTHONY ALOI
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Hey Joe,

The PCM was a "plug and play". The roughness/stumble is in all trans modes, and I feel it throughout the RPM range.

I never removed the IAC when I removed the intake plenum/throttle body, so I took that off to visually check the valve and spring. It was pretty carbon covered so I decided to replace it since I had it off, plus there were a couple of vacuum lines from the throttle body that were in bad shape, so I replaced them also. I rechecked the vacuum, 18" and steady. Well, it now idles worse than before.
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Thursday, April 21st, 2022 AT 12:44 PM
Tiny
JACOBANDNICKOLAS
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Hi,

When you had the IAC off, did you inspect where it mounts on the throttle body to make sure there is nothing causing a restriction?

Also, are there any new codes since it started running worse?

Let me know.

Joe
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Thursday, April 21st, 2022 AT 4:33 PM
Tiny
ANTHONY ALOI
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Joe, I didn't look into the TB. And no Codes except when I run the KOER test, I still get a 538 on the first test and not on any subsequent test. Could this be an injector issue and not throw a code?
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Friday, April 22nd, 2022 AT 6:33 AM
Tiny
JACOBANDNICKOLAS
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I would think you would get a misfire code as well if it was a faulty injector. Also, do I understand correctly that the IAC was replaced?

If it was and you didn't check inside where it mounts to the throttle body, there could be a restriction there.

Also, if you could, take a pic or two of the vacuum hoses that you replaced so I can determine if there is an issue there. It doesn't make sense that it runs worse.

Let me know.

Joe
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Friday, April 22nd, 2022 AT 6:18 PM
Tiny
ANTHONY ALOI
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Hey Joe, I took off the IAC valve and inspected inside with a borescope. I can't see anything. I've attached some pics of this and of the vacuum lines I replaced. They are from the vapor canister (starting at a Y fitting) to upper and lower ports on throttle body on the driver side.
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Monday, April 25th, 2022 AT 1:17 PM
Tiny
JACOBANDNICKOLAS
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Wow, I think that's the cleanest one I've ever seen. LOL And there are still no codes related to the engine? Just for curiosity, how many miles have you driven the vehicle since the PCM was replaced?

Let me know.

Joe
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Monday, April 25th, 2022 AT 6:23 PM
Tiny
ANTHONY ALOI
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No codes. I'd say I drove about 10 miles since I installed the PCM.
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Tuesday, April 26th, 2022 AT 6:23 AM
Tiny
JACOBANDNICKOLAS
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Has there been any change after the 10 miles (better / worse)? I'm just wondering if it is running a relearn of some sort.

Joe
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Tuesday, April 26th, 2022 AT 5:27 PM
Tiny
ANTHONY ALOI
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Joe,

No change. Since the roughness seems rhythmic and not random, I'm leaning toward a plug, wire, cap or injector. I pulled all the plugs this time and seven look good, only one (cylinder 8) seems fouled. I'm attaching a photo. Let me know your thoughts.
Also, the plugs I pulled, Motorcraft AGSF 32C, are not the correct plugs for this 5.8l motor. Per my owner's manual they are supposed to be ASF 32C. While they are both copper electrode plugs, the threaded ends look to be different lengths. At least what a photo of the correct plug shows. I ordered a platinum tip Motorcraft replacement SP-501 which is supposed to be an upgrade to the ASF 32C.
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Wednesday, May 4th, 2022 AT 1:44 PM
Tiny
JACOBANDNICKOLAS
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Hi,

In the picture, I see two plugs. The cleaner one looks normal. The corroded one has me a bit concerned. That appears to be either oil-fouled or coolant-fouled. Did you ever notice any blue smoke from the exhaust or if the coolant gets low?

Take a look through this link specifically at step 2. Read through it and let me know your thoughts.

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

Keep in mind that cylinder 8 is one of the furthest back from the water pump. As a result, they tend to run hotter. This can cause wear to occur faster than in the forward cylinders.

Regardless, let me know your thoughts.

Take care,

Joe

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Wednesday, May 4th, 2022 AT 7:21 PM
Tiny
ANTHONY ALOI
  • MEMBER
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Joe,

All the other plugs look the same as the one good one in the photo. The carbon fouled looking plug was not wet, although it hasn't been run in a while.

I have never seen any smoke from the exhaust or smelling gas or coolant.

I don't have a coil on the plug ignition system, as demonstrated in your linked video and test procedures. I can't swap any plugs now since I broke 2 getting them all out. I
had such a hard time getting them to turn. I thought they were seized. They have been there for about 15 years (30,000 miles). I had to use a 1/2" impact through the fender well on two, hence the breakage. I should have the new ones tomorrow. I'll also try and scope the cylinder.
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Thursday, May 5th, 2022 AT 1:25 PM
Tiny
JACOBANDNICKOLAS
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Hi,

Wow, they must have been tight. Regardless, let me know what happens and if the new plugs take care of the issues. I'm interested in knowing.

Take care,

Joe
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Thursday, May 5th, 2022 AT 8:20 PM

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