Ok, so I've read almost every single PCM fuse issue thread out there but no one ever really said how they fixed it or what the problem ended up being. So before you tell me to search...I already have!
The normal **** happened when the PCM fuse blows -- the car was running, but it sputtered to a stop. So my initial thought was the fuel electrical system. Turns out after a little research, apparently my problem can be a lot worse.
So now anytime I turn the key position to On, it tries to blow the fuse. (I've gone through 3 fuses and finally decided to hook up the multimeter instead of going through expensive MAXI fuses.
I have a Haynes for 94-03 Mustang and a Chilton for 94-98 Mustangs. So I checked all of the fuses then referred to the manual when I found the blow fuse. Apparently, according to the Chilton, it was my convertible top fuse. But then I realized -- hey, that's not the right diagram for my fuse box! So I did a little research on the fuse box, and it turns out that I have a 99-04 fuse box in my car. WTF? Why would this be?
So I unplugged the CCRM as most threads say, and the short went away. So logically it is past the CCRM, but then again there is only 1 connector on the CCRM, so how can one say it is "past" the CCRM?
The PCM fuse just blew 2 days ago. A little history over the past month -- a few weeks ago, the A/C clutch seized up so I bought a new belt to bypass it. Then a few days after that I was tired of my CEL being on (aka I need to get the car inspected) so I crawled under my car and removed the MIL eliminators that I had before (the connector on one of them melted) -- my car was throwing P0171 and P0174 -- and then I wired up my own MIL eliminators based on some specs online. Car still threw P0171 and P0174. So I said **** it, whatever, I don't want to mess with it anymore. Now 2 days ago, the car sputtered to a stop. My fiancé described it as the feeling of "you run out of gas." So I drive down to Waco (where she is stranded) to see about the issue. I get there, check the fuel pressure (result: none), check the codes (result: P0171 and P0174, but sometimes said "error" [this is because it could not communicate with the computer), and also checked the fuses. My #26 fuse is bad -- the PCM fuse. So I took the 20A right below it and plugged it into #26 spot and BAM, popped immediately (key was in on position). So I said we'll just tow it back to the house tomorrow (1.5 hours away) and then we'll work on it there.
I just started researching the PCM fuse issue after I did my fuse box research -- I still don't know why my 1998 Mustang GT has a 1999+ fuse box. My PCM research led to many different things, but no solutions.
1) I know there is a short somewhere.
2) My fuse box is a 99+ fuse box.
3) The fuse being blown is #26 -- it blows as soon as you turn the key to on position
4) I've unplugged the CCRM and the fuse lasted. Plugged back in - pop.
5) I'd really like to trace the short myself, but not exactly sure where all to look
6) I've unplugged all of the O2 sensors and the short is still there.
7) When I took the fender-well out, I noticed there is what appears to be a break line broken. I believe this to be a whole different issue. I previously thought it was my rear driver-side piston leaking fluid (I had to refill every other day) -- so I have a new one waiting to be put on.
8) I really hope you read all of this, but I completely understand if you don't.
9) I'm tired of typing, and my brain is scattered, so this post may not make a lick of sense.
10) Thanks for sticking with me through my issues -- you are a true friend!
So if you understood that, any help would be appreciated. Any questions you have, please ask. I will answer as best as possible.
P.S. I love you [stangnet].
The normal **** happened when the PCM fuse blows -- the car was running, but it sputtered to a stop. So my initial thought was the fuel electrical system. Turns out after a little research, apparently my problem can be a lot worse.
So now anytime I turn the key position to On, it tries to blow the fuse. (I've gone through 3 fuses and finally decided to hook up the multimeter instead of going through expensive MAXI fuses.
I have a Haynes for 94-03 Mustang and a Chilton for 94-98 Mustangs. So I checked all of the fuses then referred to the manual when I found the blow fuse. Apparently, according to the Chilton, it was my convertible top fuse. But then I realized -- hey, that's not the right diagram for my fuse box! So I did a little research on the fuse box, and it turns out that I have a 99-04 fuse box in my car. WTF? Why would this be?
So I unplugged the CCRM as most threads say, and the short went away. So logically it is past the CCRM, but then again there is only 1 connector on the CCRM, so how can one say it is "past" the CCRM?
The PCM fuse just blew 2 days ago. A little history over the past month -- a few weeks ago, the A/C clutch seized up so I bought a new belt to bypass it. Then a few days after that I was tired of my CEL being on (aka I need to get the car inspected) so I crawled under my car and removed the MIL eliminators that I had before (the connector on one of them melted) -- my car was throwing P0171 and P0174 -- and then I wired up my own MIL eliminators based on some specs online. Car still threw P0171 and P0174. So I said **** it, whatever, I don't want to mess with it anymore. Now 2 days ago, the car sputtered to a stop. My fiancé described it as the feeling of "you run out of gas." So I drive down to Waco (where she is stranded) to see about the issue. I get there, check the fuel pressure (result: none), check the codes (result: P0171 and P0174, but sometimes said "error" [this is because it could not communicate with the computer), and also checked the fuses. My #26 fuse is bad -- the PCM fuse. So I took the 20A right below it and plugged it into #26 spot and BAM, popped immediately (key was in on position). So I said we'll just tow it back to the house tomorrow (1.5 hours away) and then we'll work on it there.
I just started researching the PCM fuse issue after I did my fuse box research -- I still don't know why my 1998 Mustang GT has a 1999+ fuse box. My PCM research led to many different things, but no solutions.
1) I know there is a short somewhere.
2) My fuse box is a 99+ fuse box.
3) The fuse being blown is #26 -- it blows as soon as you turn the key to on position
4) I've unplugged the CCRM and the fuse lasted. Plugged back in - pop.
5) I'd really like to trace the short myself, but not exactly sure where all to look
6) I've unplugged all of the O2 sensors and the short is still there.
7) When I took the fender-well out, I noticed there is what appears to be a break line broken. I believe this to be a whole different issue. I previously thought it was my rear driver-side piston leaking fluid (I had to refill every other day) -- so I have a new one waiting to be put on.
8) I really hope you read all of this, but I completely understand if you don't.
9) I'm tired of typing, and my brain is scattered, so this post may not make a lick of sense.
10) Thanks for sticking with me through my issues -- you are a true friend!
So if you understood that, any help would be appreciated. Any questions you have, please ask. I will answer as best as possible.
P.S. I love you [stangnet].