I need pcm help really technical
Thread Starter
|
New User
Joined: Feb 2010
Posts: 21
Likes: 0
I need pcm help really technical
I posted a thread concerning 4 builds and another fried E4OD, and I have narrowed it down to a computer problem. I found on ATRAs site that solenoid 1 grounds when shifted into 1st gear then solenoid 2 grounds for 2nd and then solenoid 1 ungrounds for 3rd and so on. My pcm is grounding solenoid 1 no matter whether in park reverse neutral or drive. This is keeping 1st engaged all the time. I built this tranny and it worked great for 2 days then all of a sudden went to neutral while driving and now has no forward
gears. I unplugged the pcm connector and removed the harness to the tranny and checked each wire for a short to ground and found nothing. I checked the wire coming from the pcm and its grounded all the time. Also no forward with connector unplugged from tranny to check failsafe. So I know the tranny is fried. This is the 3rd pcm reprogrammed from Ford. Can anybody help me? Please?
gears. I unplugged the pcm connector and removed the harness to the tranny and checked each wire for a short to ground and found nothing. I checked the wire coming from the pcm and its grounded all the time. Also no forward with connector unplugged from tranny to check failsafe. So I know the tranny is fried. This is the 3rd pcm reprogrammed from Ford. Can anybody help me? Please?
Postmaster
Joined: Feb 2004
Posts: 3,266
Likes: 0
From: Levittown
The only time SS1 goes in a off state is when it gets a command for 3rd or 4th gear.
A pcm in limp can hold SS1 in a on state.
Clear the faults in the pcm and retest.
Lack of F/R are bigger issues.
Bill
A pcm in limp can hold SS1 in a on state.
Clear the faults in the pcm and retest.
Lack of F/R are bigger issues.
Bill
Thread Starter
|
New User
Joined: Feb 2010
Posts: 21
Likes: 0
The pcm was replaced with a reprogrammed one. The only codes are ebpv malfunction which has been plugged off and keep alive memory error but no check engine light and no overdrive light blinking. Why would ss1 be on in park or reverse or neutral, ss1 is for first gear and second and your right disconnects for 3rd and 4th.?
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Trending Topics
Postmaster
Joined: Feb 2004
Posts: 3,266
Likes: 0
From: Levittown
You just need the time!
The start of it. Op's other tread.
https://www.ford-trucks.com/forums/9...-the-dust.html
Hotrd
You never answered questions in the other tread (pressure testing)
A quick check to see if its pumping is to remove a cooler line and start
it up. This will only tell you that the tc is turning the pump.
As of now you have bigger issues than a possible defective pcm.
Bill
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Postmaster
Joined: Sep 2007
Posts: 4,195
Likes: 6
From: Medford Oregon
Part of first post ...
Put it back in the truck and it worked great for about 20 miles and then my coolant guage to the engine flickered then I lost all forward gears all at once.
I'm auto transmission stupid but that one comment has bothered me and might have some significance, probably not.
,,,
Put it back in the truck and it worked great for about 20 miles and then my coolant guage to the engine flickered then I lost all forward gears all at once.
I'm auto transmission stupid but that one comment has bothered me and might have some significance, probably not.
,,,
Thread Starter
|
New User
Joined: Feb 2010
Posts: 21
Likes: 0
Part of first post ...
Put it back in the truck and it worked great for about 20 miles and then my coolant guage to the engine flickered then I lost all forward gears all at once.
I'm auto transmission stupid but that one comment has bothered me and might have some significance, probably not. ,,,
Put it back in the truck and it worked great for about 20 miles and then my coolant guage to the engine flickered then I lost all forward gears all at once.
I'm auto transmission stupid but that one comment has bothered me and might have some significance, probably not.
,,,My point exactly.
I left the other post because it was more or less ads for trans builders. If we all can't put our heads together and come up with a solution then what is this site for.
Nobody has answered the previous about my coolant guage. I believe it is connected to the pcm. That's when it failed.
So ok I'm going to change it up a bit.
What is the difference in 97 and 99 powerstroke operating systems.
How hard would it be to swap to a 4R100. It seems to me to be the same motor. Maybe not.
Maybe a 6 speed swap. A 5 speed doesn't have enough towing capacity.
I got to get another tranny anyways so why not right?
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
My point exactly.
I left the other post because it was more or less ads for trans builders. If we all can't put our heads together and come up with a solution then what is this site for.
Nobody has answered the previous about my coolant guage. I believe it is connected to the pcm. That's when it failed.
So ok I'm going to change it up a bit.
What is the difference in 97 and 99 powerstroke operating systems.
How hard would it be to swap to a 4R100. It seems to me to be the same motor. Maybe not.
Maybe a 6 speed swap. A 5 speed doesn't have enough towing capacity.
I got to get another tranny anyways so why not right?
I left the other post because it was more or less ads for trans builders. If we all can't put our heads together and come up with a solution then what is this site for.
Nobody has answered the previous about my coolant guage. I believe it is connected to the pcm. That's when it failed.
So ok I'm going to change it up a bit.
What is the difference in 97 and 99 powerstroke operating systems.
How hard would it be to swap to a 4R100. It seems to me to be the same motor. Maybe not.
Maybe a 6 speed swap. A 5 speed doesn't have enough towing capacity.
I got to get another tranny anyways so why not right?
if you go ZF6 you will have some issues i'm thinking, but it can and has been done. the ZF5 would be easier obviously since it's from the same era truck. that is if u don't want to fix the auto. i'm not sure whats wrong with the auto, but i'm sure Bill and Tim of all people can point u in the right direction to find the issue.
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
My point exactly.
I left the other post because it was more or less ads for trans builders. If we all can't put our heads together and come up with a solution then what is this site for.
Nobody has answered the previous about my coolant guage. I believe it is connected to the pcm. That's when it failed.
So ok I'm going to change it up a bit.
What is the difference in 97 and 99 powerstroke operating systems.
How hard would it be to swap to a 4R100. It seems to me to be the same motor. Maybe not.
Maybe a 6 speed swap. A 5 speed doesn't have enough towing capacity.
I got to get another tranny anyways so why not right?
I left the other post because it was more or less ads for trans builders. If we all can't put our heads together and come up with a solution then what is this site for.
Nobody has answered the previous about my coolant guage. I believe it is connected to the pcm. That's when it failed.
So ok I'm going to change it up a bit.
What is the difference in 97 and 99 powerstroke operating systems.
How hard would it be to swap to a 4R100. It seems to me to be the same motor. Maybe not.
Maybe a 6 speed swap. A 5 speed doesn't have enough towing capacity.
I got to get another tranny anyways so why not right?
The 4R100 is pretty much the same transmission as the E4OD. The 4R has a few more sensors but that is about it. Not much to be gained going that route. The ZF5 would be the easiest swap but by the time you do that you could have had your E4 built by a proven builder and get the eletrical issues worked out.