E4OD coast clutch solenoid - code 626
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Lead Driver
Joined: Feb 2013
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From: Roseville, MN
E4OD coast clutch solenoid - code 626
Checking codes on my '97 F-250HD today (460, E4OD) and it has a KOEO code of 626 which I found to mean "coast clutch solenoid failure, E4OD".
Trying to look up what a coast clutch solenoid is / does I found that when it fails there will be no compression braking in gears 1, 2 and 3. I couldn't tell if I have compression braking in 3rd (wasn't going fast enough to notice if I did), but I definitely have it in 1st and 2nd.
Can anyone help me with what this code really means, and what is entailed in correcting it?
Thanks
Trying to look up what a coast clutch solenoid is / does I found that when it fails there will be no compression braking in gears 1, 2 and 3. I couldn't tell if I have compression braking in 3rd (wasn't going fast enough to notice if I did), but I definitely have it in 1st and 2nd.
Can anyone help me with what this code really means, and what is entailed in correcting it?
Thanks
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Lead Driver
Joined: Feb 2013
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From: Roseville, MN
Bumping this up.
Also I tried out the compression braking in 3rd at higher speeds. There's not much there anyway, but I can't really feel anything when I coast at 55 mph in neutral ad then shift into gear with overdrive locked out. I can imagine that I feel something when I do that without locking out OD, so I'm thinking it has more compression braking in 4th than it does in 3rd, indicating that something is wrong.
Also I tried out the compression braking in 3rd at higher speeds. There's not much there anyway, but I can't really feel anything when I coast at 55 mph in neutral ad then shift into gear with overdrive locked out. I can imagine that I feel something when I do that without locking out OD, so I'm thinking it has more compression braking in 4th than it does in 3rd, indicating that something is wrong.
Lead Driver
Joined: Jul 2007
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From: Rhode Island
Bumping this up.
Also I tried out the compression braking in 3rd at higher speeds. There's not much there anyway, but I can't really feel anything when I coast at 55 mph in neutral ad then shift into gear with overdrive locked out. I can imagine that I feel something when I do that without locking out OD, so I'm thinking it has more compression braking in 4th than it does in 3rd, indicating that something is wrong.
Also I tried out the compression braking in 3rd at higher speeds. There's not much there anyway, but I can't really feel anything when I coast at 55 mph in neutral ad then shift into gear with overdrive locked out. I can imagine that I feel something when I do that without locking out OD, so I'm thinking it has more compression braking in 4th than it does in 3rd, indicating that something is wrong.
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Lead Driver
Joined: Feb 2013
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From: Roseville, MN
Busy and cold week (5 deg at noon today) so I haven't crawled under the truck to look for any damaged wires yet. Hopefully on Saturday.
In the meantime, is there any problem with driving it without the coast solenoid? I am driving the truck regularly and I really can't tell anything is different in normal usage. It doesn't seem like I'm likely to cause any more damage continuing to use the truck, but is it really safe?
In the meantime, is there any problem with driving it without the coast solenoid? I am driving the truck regularly and I really can't tell anything is different in normal usage. It doesn't seem like I'm likely to cause any more damage continuing to use the truck, but is it really safe?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,657
From: SE Florida
If you don't turn the OD OFF the coast clutch solenoid will never be activated and there will be absolutely no difference in the way the trans operates. If you do turn off OD, you won't have engine braking. You won't hurt anything either way.
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
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Lead Driver
Joined: Feb 2013
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From: Roseville, MN
Thanks for that thread. I probably won't be doing any work on it now. It's way too cold here to be doing wiring. And I'm not really having any problems anyway, no flashing lights, no symptoms, just found the code. But at least now I know what to look for when it warms up!
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