E4OD No Overdrive
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Joined: Feb 2011
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E4OD No Overdrive
I have a Winnibago on a F550 Chassis 1990, I took it to the gas station today and the overdrive didn't work.
The last time I drove it, it worked fine.
I push the button and the light goes on and off but nothing happens; otherwise the rest of the transmission works fine.
Any ideas? I want to go on a 600 mile trip in two days but not without overdrive.
I'm hoping, some simple solinoid or something.
The last time I drove it, it worked fine.
I push the button and the light goes on and off but nothing happens; otherwise the rest of the transmission works fine.
Any ideas? I want to go on a 600 mile trip in two days but not without overdrive.
I'm hoping, some simple solinoid or something.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Hard to say but here is what the Shop Manual says:
No 3-4 upshift.
Possible Source(s):
Shift solenoid operation.
-- (S1 or S2 solenoid suspected).
Action(s) to Take:
Refer to «electrical diagnosis» procedure in this section. Service as required.
Possible Source(s):
Valve body bolts not tightened to specification.
Action(s) to Take:
Retighten bolts to the «specification» listed at the back of this section.
Possible Source(s):
3-4 shift valve and spring.
-- Valve stuck, nicked or damaged.
-- Spring missing or tangled.
Action(s) to Take:
Determine source of contamination or damage. Service as required.
Possible Source(s):
Overdrive accumulator regulator valve and spring.
-- Valve stuck, nicked or damaged.
-- Spring missing or tangled.
Action(s) to Take:
Determine source of contamination or damage. Service as required.
Possible Source(s):
Overdrive clutch assembly.
-- Clutch plates burnt or worn.
-- Overdrive clutch cylinder damaged/feedbolt loose or missing/sealant leaking/seals damaged/misassembled/missing.
-- Cylinder ball check stuck or missing.
Action(s) to Take:
Service as required.
No 3-4 upshift.
Possible Source(s):
Shift solenoid operation.
-- (S1 or S2 solenoid suspected).
Action(s) to Take:
Refer to «electrical diagnosis» procedure in this section. Service as required.
Possible Source(s):
Valve body bolts not tightened to specification.
Action(s) to Take:
Retighten bolts to the «specification» listed at the back of this section.
Possible Source(s):
3-4 shift valve and spring.
-- Valve stuck, nicked or damaged.
-- Spring missing or tangled.
Action(s) to Take:
Determine source of contamination or damage. Service as required.
Possible Source(s):
Overdrive accumulator regulator valve and spring.
-- Valve stuck, nicked or damaged.
-- Spring missing or tangled.
Action(s) to Take:
Determine source of contamination or damage. Service as required.
Possible Source(s):
Overdrive clutch assembly.
-- Clutch plates burnt or worn.
-- Overdrive clutch cylinder damaged/feedbolt loose or missing/sealant leaking/seals damaged/misassembled/missing.
-- Cylinder ball check stuck or missing.
Action(s) to Take:
Service as required.
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