e40d tranny problems
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Junior User
Joined: Jan 2010
Posts: 57
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From: Nap town
e40d tranny problems
i have a 93 ford f-250 naturally aspirited diesel. mechanic said the tranny comp is throwing a low pressure cod in gears 1 and 2. he said its internal problem but was still ok to drive. whats wierd is it only acts up when its really cold or when the truck gets wet. could that be something electrical????
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
What were the code numbers.........
Check the connector on the right side of the trans...........
Special note:
To remove the solenoid plug, remove the heat shield."Do not use pry bars or screw drivers in attempt to remove plug" without shield removed.
Remove solenoid body connector by pushing on the center tab and pulling the wire harness.
To replace push down on solenoid connector until audible click is heard, then replace heat shield.
Your looking for bent, corroded, wet or missing pins.........
Check the connector on the right side of the trans...........
Special note:
To remove the solenoid plug, remove the heat shield."Do not use pry bars or screw drivers in attempt to remove plug" without shield removed.
Remove solenoid body connector by pushing on the center tab and pulling the wire harness.
To replace push down on solenoid connector until audible click is heard, then replace heat shield.
Your looking for bent, corroded, wet or missing pins.........
Thread Starter
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Junior User
Joined: Jan 2010
Posts: 57
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From: Nap town
i think it was code 49. he hooked pressure gauges to it and gears 1 and 2 are not getting good pressure. he told me it was internal problem. but if it was the pump or something it would do it all the time, but it only does it when it rains or i wash it or when its below freezeing.
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Junior User
Joined: Jan 2010
Posts: 57
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From: Nap town
after i get up to about 35 mph the overdrive light comes on and it shifts hard into first second and overdrive.
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Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Well this is what my book had to say about the code 49
"1-2 shift Error: Engine speed drop during the 1 to 2 shift does not fall within tolerance limits."
Doesn't tell you anything you didn't already know.
How do your cluster gauges work? On your year of truck the tachometer as well as speedometer need to read accurate and steady to prevent the computer from storing error codes and activating limp mode.
You didn't say how 3rd gear works. Is it completely normal? not even a hint of slipping or hard shifting?
"1-2 shift Error: Engine speed drop during the 1 to 2 shift does not fall within tolerance limits."
Doesn't tell you anything you didn't already know.
How do your cluster gauges work? On your year of truck the tachometer as well as speedometer need to read accurate and steady to prevent the computer from storing error codes and activating limp mode.
You didn't say how 3rd gear works. Is it completely normal? not even a hint of slipping or hard shifting?
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Thread Starter
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Junior User
Joined: Jan 2010
Posts: 57
Likes: 0
From: Nap town
actually third gear shifts hard to then fourth is fine and it shifts hard into overdrive. the ford mechanic says my cluster or speed sensor is bad. but another mechanic says my front pump is bad so i dont know where to start.
Senior User
Joined: Jan 2010
Posts: 473
Likes: 1
From: dirty jerzy
my problem was something i would never even have checked, the relay connector ,was bad not the relay
if your tack is working, and the trans is shifting , but not correctly . the other devices that make it shift are
1.fipl. fuel position lever on the ip
2. the speed sensor on the rear differencial
both are at auto zone,advance ,pep boys cheep$$
thats were i would start
check the fuse
if your tack is working, and the trans is shifting , but not correctly . the other devices that make it shift are
1.fipl. fuel position lever on the ip
2. the speed sensor on the rear differencial
both are at auto zone,advance ,pep boys cheep$$
thats were i would start
check the fuse
Senior User
Joined: Sep 2007
Posts: 317
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From: Snohomish, WA
I would start changing out sensors before I dropped much money on a new trans.
Engine speed sensor - $65
Axel speed sensor (rear diff) - $50?
Throtle position sensor (FLPL) - $50
WAY cheaper than a new transmission. And if it is a new transmission you need, you will never notice the $170 you spent on the sensors
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Junior User
Joined: Jan 2010
Posts: 57
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From: Nap town
i have replaced the throttle position sensor, i replaced the range sensor, the mechanic told me the speed sensor in rear differential is good, the only sensor i havnt replaced is the engine speed sensor, is that like two wires in the middle of a nut on the driver side by the oil fill spout?