E4OD problem
Thread Starter
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Senior User
Joined: Oct 2004
Posts: 114
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From: Fosen, Norway
E4OD problem
We got this gearbox rebuilt 2 months ago, been working fine until now.
Just go an intermittent problem, when in drive, starts out good in first gear, then it jumps hard into second, then he starts to gear up and down in first and second gear.
By using the shifter, it will stay in first when selecting first and it will stay in second when selecting second gear.
Tach and speedometer seems to act normal.
We also been cleaning the electric connections on the gearbox.
Any suggestins?
Just go an intermittent problem, when in drive, starts out good in first gear, then it jumps hard into second, then he starts to gear up and down in first and second gear.
By using the shifter, it will stay in first when selecting first and it will stay in second when selecting second gear.
Tach and speedometer seems to act normal.
We also been cleaning the electric connections on the gearbox.
Any suggestins?
Fleet Mechanic
Joined: Sep 2005
Posts: 1,509
Likes: 3
From: Ladner, British Columbia
Originally Posted by snubber
We got this gearbox rebuilt 2 months ago, been working fine until now.
Just go an intermittent problem, when in drive, starts out good in first gear, then it jumps hard into second, then he starts to gear up and down in first and second gear.
By using the shifter, it will stay in first when selecting first and it will stay in second when selecting second gear.
Tach and speedometer seems to act normal.
We also been cleaning the electric connections on the gearbox.
Any suggestins?
Just go an intermittent problem, when in drive, starts out good in first gear, then it jumps hard into second, then he starts to gear up and down in first and second gear.
By using the shifter, it will stay in first when selecting first and it will stay in second when selecting second gear.
Tach and speedometer seems to act normal.
We also been cleaning the electric connections on the gearbox.
Any suggestins?
Try a code scan to see if you get any codes first. Most likely code you might get is a Throttle Position Sensor Error.
Check your Throttle Position Sensor to make sure it does not have any dead spots in its range using a good ohm meter, or replace it right away, not very expensive. A dead spot could cause the kind of erratic shifting you are seeing as the transmission computer does not get the proper throttle position signal for shifting.
Sebastian.
Fleet Mechanic
Joined: Sep 2005
Posts: 1,509
Likes: 3
From: Ladner, British Columbia
Originally Posted by snubber
We dont have a tool to read codes, but we will check out the TP sensor tonight. Thanks
With the ignition on and engine not running slowly move the throttle from closed to wide open. You should start at at about 1.1 Volt and go to about 4.0 Volt give or take 0.1 Volt. The most important thing you are looking for is any flat spots where the voltage suddenly drops or jumps. If that is the case the TP sensor needs replacing. If you get a smooth voltage increase from 1.1V to 4.0V then you are ok, just remember to move the throttle slowly and watch your voltmeter.
Seb...
Posting Guru
Joined: Oct 2005
Posts: 1,030
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From: Powell River B.C.
Take it back to the shop that did the rebuild, and have them retorque the valve body attach bolts, check fluid level etc. should be warrranty work!!! As mentioned the adjustment of the FIPL is the most common fault, but also have the Manual postion lever indicator checked.
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Originally Posted by snubber
We got this gearbox rebuilt 2 months ago, been working fine until now.
Just go an intermittent problem, when in drive, starts out good in first gear, then it jumps hard into second, then he starts to gear up and down in first and second gear.
By using the shifter, it will stay in first when selecting first and it will stay in second when selecting second gear.
Tach and speedometer seems to act normal.
We also been cleaning the electric connections on the gearbox.
Any suggestins?
Just go an intermittent problem, when in drive, starts out good in first gear, then it jumps hard into second, then he starts to gear up and down in first and second gear.
By using the shifter, it will stay in first when selecting first and it will stay in second when selecting second gear.
Tach and speedometer seems to act normal.
We also been cleaning the electric connections on the gearbox.
Any suggestins?
Thread Starter
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Senior User
Joined: Oct 2004
Posts: 114
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From: Fosen, Norway
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New User
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I have a 91. I am working through a few problems myself. I would recomend checking the driven gear on the end of the speed sensor wich is on the end of the speedo cable. If that looks good check the driven gear in the tail of the tranny with a mirror. (I replaced both the drive gear was bad)
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Lead Driver
Joined: Nov 2003
Posts: 6,900
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From: Campbell River, B.C.
Originally Posted by okiediesel
This is my first time on here. Can someone tell me how to start a new thread?
At the top of the list of threads you will find a button titled "new topic", click that and your good to go.
Thread Starter
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Senior User
Joined: Oct 2004
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From: Fosen, Norway
Thanks all, we had to bad weather last night to get anything checked out, will try tonight.
We will check the TP sensor first, how can we detect if the VSS is damaged, ohm it?
Then check the gears on the speedo cable.
How do we check the Manual postion lever indicator? and where is it located?
The shop who did the rebuild is 10hrs away, will try out everything we can before we go to that step.
We will keep you updated.
Thanks
We will check the TP sensor first, how can we detect if the VSS is damaged, ohm it?
Then check the gears on the speedo cable.
How do we check the Manual postion lever indicator? and where is it located?
The shop who did the rebuild is 10hrs away, will try out everything we can before we go to that step.
We will keep you updated.
Thanks
Thread Starter
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Senior User
Joined: Oct 2004
Posts: 114
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From: Fosen, Norway
We checked the TD sensor, readings between 1,07 to 4,19 volts. We ohmed the sensor in the rear diff. reading was 1,35 kohm.
We took out the gear/sensor for the speedocable, we ohmed the sensor and we got 0,2 kohm. We put a battery drill on the end of the gear and we was turning while we was measuring the sensor, we got funny readings, they was fluxing between 0,2 to 6 or 8 kohm. We did several tests whit it between 0 to 400 rpm, and we never got a steady reading, always fluxing up and down. Maybe it is worth changing?
We also had a little test drive with the truck, and the problem is there all the time now, it will gear up, but it needs a lot of rpms. And it will gear up and down just hard.
It was mentioned the Manual Postion lever indicator, how do we check that one, and where is it located?
Thanks
We took out the gear/sensor for the speedocable, we ohmed the sensor and we got 0,2 kohm. We put a battery drill on the end of the gear and we was turning while we was measuring the sensor, we got funny readings, they was fluxing between 0,2 to 6 or 8 kohm. We did several tests whit it between 0 to 400 rpm, and we never got a steady reading, always fluxing up and down. Maybe it is worth changing?
We also had a little test drive with the truck, and the problem is there all the time now, it will gear up, but it needs a lot of rpms. And it will gear up and down just hard.
It was mentioned the Manual Postion lever indicator, how do we check that one, and where is it located?
Thanks
New User
Joined: Jan 2008
Posts: 7
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I thoght my speedo was working right before I replaced the gears. It was doing the same crazy up down shifting. Then I had my wife pase me in her car and found it was anywhere from 5-10 off. The drive gear in the tail had the teeth worn down quite a bit. So because the VSS runs off the speedo drive and it wasn't turning at the right speed the sensor was sending a improper signal for shifting speed. It would be worth getting a mirror and checking it out. The gears cost about $8 for both from the dealer as opossed to about $60 for the VSS. Wich I changed before I figured out that the gear was worn out. P.S. The gear on the end of the speed sensor looked fine it was just the one inside the tail of the tranny.
Last edited by okiediesel; Jan 25, 2008 at 03:48 PM.