E4od?
Thread Starter
|
Freshman User
Joined: Dec 2000
Posts: 29
Likes: 0
E4od?
I posted here a couple of weeks ago...I got one reply from Deiselzen(?). He wasn't sure that I knew if I had the E4OD. It definetly is an E4OD... Anyway, my transmission started what I think, feels like something that is supposed to hold pressure is not. There seems to be something cycling in and out of position after the tranny gets hot. I noticed this while towing my boat. Since then, I have not towed, but the condition cotinues intermitently. I changed my fluid and filter tonight, but didn't get a chance to go for a long drive. I aqm planning on going fishing this weekend so that'll be a good test. I didn't see any kind of band adjustment studs...I'm assuming there aren't any. I was wondering if it would be worth going through the valve body or having a look at the soleniods?? Any comments?
Senior User
Joined: Feb 2003
Posts: 315
Likes: 1
From: Alabama Gulf Coast
E4od?
Hi Chris,
Sorry about not getting back to you. I got busy on stuff around the house and completely forgot about your problem. As you're sure you have an E4OD, and you have a code reader, and you seem determined to check out all the easy stuff before taking it to a professional, here is what I'd do if I were in your position:
1. I'd check the codes to see if any have been recorded by the PCM. I will type out the instructions but as I have a completely different vehicle than you, you'll have to give me parameters about your truck so I can find the right section.
2. Regardless of pcm codes / no pcm codes, I'd check all of the sensors which apply to your vehicle for accuracy regarding the voltage signal they're sending. Did I send you the E4OD zip file? If not, give your email address and I will send it to you. It will include test procedures for sensors.
I guess that's about it. Let's get this ball rolling. R.A.
Sorry about not getting back to you. I got busy on stuff around the house and completely forgot about your problem. As you're sure you have an E4OD, and you have a code reader, and you seem determined to check out all the easy stuff before taking it to a professional, here is what I'd do if I were in your position:
1. I'd check the codes to see if any have been recorded by the PCM. I will type out the instructions but as I have a completely different vehicle than you, you'll have to give me parameters about your truck so I can find the right section.
2. Regardless of pcm codes / no pcm codes, I'd check all of the sensors which apply to your vehicle for accuracy regarding the voltage signal they're sending. Did I send you the E4OD zip file? If not, give your email address and I will send it to you. It will include test procedures for sensors.
I guess that's about it. Let's get this ball rolling. R.A.
Thread Starter
|
Freshman User
Joined: Dec 2000
Posts: 29
Likes: 0
E4od?
No I did not check the code. I am not sure how I would do this. You did not send the zip file, please send it to me. My email address is cma(No Email Addresses In Posts!). Thanks for your response.
Postmaster
Joined: Mar 2001
Posts: 4,968
Likes: 3
From: So Cal
E4od?
Does it feel like a gentle change in speed while driving? It sounds like it is cycling on and off.
One easy and cheap thing to check... Turn off your air conditioner. Does the problem go away? Many of us have been fooled into thinking we had a stumble, surge, slippage whatever, because the AC will cause a distinct "bump" as the clutch turns off and on. Easy to check and doesn't need fixing. AC "bumping" is normal.
Alternatively, does this only happen when towing? Maybe your truck is hunting gears or the torque converter is locking and unlocking because you are on the edge of the powerband while towing. It can be a very gentle to moderate bump. I think a tranny shop can reprogram the computer or adjust things to prevent hunting or TC unlocking with a load.
Good Luck,
Jim Henderson
One easy and cheap thing to check... Turn off your air conditioner. Does the problem go away? Many of us have been fooled into thinking we had a stumble, surge, slippage whatever, because the AC will cause a distinct "bump" as the clutch turns off and on. Easy to check and doesn't need fixing. AC "bumping" is normal.
Alternatively, does this only happen when towing? Maybe your truck is hunting gears or the torque converter is locking and unlocking because you are on the edge of the powerband while towing. It can be a very gentle to moderate bump. I think a tranny shop can reprogram the computer or adjust things to prevent hunting or TC unlocking with a load.
Good Luck,
Jim Henderson
