e4od wont shift into OD unless hard accel.
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Freshman User
Joined: Jul 2003
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e4od wont shift into OD unless hard accel.
I have a 1990 w/E4OD and the tranny shifts fine until it comes time for OD. It refuses to shift UNLESS (this the weird part) you are going uphill or under very hard acceleration. I really have to press the accel. to get it to shift and then it jumps back out of OD immediately. It might hold for a second or two. I changed the fluid and filter last night, still no luck. The truck was doing fine until the ignition switch had a problem. I had to replace the ignition actuator and when I got it back together, this problem and my RABS light comes on now. Thanks for any help given here.
Terry
Terry
Cargo Master
Joined: Oct 2003
Posts: 2,833
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From: Jefferson, Iowa
Sounds like a Throttle Position sensor. If your speedo is working fine, it is not your speed sensor. The E4OD judges load by the amount of throttle being reported by the TPS, and the speed you are traveling by the speed sensor in the rear diff. Sounds like a TPS sensor to me.
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Do the TPS's have a reputation of going out? Every one else seems to have just a shudder problem (which I do too) or the truck switches in/out of OD too easily. I couldn't find a thread that matched my problem. The truck sat for about 4 months before I fixed the ignition (it's a spare truck, I have 02 Supercrew as daily driver), however, I really love this ol truck and had it since it was new and would drive it a few days a week. Back to the subject, how much does a TPS cost, or would it pay to pull one off a junker? Thanks for the advice.
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Joined: Dec 2003
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Check wiring in steering wheel, might be a short.
I replaced my turn signal cam 3 days ago, and when crusing in overdrive if i signal right (doesn't do it in left) the transmission shifts out of overdrive. I will be checking for a short soon.
I replaced my turn signal cam 3 days ago, and when crusing in overdrive if i signal right (doesn't do it in left) the transmission shifts out of overdrive. I will be checking for a short soon.
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I was wondering if something in the column would cause this seeing as how the tranny worked before I started the ignition work. My turn signal was broken before I started this, the right signal wouldn't stay, I had to manually hold it. I didn't replace the signal pod while I was in there but there was two metal "shims" that came out of the trun signal pod while I was disassembling and I couldn't figure out how they went back in. Would these shims have anything to do with it? They are metal, but they fit against the plastic. Anyway, that sounds logical that something in there went wrong. The previous post said to check my TPS sensor. Does all this work together maybe? Has this caused a short in the TPS, evrything else seems to tie together on this truck, so...... I will check it out again and see. No problem taking the steering wheel off, I've learned that area well!
Thanks for the insight. Terry
Thanks for the insight. Terry
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Joined: Dec 2003
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Yes/No. In a early post I had different problem with a not so shifting trans, saved a bundle ($$$$$$$$). Anyway, RABs Light was a on and off thing every since the ring/pinion desinagrated 2 years ago. Replaced R/P 2 years ago, and RABs light has always been lite. Sensor in rear was busted up BIG TIME,replaced 2 weeks ago and light has not been on since.
BELIVE ME, the conveter does onlocks when I signal right, I will investigate this weekend. (Check for something amiss in steering wheel)
BELIVE ME, the conveter does onlocks when I signal right, I will investigate this weekend. (Check for something amiss in steering wheel)
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Thanks, will check my steering wiring again tonight. Will watch for a post update this weekend. Thanks, Terry
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Joined: Feb 2004
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From: central ca
Did you put in led brake lights? If so the computer doesn't read the brake switch correctly, and will release the tcc in OD at less than 1/2 throttle. just ask me $700bucks and three days at trans shops. for 2 bucks worth of lights.