No Overdrive.
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Junior User
Joined: Sep 2015
Posts: 59
Likes: 2
From: Southern Oregon
No Overdrive.
A few days ago while driving my '95 on the highway, I felt the truck bog down like it was running out of gas. I was doing about 70 MPH when it happened. I pulled over, checked everything and it seemed fine. When I attempted to get up to speed again, I noticed it wouldn't shift into overdrive. So I turned the overdrive off and continued the rest of my journey out of town.
I checked the trans fluid, it was clean, full and didn't smell burned. The trans was running at 150 deg before and after it happened according to my Auto Meter gauge.
The overdrive light on the shifter was not blinking before or after I lost overdrive.
The only code the PCM is throwing at me is "insufficient EGR flow".
Not sure if that could be related?
I cleared the code and still no overdrive.
At this point I'm lost at guessing what it could be? Solenoid pack?
I'm currently over 700 miles from home and besides the horrible gas mileage this is causing it's going to add hours to my drive home.
Hoping they're might be an easy fix for this.. (Easy meaning not having to take off more than the valve body if necnecessary).
To be clear it's a '95 Bronco with a 5.8 and E4OD with a MAF. Any suggestions would be appreciated.
I checked the trans fluid, it was clean, full and didn't smell burned. The trans was running at 150 deg before and after it happened according to my Auto Meter gauge.
The overdrive light on the shifter was not blinking before or after I lost overdrive.
The only code the PCM is throwing at me is "insufficient EGR flow".
Not sure if that could be related?
I cleared the code and still no overdrive.
At this point I'm lost at guessing what it could be? Solenoid pack?
I'm currently over 700 miles from home and besides the horrible gas mileage this is causing it's going to add hours to my drive home.
Hoping they're might be an easy fix for this.. (Easy meaning not having to take off more than the valve body if necnecessary).
To be clear it's a '95 Bronco with a 5.8 and E4OD with a MAF. Any suggestions would be appreciated.
Thread Starter
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Junior User
Joined: Sep 2015
Posts: 59
Likes: 2
From: Southern Oregon
The truck felt like it bogged down when I first lost overdrive. When leaving it in Drive, truck drives normal.
I'm beginning to think it has something to do with my MLPS sensor since my shifter feels sloppy..
I'm beginning to think it has something to do with my MLPS sensor since my shifter feels sloppy..
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,731
Likes: 2,658
From: SE Florida
The sloppy shifter feel is usually from loose bolts at the bottom of the steering column.There are two #30 Torx head bolts that hold the shift cable bracket to the column. They often loosen. If you crawl under the dash and look up the column you'll see them.
Thread Starter
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Junior User
Joined: Sep 2015
Posts: 59
Likes: 2
From: Southern Oregon
Yes I checked those. I guess "sloppy" wasn't the best word regarding the shifter, I meant inaccurate. There were times I would have to hold the shifter in Park to get the truck to start. I checked the MPLS earlier and it was a little off. Re-adjusted it and that problem is now gone however still won't stay in overdrive..
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Junior User
Joined: Sep 2015
Posts: 59
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From: Southern Oregon
It will attempt to shift into 4th but won't. It makes it feel like the engine wants to bog.
What's strange is that I was in overdrive (4th) for quite some time when the problem started..
What's strange is that I was in overdrive (4th) for quite some time when the problem started..
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From: Rhode Island
If you start to slowly back off the throttle, will it successfully complete the shift into OD?
It sounds like either your OD clutches are burnt, or maybe it starts to get into some kind of bind when it shifts into OD. I think the coast-clutch being stuck on might cause that, but I'm not sure how to check if the coast clutch is stuck on.
It sounds like either your OD clutches are burnt, or maybe it starts to get into some kind of bind when it shifts into OD. I think the coast-clutch being stuck on might cause that, but I'm not sure how to check if the coast clutch is stuck on.
Thread Starter
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Junior User
Joined: Sep 2015
Posts: 59
Likes: 2
From: Southern Oregon
If you start to slowly back off the throttle, will it successfully complete the shift into OD?
It sounds like either your OD clutches are burnt, or maybe it starts to get into some kind of bind when it shifts into OD. I think the coast-clutch being stuck on might cause that, but I'm not sure how to check if the coast clutch is stuck on.
It sounds like either your OD clutches are burnt, or maybe it starts to get into some kind of bind when it shifts into OD. I think the coast-clutch being stuck on might cause that, but I'm not sure how to check if the coast clutch is stuck on.
I'm hoping it's more along the lines of something binding like you mentioned.. Haven't gone the "magic fix in a bottle" route but I figure at this point it won't hurt if that's the case.
Thread Starter
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Junior User
Joined: Sep 2015
Posts: 59
Likes: 2
From: Southern Oregon
I'll try that tomorrow and report back. Thanks to all replies so far.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,731
Likes: 2,658
From: SE Florida
You are correct. If there is engine braking in this condition the coast clutch is stuck on.
Laughing Gas
Joined: Jan 2004
Posts: 960
Likes: 5
From: Spring Texas
Hey Mark, you appear to be the person I need to talk to. I have a 93 with a Ford with a E4OD and when I get to highway speeds the truck had a thrumbing noise. I thought it was the driveshaft but I checked it and it starts when I am in overdrive and giving it gas only. Or so I thought. Today I turned off the OD and just driving around town it does it when I give it gas in 3rd. The whole truck vibrates. I suspect a rebuild on the transmission but I could sure use some advice before I go that route. I am about to sell the truck and really do not want to drop more money into it. Thanks