Should I be worried about 3.7 shifting points? - Ford Transit USA Forum
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post #1 of 13 (permalink) Old 07-08-2019, 02:23:AM Thread Starter
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Should I be worried about 3.7 shifting points?

I've been noticing that if I'm doing anything under highway speeds, the transit tends to dive into the highest gear possible. The problem is that it stays at 1100rpm until I stop cruising and give it gas.

Correct me if I'm wrong but isn't 1100rpm too low and lugs the engine? My temporary fix is just pressing "-" on the shifter and leaving it in M4 or M5 until I'm above 65km/hr. That way I'm cruising at 1800rpm which I believe is healthier for the engine.
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post #2 of 13 (permalink) Old 07-08-2019, 08:49:AM
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By highway speeds, you mean 100km/h correct? Then it should be about 1.8k to 2k rpm.
If you are doing 65 km/h then I think 1,100 rpm is about right?
Don't remember what mine does at that speed.
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post #3 of 13 (permalink) Old 07-08-2019, 09:18:PM Thread Starter
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Yup, 90km/hr is about 1800rpm or something. By keeping it in 5th gear I can do the same at 60km/hr. The police are very particular on how fast everyone is going around here so sometimes I'm cruising at 50km/hr and it just likes to be at 1100
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post #4 of 13 (permalink) Old 07-10-2019, 11:05:AM
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The Tow-Haul feature might correct this. Otherwise, manual shifting does as well. IMHO, the transmission is programmed poorly. Try to accelerate smoothly (almost gently) and it just bogs down. You press accelerator and press it a little more, then even more at which point it downshifts abruptly, too far perhaps (2 gears?, maybe 3), sending rpms to the 3k+ range. Same thing happens sometimes trying to pass someone on highway, which of course can be dangerous. Could just be my van (EB with 3.31). This year, I am trying to be more conscious of rpms and shifting manually more often to keep rpms a little higher....no doubt using more gas, but avoiding the “bog.”


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2015 HR mid-length, EB3.5, 3.31 started out as "blank canvas" but now with some ghetto / not-so-ghetto conversions. But certainly no Airstream or Outside Van.
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post #5 of 13 (permalink) Old 07-10-2019, 11:13:AM
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The few times I had to "punch it" to pass someone on a short straight stretch I was alarmed that it seemed to go from 5th/6th gear down to 2nd. Otherwise I haven't had a problem with the shift points.

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post #6 of 13 (permalink) Old 07-10-2019, 01:27:PM
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Originally Posted by surly Bill View Post
The few times I had to "punch it" to pass someone on a short straight stretch I was alarmed that it seemed to go from 5th/6th gear down to 2nd. Otherwise I haven't had a problem with the shift points.
At some point, when I can get my van into a competent dealer service department to check my dual batteries properly, I will have them check for any ecu program updates. Our transmission does not have it's own computer (tcm).
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post #7 of 13 (permalink) Old 07-10-2019, 01:49:PM
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You shouldn't be worried but you have every right to be irritated. I usually set the limiter to 4th gear when driving in hilly terrain below 50 mph and find the behavior for more agreeable. At least the limiter buttons are very nice ergonomically and can tame the tranny under most circumstances. Don't hesitate to use them. --Frank

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post #8 of 13 (permalink) Old 07-10-2019, 04:26:PM
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Originally Posted by jdybvik View Post
Our transmission does not have it's own computer (tcm).

No TCM? this guy says Ford replaced the TCM 4 times.


https://www.fordtransitusaforum.com/...since-new.html


In the past it has been said on this forum that you can reprogram the shift points of the TCM to match your current driving style (Or if you bought used.) by disconnecting the battery for 15 minutes.


The plug for the TCM is located behind and bellow the coolant reservoir, Rain water getting into this plug has damaged a few peoples transmissions in the past, this has been pointed out in separate threads as well as the wet air filter thread.


(Of course people may be confusing the PCM with the TCM.)

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Last edited by Michael Ophus; 07-10-2019 at 04:41:PM.
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post #9 of 13 (permalink) Old 07-10-2019, 04:58:PM
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Originally Posted by Michael Ophus View Post
Quote:
Originally Posted by jdybvik View Post
Our transmission does not have it's own computer (tcm).

No TCM? this guy says Ford replaced the TCM 4 times.


https://www.fordtransitusaforum.com/...since-new.html


In the past it has been said on this forum that you can reprogram the shift points of the TCM to match your current driving style (Or if you bought used.) by disconnecting the battery for 15 minutes.


The plug for the TCM is located behind and bellow the coolant reservoir, Rain water getting into this plug has damaged a few peoples transmissions in the past, this has been pointed out in separate threads as well as the wet air filter thread.


(Of course people may be confusing the PCM with the TCM.)
You are probably right. I just read that 2011ish the 6r80 transmission no longer had a tcm.
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post #10 of 13 (permalink) Old Yesterday, 09:22:AM
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Yeah the Transit is not Your Father's Oldsmobile.

My dad's '55 Olds was a heavy car, big V8, Rochester 4-barrel carb, 4-speed Hydramatic transmission, very well behaved. Floor it and you could hear the other 2 barrels of the carb open up and start sucking wind. Hydramatic dropped to third or second, and you ring up 80-mph in a hurry. Loved that transmission. It was bullet proof, knew its job, and did its job all by itself. No messing with the shift lever - just step on the throttle.

Which is why I've been reluctant to use the Transit shift select. The transmission is supposed to be smarter than me, and I'm not towing, so let it do it.

But on a recent trip to Nevada there were lots of long grades and hilly terrain, and the smart transmission would drop three or four gears at 70-mph, wind the engine up to 4500 rpm, start shifting back up, realize it was still on a hill, and do it all over again. So I started using manual select shift. Now I'm a believer.
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Last edited by call me Rob; Yesterday at 09:26:AM.
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