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#1
08-29-2021, 04:09 AM
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84 300d no 4th gear
Greetings All
Back working on my 1984 300D, a project I started 5 years ago and then set aside for a couple of years. I did have rough shifts but some work on the vacuum system put that in order. Now when I start off in Drive, I get three very smooth shifts under 30MPH - which I thought would have me in 4th gear. But on the freeway at 55MPH I am showing 3100RPM. This would seem to indicate that I am in 3rd gear rather than 4th. I suspect it might be my shifter gear because it's a little loose so I will be replacing the 2 bushings below Any thoughts as to why I don't seem to be getting 4th - and what to do about it? All help appreciated. 
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#2
08-29-2021, 08:32 AM
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Have you tried moving shifter up to N when this happens? That may confirm your bushing idea, or if it actually goes into neutral, it might find 4th gear when you shift back down to D. My 85TD used to hang in 3rd gear in cold weather and I found that shifting up to N on the road and letting the engine drop to idle before moving the shifter back to D would help it.
After changing the fluid mine quit hanging in 3rd.
__________________
1985 300 TD 448K 1984 300 TD 278K 1983 240D euro 240k 1994 f-250 idi turbo 330K 1986 f-350 IDI 1987 F-350 IDI 1985 JD 1050 4wd 1965 IH 3660
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#3
08-29-2021, 12:02 PM
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Quote:
Clean off the back of the rear end center section (aka differential); on the lower left corner next to the cover the ratio is stamped into the main housing. What is it?
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#4
08-29-2021, 12:26 PM
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As Mentioned
If you feel three shifts it's in fourth gear .
Easy enough to test at 40 MPH , part throttle, shift from D into S ..... Once you properly adjust the operating pressure on a hot tranny, the vacuum adjustment is dead easy , just remove the plastic cover cap and drive it and stop to adjust until you like how & when it shifts .
__________________
-Nate 1982 240D 408,XXX miles Ignorance is the mother of suspicion and fear is the father I did then what I knew how to do ~ now that I know better I do better
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#6
08-30-2021, 10:25 AM
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when in drive, the car starts out in 2nd.
thats why people are saying 3 shifts is 4th, just to be clear.
__________________
 1977 240D auto w/OM616.916 engine 2005 Matrix 5spd 2006 Prius https://photos.app.goo.gl/AdP7i8xfCJeFuk5y9 glass pendant necklace http://glasspendantnecklace.com fused glass pendant http://fusedglasspendant.com
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#7
08-30-2021, 06:22 PM
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Quote:
 .... If the car is starting out in 2nd gear, how could there be 3 shifts? When does a normally operating automatic "start out in 2nd"? If he's starting in 2nd, and gets 3 more shifts, he's got a 5 speed. I must be missing something.....
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#8
08-30-2021, 06:41 PM
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haha, sorry, it starts out in 2, so think 2 - 3 - 4.
actually 2 shifts - unless you bury your foot and engage the downshift switch
__________________
1977 240D auto w/OM616.916 engine 2005 Matrix 5spd 2006 Prius https://photos.app.goo.gl/AdP7i8xfCJeFuk5y9 glass pendant necklace http://glasspendantnecklace.com fused glass pendant http://fusedglasspendant.com
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#9
08-30-2021, 09:52 PM
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Lol gale to know their is nothing wrong with my granny. I never knew these cars started in 2nd gear
Last edited by Lenovolost; 08-30-2021 at 10:07 PM.
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#10
08-31-2021, 10:47 AM
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1st Gear Start
It depends on you year the car was produced ~ mid 1981 they began starting off in first gear, prior to that the started in second .
They don't remain in first very long, maybe 20' .
__________________
-Nate 1982 240D 408,XXX miles Ignorance is the mother of suspicion and fear is the father I did then what I knew how to do ~ now that I know better I do better
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#11
08-31-2021, 12:39 PM
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What Frank said. Need to know which diff you have.
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