Transmission engagement
#1
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Joined: Apr 2004
Posts: 4,879
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From: Three Oaks, Michigan
Transmission engagement
I'm not too sure how popular this is, but I have seen it personally and recently here on BC. Where cars won't engage into gear without revving the engine excessively. I understand this is beacuse there is a lack of pressure to engage into gear, but what really fails? Is it the main pump? If that were it, wouldn't it just cease engagement all together? If there is sufficient fluid, and everything is all good and well in the transmission... can the modulator'* spring completely fail causing fluid pressure loss, thus causing the car not to engage except at high RPM when the modulator system cannot bypass all the extra fluid and the extra pressure that cannot be bypassed is enough to engage the transmission? It seems to make sense in my mind, but i'm just curious. Obviously this is not just a one time issue, so maybe a major transmission swap or rebuild job could be avoided by a $20 modulator.
#3
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Senior Member
True Car Nut
Joined: Apr 2004
Posts: 4,879
Likes: 3
From: Three Oaks, Michigan
Yeah I am talking about the THM-440, however I believe this can apply to any hydraulic transmission?
The thing that makes me stray from there, is that it still engages? If those were sticking.. wouldn't it just take one time to un stick them, then all would be well? I don't know, I'm just kinda typing and thinking at the same time.
The thing that makes me stray from there, is that it still engages? If those were sticking.. wouldn't it just take one time to un stick them, then all would be well? I don't know, I'm just kinda typing and thinking at the same time.
#4
trans
could be a cable linkage adjustment problem. There is a procedure for putting it in neutral and setting it.
Theres a 93 Bonne in my neighbors driveway with the same problem.
Won't go into gear. Meant to get over there and try the adjustment. Or at least try putting the shifter slowly between gears and see if it engages.
Theres a 93 Bonne in my neighbors driveway with the same problem.
Won't go into gear. Meant to get over there and try the adjustment. Or at least try putting the shifter slowly between gears and see if it engages.
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