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02-26-2007, 07:17 PM
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#1
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Supporting Member
Join Date: Sep 2006
Posts: 1,779
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diamondlarry -
Quote:
Originally Posted by diamondlarry
I'm REALLY glad I have a manual. 
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My brain just ain't working right. I thought you meant manual as in Haynes or Chilton or something.
CarloSW2
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02-26-2007, 09:34 PM
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#2
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Registered Member
Join Date: Oct 2005
Posts: 1,978
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Speaking of Manual
I located the shop manual and noted that I can override the TC engagement through manually engaging 1 or both of the 2 TC lockup sensors via 5V power. Judging by the schematics, it may bypass the VSS and TPS to make the final decision to lock up through the switch override -- I'd just have to be mindful of speeds and coolant temps to prevent further damage to the trans. Of the 3 settings of full, partial, or zero lockup, one sensor allows partial, and the other engages full and uses the Hill/Fuzzy-Logic adaptive computer for shifting (argh). So, during the colder months, perhaps 2 toggles could manually engage these at lower TPS settings once the speed allows. Purely theory.
I'll tell ya, that 50-page section on the automatic transmission looks more complicated than open-heart surgery. Sheesh.
If you're stuck with an auto, I reccommend finding a shop manual that describes exactly what parameters the transmission requires. Further inspection could perhaps find a way to take control of that vicious dictator: the Transmission Control Module.
RH77
RH77
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02-28-2007, 01:02 AM
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#3
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Registered Member
Join Date: Feb 2007
Posts: 114
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Wow thanks for all the responces! I could swap in a Camero 6 speed transmission. I've had two 5 speed manual cars before. On both, I notice if I short shift, I can get better than the EPA highway milage, in the city. I have a 700r4 transmission in my caprice, I would have trade in the newer electrically controlled one and program differnt shift points.
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David
85 Chevrolet. 30 MPG or bust!
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02-26-2007, 07:06 PM
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#4
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Registered Member
Join Date: Dec 2006
Posts: 55
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With the 4T65E-HD (4-sp automatic) I can control shift point, TC lock-up, and other parameters with my tuner.
I am sure there are ways to adjust settings on most electronically controller automatics.
For the older automatics (example: 92-95 Civics) has anyone tried changing gears to lower the highway cruising RPMs?
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03-01-2007, 01:51 AM
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#5
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Registered Member
Join Date: Feb 2007
Posts: 114
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It would be cool driving a huge car with a manual short throw shifter. Like the one in Underworld.
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David
85 Chevrolet. 30 MPG or bust!
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03-02-2007, 07:09 AM
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#6
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Registered Member
Join Date: Feb 2007
Posts: 722
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synthetic tranny fluid?
How about synthetic transmission fluid?
I've seen some posts elsewhere saying that's definitely the way to go.
Any benefits to FE, or just that it lasts longer and probably protects the tranny better?
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.
Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
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03-02-2007, 07:14 AM
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#7
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Registered Member
Join Date: Dec 2005
Posts: 4,223
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From a FE perspective, the main benefit of synthetics is their cold performance (viscosity). They don't thicken as much as mineral fluids as temps drop.
People who live in a year-round warm climate would probably see no FE benefit from synthetic use.
Note that no major synthetic brand claims fuel economy improvements with their use.
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03-04-2007, 10:54 AM
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#8
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Registered Member
Join Date: Mar 2007
Posts: 758
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I've noticed that our F150 simply will not engage the lockup in topgear until it heats up which is typically a good five minutes or more down the road. During this time, economy drops from about 18 mpg to 16. I can only guess that the ATF viscosity is just too high to engage the lockup until warm and that extra 2 mpg is essentially diverted to heat it up. So the question is, will synthetic ATF improve the time lag until lockup is possible?
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03-05-2007, 01:50 AM
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#9
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Registered Member
Join Date: Feb 2007
Posts: 114
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When I did my engine swap i didn't reconnect the tranny oil line to the radiator. I can't because I lost the fitting
The tranny doesn't ever warm up and so for some reason it was holding it in low gears. OD doesnt enguage till 60 MPH...
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David
85 Chevrolet. 30 MPG or bust!
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03-23-2007, 04:54 AM
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#10
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Registered Member
Join Date: Feb 2007
Posts: 722
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What's short shifting?
A couple posts in this thread mentioned it.
__________________
Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.
Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
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