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95DAK318
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1/31/2006
07:31:13

Subject: NO OD in 95
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I was checking out my truck after cleaning the TB and I don't think OD is kicking in. I counted the shifts. I only counted 2 shifts. Just to make sure I didn't miss one, at about 50mph I pushed the OD OFF button figuring it would shift down if it had been in OD and it did nothing. What do I look into first?



Bob Lincoln
Dodge Dakota
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1/31/2006
08:18:00

RE: NO OD in 95
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Several things to check.

O/D will not engage until coolant or tranny fluid is warm (depending on year of truck). So you may have to drive a few miles in winter for it to work.

Other possible causes are: bad SBEC, bad wiring connections to SBEC or to O/D solenoid, stuck or failed solenoid, solenoid pack screws are coming loose from valve body, fluid temp is too hot to allow O/D to engage. In my case, the solenoid pack has 3 torx screws that had loosened, causing fluid to leak around the solenoid at the valve body.



95DAK318
Dodge Dakota
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1/31/2006
12:47:43

RE: NO OD in 95
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I am leaking tranny fluid. It looks like it is coming from where it bolts to the motor, but I keep it filled.

Are these solenoids on the transmission body?

Is this something my Hanes manual will tell me how to check? I am at work so I can't look right now.



Bob Lincoln
Dodge Dakota
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2/01/2006
08:39:30

RE: NO OD in 95
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The solenoids are screwed to the right side of the valve body, which is inside the tranny; requires dropping the pan and draining. Haynes will be of little help.

When you cleaned the throttle body, any chance you moved or disconnected the throttle valve cable on the passenger side of it? Adjusting it will change shift points.



95DAK318
Dodge Dakota
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2/02/2006
07:59:59

RE: NO OD in 95
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I did not disconnect the linkage, if I did would it shift at all?

I sprayed carb cleaner in the tb.

I adjusted the TPS

I pulled the sensor at the back of the TB and cleaned it with carb cleaner.

Could any of these have caused me to lose Over drive?




Bob Lincoln
Dodge Dakota
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2/02/2006
08:13:52

RE: NO OD in 95
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Ah, now the details come out. How did you 'adjust' your TPS? What are the idle and WOT voltages? This could affect your shift points.

The 'sensor' at the back is not a sensor. It's the AIS motor. It affects your idle speed and mixture and your deceleration mixture.



95DAK318
Dodge Dakota
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2/02/2006
15:04:20

RE: NO OD in 95
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I just realized that i put that info in the other thread I started and didn't transfer it when I started new.

To adjust the TPS I loosened it, and with a meter attached to the middle lead and ground I rotated it until it was at .75v. It prviously was at .74v from the last time I did it when I did the "TPS MOD". I do not know the WOT voltage right now. What should it be. I assume I can do this with the motor off and just move the linkage? It still shifts ok, just never into OD?

What about the AIS, I read in another thread to clean the carbon off of it. What did I do to it?

Any suggestions?



95DAK318
Dodge Dakota
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2/02/2006
15:05:50

RE: NO OD in 95
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http://www.dodgedakota.net/boards/gen/23441.html

This was the last thread before the current problem. The OD thing happened after I tried to correct the problem in that thread.



95DAK318
Dodge Dakota
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2/02/2006
19:08:08

RE: NO OD in 95
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ok, sprayed out the AIS. I even moved the plunger in and out carefully to make sure I got every where.

Still no OD

Then I checked the TPS voltage after a trip down the road, and it was at 3v until I loosened it. Then it dropped back to .55v. Then it hit me. When I drilled the bushings out for "the mod", that put plastic on metal. It must have either melted a little or justgot worn and it was sticking. So I shimmed it out with some very thin washers (which the thread I read didn't mention doing). So down the road I go shift to second....shift to third.............Bam OD!

Suddenly I had 4 gears, the radio worked again, the Cruise control came on, I suddenly had a power sun roof, neon lights, a disco ball and in the rearview mirror flashing lights....oh shoot it's a cop, I took the wrong truck.

Ok just kidding, and no the cruise didn't work, but I have 4 gears, and a crappy idle, but I suspect that will be ok as soon as the computer learns again. I could reset it again but I'm tired of re setting my radio.

Thanks guys!



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