shifting problems with my turbo 350 3 speed - Pirate4x4.Com : 4x4 and Off-Road Forum

3/4 ton s-10 · 12-04-2006, 04:29 PM

my trany doesnt seem like its shifting in to 3rd gear it feels like it shifts twice but i only get 40 mph out of it and it winds out and doesnt shift, please help,
thanx, jason

3/4 ton s-10 · 12-05-2006, 12:53 PM

well i figured that it does shift 2 times, i guess its just really low geared whitch is kinda odd, it came out of a 78 chevy 3/4 ton 4x4 long bed, but i have all the running gear of that truck so the only diference is the body and 4.3L

bigyellowjimmy · 12-05-2006, 03:06 PM

check the vac switch (I forget the proper name) on the rear of the tranny. Make sure the hose has vac from the engine and test the switch to make sure it holds vacuum.

3/4 ton s-10 · 12-05-2006, 04:53 PM

the only thing I see is the vacume mogulater, is there any adjustments any where

bigyellowjimmy · 12-05-2006, 08:37 PM

Quote:

Originally Posted by 3/4 ton s-10

the only thing I see is the vacume mogulater, is there any adjustments any where

Is it getting vacuum?

Does it hold vacuum when you test it?

You can adjust most of them by turning a screw in the vacuum inlet.

3/4 ton s-10 · 12-08-2006, 08:24 AM

well I figured out the trany, it was in 4 wheel drive I guess,but the front drive line wasnt spining when the transfercase shifter was all the way forword, I found that 2 high is one position from all the way back and all the way back is eather 4 high or 4 low i dont know, but then why wasnt the front drive line moving if it was in some 4 wheel drive or what ever it is all the way forward.

3/4 ton s-10 · 12-08-2006, 08:26 AM

I think its a 208 or 205 transfer case all i know is that its huge.

4xFreak · 12-08-2006, 08:28 AM

It's probably a 203 if its out of the 78.

3/4 ton s-10 · 12-08-2006, 10:09 AM

what position is all the way forward, and if its 4 hi or lo then how come the driveshaft wasnt moving

12-04-2006, 04:29 PM	#1 (permalink)
3/4 ton s-10 Registered User Join Date: Sep 2006 Member # 79809 Posts: 38	shifting problems with my turbo 350 3 speed my trany doesnt seem like its shifting in to 3rd gear it feels like it shifts twice but i only get 40 mph out of it and it winds out and doesnt shift, please help, thanx, jason

12-05-2006, 03:06 PM	#3 (permalink)
bigyellowjimmy Registered User Join Date: Sep 2005 Member # 53682 Location: Chandler, AZ Posts: 712	check the vac switch (I forget the proper name) on the rear of the tranny. Make sure the hose has vac from the engine and test the switch to make sure it holds vacuum. __________________ Freedom is only part of the story and half the truth….That is why I recommend that the Statue of Liberty on the East Coast be supplanted by a Statue of Responsibility on the West Coast. Viktor E. Frankl

12-08-2006, 08:28 AM	#8 (permalink)
4xFreak Wheeler Join Date: Mar 2004 Member # 28661 Location: Kermit, TX Posts: 267	It's probably a 203 if its out of the 78. __________________ Zach Gentlemen, start your livers. 75 IH Scout II, future street queen 79 Chevy K10, backup wheeler 80 GMC K25, undecided 97 Chevy S10, the crawler 05 Dodge 3500, the tow rig

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12-05-2006, 12:53 PM	#2 (permalink)
3/4 ton s-10 Registered User Join Date: Sep 2006 Member # 79809 Posts: 38	well i figured that it does shift 2 times, i guess its just really low geared whitch is kinda odd, it came out of a 78 chevy 3/4 ton 4x4 long bed, but i have all the running gear of that truck so the only diference is the body and 4.3L

12-05-2006, 04:53 PM	#4 (permalink)
3/4 ton s-10 Registered User Join Date: Sep 2006 Member # 79809 Posts: 38	the only thing I see is the vacume mogulater, is there any adjustments any where

12-08-2006, 08:24 AM	#6 (permalink)
3/4 ton s-10 Registered User Join Date: Sep 2006 Member # 79809 Posts: 38	well I figured out the trany, it was in 4 wheel drive I guess,but the front drive line wasnt spining when the transfercase shifter was all the way forword, I found that 2 high is one position from all the way back and all the way back is eather 4 high or 4 low i dont know, but then why wasnt the front drive line moving if it was in some 4 wheel drive or what ever it is all the way forward.

12-08-2006, 08:26 AM	#7 (permalink)
3/4 ton s-10 Registered User Join Date: Sep 2006 Member # 79809 Posts: 38	I think its a 208 or 205 transfer case all i know is that its huge.

12-08-2006, 10:09 AM	#9 (permalink)
3/4 ton s-10 Registered User Join Date: Sep 2006 Member # 79809 Posts: 38	what position is all the way forward, and if its 4 hi or lo then how come the driveshaft wasnt moving