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05-19-2010, 10:17 AM
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#1 |
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Registered User
Join Date: Feb 2010
Location: altamont,ks
Posts: 53
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reverse and 1st but no 2nd and 3rd
76 2wd blazer with pontiac 350 and I think 350 tranny,has the notch in the pan corner. Is there any sort of vaccum line that might have came off that would make not shift into 2nd or 3rd? I've read plenty of posts that say reverse and 1st are the first ones that go out. Any info is appreciated
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05-19-2010, 10:28 AM
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#2 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
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Re: reverse and 1st but no 2nd and 3rd
time for a rebuilt transmission. its an internal failure and cannot be simply fixed
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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05-19-2010, 10:56 AM
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#3 |
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Overworked and Underlaid
Join Date: May 2002
Location: Flagstaff,Arizona
Posts: 1,279
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Re: reverse and 1st but no 2nd and 3rd
I would say you lost both of those forward gears and something internal failed so its rebuilt tranny time or rebuild the one you have.Your vacuum modulator line may have popped off the steel line from the engine but that should not caused the sudden loss of 2 forward gears when that happens usually the shifts between gears are delayed not lost completely.
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I'd rather push a Chevy than drive a Ford The Beast-1978 C10 LWB Red-1978 C10 LWB (Uncle Mike)Michael Henry Millett 11/5/1957 to 03/08/2012 Gone but will never be forgotten-RIP (Uncle Chuck)Charles Manning Gulbronsen Sr 1956-2012 Taken from us to soon but you will live on in our hearts-RIP |
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05-19-2010, 12:02 PM
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#4 |
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Registered User
Join Date: Feb 2010
Location: altamont,ks
Posts: 53
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Re: reverse and 1st but no 2nd and 3rd
Would any 350/400 tranny work or is it Pontiac specific?
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05-19-2010, 11:12 PM
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#5 |
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Registered User
Join Date: Aug 2009
Location: Lambertville MI
Posts: 962
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Re: reverse and 1st but no 2nd and 3rd
i believe the bolt pattern to the block it different from chevy to pontiac to buick.. etc
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"I'll keep my guns, money, and freedom. You can keep the "change" |
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05-19-2010, 11:51 PM
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#6 |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,072
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Re: reverse and 1st but no 2nd and 3rd
Try shifting through the gears manually first. From a stand still, drop it into 1st/low gear. As you accellerate @ normal speed, try shifting into 2nd when the rpm's sound like it's time to shift.
If it shifts into 2nd, repeat the process for 3rd/drive. If it goes through the gears, the vacuum line came off the modulator down @ the transmission. It's common; especially when the rubber line gets fluid soaked & swells.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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05-21-2010, 12:06 PM
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#7 |
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Registered User
Join Date: Dec 2007
Location: Houston, TX
Posts: 18
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Re: reverse and 1st but no 2nd and 3rd
Yeah the exact same thing happen to me. I just shifted throught the gears to make sure that the tranny was shifting. Then I looked in the LMC catalog to find the location of the modulator and discovered the vaccuum line had slipped off. I put it back on and have been rolling ever since.
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05-21-2010, 09:56 PM
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#8 | |
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Registered User
Join Date: Oct 2008
Location: Parsons, KS
Posts: 652
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Re: reverse and 1st but no 2nd and 3rd
Quote:
Buick, Oldsmobile & Pontiac share the same bellhousing bolt pattern and are commonly refered to as BOP transmissions. I believe Caddilac also used the same bolt pattern. Chevy has their own bolt pattern.
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74 GMC SWB Project "Sin-thia" Static Dropped 8"f/10"r http://67-72chevytrucks.com/vboard/s...d.php?t=460030  97 GMC reg cab short bed, 4.3V6 / 5spd, daily driver 220,000 miles, all stock for now |
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05-27-2010, 08:12 PM
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#9 | |
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Registered User
Join Date: Jan 2010
Location: Channelview,Tx
Posts: 46
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Re: reverse and 1st but no 2nd and 3rd
Quote:
gear stipped.Replaced with new and 15 mins later problem solved. |
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