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Author Topic: AOD no shift (only runs first)  (Read 1452 times)
Fedrick33
4 Banger
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Posts: 30

Location: Sonoma county, Ca

« on: May 01, 2015, 10:53:36 am »

Hey guys,
So I swapped a 302/aod into my Chevy luv.  Drove it for a few test runs and everything was good. Anyway, my tv pressure was a little high, 11psi at idle. So I adjusted  it to 0... Now, the first time ive started/drove it since the adjustment, it only runs 1st and reverse, it won't shift out of first gear?? Is this typical if the tv pressure is "too low"
I'm assuming so since it ran fine until I adjusted it
Thanks

Ps, I'd just adjust back and check but it's at a muffler shop now getting an exhaust dabbed so I can't tonight it till tonight
Just want so knowledge on the AOD really
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Nate_135
Stroked Small Block
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Posts: 250

Location: Williston, ND

« Reply #1 on: May 01, 2015, 01:25:26 pm »

I adjust it to 3-5 psi at idle. Try that , see what happens. Otherwise it sounds like the governor may be stuck.
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97 ranger, 2wd, Stock 302 shortblock, 10:1, Vic JR, TW170, QFT 650, 1 3/4 x 3 L/T's, header evac, homebrew AOD/4R70W, Precision converter, 325/40/17 DR's, Cal-tracs. 3450#.
CDW6212R
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Location: Knoxville, TN.

« Reply #2 on: May 03, 2015, 09:15:34 am »

Don't drive an AOD with the TV pressure low, or the cable off etc. That will kill it fast.

The pressure spec is about 33psi with the throttle open with a special spacer, which I recall is the same thickness as an "X" drill bit.

The easiest way to adjust it without the tools is, if the cable is connected properly(brass grommet) and not too low, feel the shifting and slowly alter the TV adjustment.

Meaning only if the trans is not slipping or shifting up way too soon, then you work with it by feel alone. Effectively shortening the cable raises the TV pressure, and will not hurt the trans. Raise the pressure and the shifting gets firmer, and higher. Change the cable length by about 1/8" at a time.

It stretches with age, so you can generally move it about a 1/4" right off the bat with an older car. Raise the shift levels until it's too harsh for you, and then adjust it back slightly until you like it best.
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Don

1991 Mark VII LSC Special Edition, soon to be OBDII and 4R70W, then GTC body kit and 347.
1998 Mountaineer, plans for A4WD and KB 2200 blower later, XP8 parts, paint and a 332.
1973 Ranchero and 72 Sport front end ...will be a 351 Clevor, EFI and 4R70W.
Nate_135
Stroked Small Block
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Location: Williston, ND

« Reply #3 on: May 05, 2015, 09:19:32 am »

OR, just set it to 3-5 psi at idle and be done with it. This is the way I've done my AOD for 2 years and I have never had tv related issues. It is also the way recommended to me from multiple people that build AOD's for a living.
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97 ranger, 2wd, Stock 302 shortblock, 10:1, Vic JR, TW170, QFT 650, 1 3/4 x 3 L/T's, header evac, homebrew AOD/4R70W, Precision converter, 325/40/17 DR's, Cal-tracs. 3450#.
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