70 Wagoneer Tranny Slippage - JeepForum.com
 
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post #1 of 11 Old 04-16-2013, 05:35 PM Thread Starter
Millhouse
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1970 FSJ Wagoneer 
 
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70 Wagoneer Tranny Slippage

Hey gang. So, now that the Waggy is running top notch, the tranny has started to slip. I have reverse, and when I put it in drive, it doesn't want to shift up. The fluid is at a good level and seems to look clean.

Any suggestions?

Thanks!

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post #2 of 11 Old 04-16-2013, 11:47 PM
Dr. Marneaus
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Rebuild it.

if you choose to DIY, a Turbo400 kit is like $250 plus maybe $50 in fluid and $90 for a torque converter.

http://www.summitracing.com/parts/sum-705021

If you choose to have it done by a shop, it'll be somewhere in the ballpark of $700-$900 most likely.

only other thing I can suggest is checking the governor, but that seems less likely.

-Andrew

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The Beast Build Thread: Marns '73 Wagoneer Thread ----- The Camper Build Thread: Marns 1980 Jayco JayFinch6 Build Thread

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post #3 of 11 Old 04-17-2013, 02:56 AM
RockRollin
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Check the vacuum modulator. Also the governor could be apple cored.

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
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post #4 of 11 Old 04-17-2013, 01:28 PM
Dr. Marneaus
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Quote:
Originally Posted by RockRollin View Post
Check the vacuum modulator. Also the governor could be apple cored.
even without the vacuum modulator disconnected the thing should still shift.

-Andrew

Illegitimi Non Carborundum


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post #5 of 11 Old 04-17-2013, 01:38 PM
RockRollin
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It doesn't downshift due to high vacuum conditions. Low vacuum can hold it in first.
I'm at 90% on the governer anyhow.

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"
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post #6 of 11 Old 04-21-2013, 07:19 AM Thread Starter
Millhouse
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RockRollin was correct. Thanks dude! The vacuum line from the intake to the modulator practically crumbled when I took it off. Must have been sucking air.

It works great and am sure glad I don't have to rebuild it. (yet)

Dr. Marneaus- You're an LA? Me too. Great profession.
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post #7 of 11 Old 04-21-2013, 08:01 AM
RockRollin
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I like a low dollar fix for what seems like a high dollar malfunction.

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"
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post #8 of 11 Old 04-21-2013, 12:02 PM
revelc
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Quote:
Originally Posted by RockRollin
I like a low dollar fix for what seems like a high dollar malfunction.
X2 Makes me want to fist pump for people when it happens.

Wag Rebuilt 360, 260H, 727, Locked 44, AMC 20, 208, 31" M/T's, 4" Rustys, 2.5" Duals. SOON:SOA SF, 496, T400, Doubler, D60's, 37" M/T's <-TOY
Cherokee Rebuilt 360, 2" Duals, mostly stock. SOON: Hot Street 401, 4'' Rustys, 33" BFG A/T's maybe a T-case to get rid of Q-Track <-TOW RIG
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post #9 of 11 Old 04-21-2013, 07:48 PM
ghcoe
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That is why I work on my own vehicles. They would have told you it was a bad transmission and charged you a rebuild even if they did find the simple problem.

George.

1977 Jeep Cherokee Chief, 1972 360cid., Turbo 400 , Quadra Trac with Low Range reduction, 3:31 Gears, 31x10.5-15 GT Radial Adventuro AT II. Factory Brush Guard/Spare Tire Carrier/Safari Kit/Tow Package.
http://www.jeepforum.com/forum/f57/1...chief-1749666/
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post #10 of 11 Old 04-24-2013, 08:13 PM
super98lsc
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Good call! caught this late had same issue in the Stingray when the damned line came off after a hard launch, I thought I smoked some more hard parts such a great feeling when you find out its not. My worse was an honest mid 10 sec 383 IROC-Z, I dragged a Viper at the Texas Motorplex and won... idling off the track I feel vibrations, missfiring, and worse a nasty death knock. Turned out I ripped the trans crossmember right out of the lousy F body paper thin "frame" and the trans was hanging by 3-4 threads of 1 of the 4 bolts. It knocked the HEI off when the engine tilted back to the firewall. We screwed it back in with 4 self tapping screws and drove it home. Later installing a huge plate on the interior under the carpet then bolting the trans through it to distribute the load. I thought I had just lost a 10k Rher-Morrison 383.

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post #11 of 11 Old 04-25-2013, 05:10 AM
revelc
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Quote:
Originally Posted by super98lsc
Good call! caught this late had same issue in the Stingray when the damned line came off after a hard launch, I thought I smoked some more hard parts such a great feeling when you find out its not. My worse was an honest mid 10 sec 383 IROC-Z, I dragged a Viper at the Texas Motorplex and won... idling off the track I feel vibrations, missfiring, and worse a nasty death knock. Turned out I ripped the trans crossmember right out of the lousy F body paper thin "frame" and the trans was hanging by 3-4 threads of 1 of the 4 bolts. It knocked the HEI off when the engine tilted back to the firewall. We screwed it back in with 4 self tapping screws and drove it home. Later installing a huge plate on the interior under the carpet then bolting the trans through it to distribute the load. I thought I had just lost a 10k Rher-Morrison 383.
I would have dropped to my knees and thanked God on that one

Wag Rebuilt 360, 260H, 727, Locked 44, AMC 20, 208, 31" M/T's, 4" Rustys, 2.5" Duals. SOON:SOA SF, 496, T400, Doubler, D60's, 37" M/T's <-TOY
Cherokee Rebuilt 360, 2" Duals, mostly stock. SOON: Hot Street 401, 4'' Rustys, 33" BFG A/T's maybe a T-case to get rid of Q-Track <-TOW RIG
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