Jeep Stall Converter

Discussion in 'General Discussion' started by sgtstanko, May 27, 2008.

  1. sgtstanko

    sgtstanko Want to go FASTER!!!

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    Just to put the knowledge out there so no one else falls into this pit of listening to the wrong advise. The Jeep stock converter stalls at 2,100 rpm as stated by the factory. When you install ANY converter that slips or stalls at or beyond 3,200rpm, the ECU goes into limp mode or a 2nd gear upshift like "RIGHT NOW". Obviously this is a new problem and new territory not yet explored by the tuning community. This is not a new problem or experience, I just happen to be one of the "new" learners.:smart: ......A stall converter is worth while, but I would keep it at 2,500-2800 MAX!

    JEEPS......2,800 rpm stall or less or your pockets will be lighter!!!
     
    Last edited: May 27, 2008
  2. Blown-WK

    Blown-WK cherokeesrt8 survivor!

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    Uh oh...where's Patrick:ilovesrtc:
     
  3. Patrick G

    Patrick G New Member

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    I must have a factory freak or it must be related to having a Diablo tuner. Before my cam install, I could get 3000 rpm stall when I put the trans in autostick in second gear from a dead stop. After the cam install, the added dynamic compression allowed me to get 3200 rpm.

    When I'm logging my 1/4 mile runs, the rpm jumps to 3000ish immediately at the starting line. Maybe I'm lucky but I doubt it. I'm not the only one getting high 1.7s and low 1.8s in 60' times. For what it's worth, I've never had a limp mode problem...EVER.
     
  4. CentralTexHemi

    CentralTexHemi PUNISHER

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    Thank God for the blue pills huh Steve:bigwink:
     
  5. Cam

    Cam Management up n smoke

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    Sorry Steve, but I gotta disagree with you. Like we have discussed, it's a tune issue with the Diablo stuff. I had this problem the last time at the track. And prior to this, I never had a problem until I changed over to the diablo stuff. So unless you already changed your converter and can tell me that solved all your problems. I'm not convinced bud.
     
  6. sgtstanko

    sgtstanko Want to go FASTER!!!

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    Not So!!!

    Thats what I said above, the tune has not been worked out. In the mean time the ECU/TCM goes into limp mode. I had a lengthy conversation this morning with individuals at a performance oriented Mopar dealership. They have seen the same results when they installed different torque converters in the JEEP. The Jeep is no where the same system as the LX platform.

    BTW, I did not have this problem 3 weeks ago at Irwindale when I was cutting 1.67 - 60'ft with the "STOCK" converter!

    OH YEA.....I'll have that converter out in the next 48 hrs or less.
     
  7. sgtstanko

    sgtstanko Want to go FASTER!!!

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    If you have a "aftermarket" converter I would not upgrade anything related to the ECU/Diablo revision.....your lucky! If you have a "STOCK FACTORY" converter you have a freak, since they stall at 2,100 rpm.
     
  8. JMatt

    JMatt Platinum Supporting Member

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    Whoever said they stall at 2,100 was wrong.

    That may be what the manual says. That may be what they tell the public. That may be the "official" SRT engineer answer.

    But they are wrong.

    The stock Jeep converter stalls at about 2,500. Maybe 2,400. Maybe 2,600.
    But not 2100.

    Period.
     
  9. MatFab

    MatFab Full Access Member

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    exactly.. sgt your off on this one. Sorry about whatever dealership told you
     
  10. sgtstanko

    sgtstanko Want to go FASTER!!!

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    OK......maybe its off but the Jeep stall converter is rated at 2100rpm. I could brake torque it up to 2500rpm but it still doesnt change the stated design target of the converter and what the software is programmed to "see". Again the JEEP drive line is like comparing apple to coconuts to an LX platform.

    The whole point here is (excluding the LX) the JEEP at this point in time will go into limp mode and the Torque Management takes over when it "sees" stall that immediately jumps past 3,200-3,500 when the vehicle is barely under way. We can slice it anyway we want but it didnt do this with the stock converter and sure cant argue with 1.67-60's with the stock converter.

    I have run Nitrous with the stock converter making 500hp out of the hole.....the wheels spinning like mad.......torque steer like mad and it NEVER acted like this with the stock converter.

    I'm open to suggestions, but to date I have seen no response to this issue or know of very very few JEEPS(mine) with a 426 and a 3,200rpm stall converter that works.

    Irregardless, ProTorque is overnighting me a "tight" 2,800 and we will see.
     
    Last edited: May 27, 2008
  11. JMatt

    JMatt Platinum Supporting Member

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    We're both arguing the same point. They can say it's "rated" whatever they want.

    Fact is - it stalls to 2500, just like you said.

    I have no knowledge of the Jeep specific issues, and wouldn't pretend to. I just know the Jeep converter stalls to 2500 - and YES - I have the Jeep SRT-8 converter in my 300C SRT-8.
     
  12. BTLFED

    BTLFED Full Access Member

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    Steve, what kinda flash were you getting when you spray ? At the track, Im able to stall it to around 2500 before the wheels try and spin. When Spraying my convertor will flash to about 3000 rpm before it locks and climbs. This is only spraying 32% of a 150 shot at that given RPM. I have never gone into limp mode but have seen another Jeep do it with traction control left on.

    Good luck
     
  13. YoungMedic23

    YoungMedic23 Vortech 426 SRT8 Jeep Rollin

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    OK bring on the VIDEOS THEN!!!
     
  14. rainmaker

    rainmaker New Member

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    http://www.300cforums.com/forums/661498-post64.html

    I know no one believes the engineers anymore, but when I asked a couple weeks back they said ~2800.

    I can remember when TC's first came out for the Jeep (LX?) platform and guys were losing 60ft times saying that TC's didn't help, or caused to much wheel spin. I think it's because they were going to 2600 or low stalls and losing some TQ off the line...

    Just my opinion...
     
  15. sgtstanko

    sgtstanko Want to go FASTER!!!

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    I agree..I could brake stall it to about 2500.....should have left the stock converter in it!
     
  16. Aussiesrt

    Aussiesrt New Member

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    mmmm converter in jeep

    Hi all

    im new to this forum so i hope i can be helped and someday hope to help someone else,

    maybe i should have read this thread before i did my latest mod,, stall converter. i have just put in my SHR viking nag1 and i love it , what i dont like is the random limp modes after a launch then a few sceconds of coasting it will decide to shit itself , more than likely due to the protouque 3200..
    pre converter i ran , 11.6 at 116. 1.71 60foot.
    after converter i ran 12.0 at 113 with 1.81 60 foot ( right rear wheel FRYING) and shifting the truck sideways on the 1-2 shift. tyres 245 45 20 (aussies get tiny rims we cant go 315 275 combo)
    has anyone figured this out? are the transfomers ready for jeep yet?? BJB is testing one, i wonder if it works.
    tcm's ?? whats the go in jeeps , is there one that helps?


    has anyone figured to overome this ISSUE ???
     
  17. Aussiesrt

    Aussiesrt New Member

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    sorted,
    for anyones info , 200ml of fluid , a tcm reset , and re select final drive seems to have fixed it , 300 miles now no issues.
     
  18. 1bad4dr

    1bad4dr Mr. Meany

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    sounds like it was an easy fix once figured out? Glad to hear.
     
  19. Aussiesrt

    Aussiesrt New Member

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    converer

    well guys as i said i got the viking in with a 3200 protourque billet stator 3200 stall.
    took to track i went from a (11.6 at 115) 1.71 60; stock converter box combo down to a 12.0 .. then a 12.3 wheelspinning,

    since then i have thrown in a wavetrac rear and have yet to track it again i got a event on nov 13th with the dream to crack 11.0..
    dont seem like its gonna happen , since converter install truck feels slower ,, it may travel faster?????? but it dont feel like its usuall self
    is this the sensation any of you have experienced???