Internal, tuning, or stall?
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Internal, tuning, or stall? When the converter is not locked the lines on the graph are smooth and there are no hickups. But when the converter is locked the car has waves in it. This leads me to believe that is a converter lockup issue. The tranny is rebuilt, the stall is a 4000 fuddle with a 2.4 str. The car made a peak of 390rwhp locked with waves and 342rwhp unlocked. Also once its at a steady rpm you can hear it go up and down, up and down, up and down. It doesn't move the tack any but you hear it. I was thinking coils, that was until the unlocked run and it was straight and steady.
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I've been out there all morning looking for something astray, still don't see anything. Hopefully someone has experienced this bullshit. Apperently, before, my stall never locked up when cruising. That issue has been fixed, but now you hear what you see on the graph when you are driving at cruising speeds. What the hell is it?
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Well, at first driving at cruising speed it wouldn't lock. Then Ed took a ride with me and got it to lock. During the pulls it was commanded to lock and it still did the hickups. I'm really not sure what it is. I'm leaning towards stall, and thats not just the Captain Morgan talking right now.
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??? Because another tuner would be able to lock it better? You do realize, that locking the converter on the dyno, is no more than hitting a button, right? Its an override. If you lock it up, and it doesnt stay locked, or chatters in and out, it has nothing to do with the tuner, or the tune.
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Verdad Gallardo It was doing that with it commanded locked. It does it at cruise speed, with very little load.
It could be a bad electrical connection, a fluid pressure leak, a faulty clutch, several dif things.
It could be a bad electrical connection, a fluid pressure leak, a faulty clutch, several dif things.
Last edited by edcmat-l1; Nov 11, 2007 at 07:20 AM.
Thats something thats beyond most of the keyboard tuners on here. Obvious by the responses posted.
Most of these guys have no clue how to diagnose an electrical problem, what equipment to use, how to use it, nothing.
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We had a dyno day about 2 weeks ago. Dynoed a car with a Fuddle. It too would not stay locked, even though I was commanding locked. We got 1 run where it stayed locked, and couldnt make it do it again, it kept unlocking under heavy load.
Have u ever seen what kinda top end efficiency these fuddles have? Im guessing it isnt to good.......Im trapping 106 with cam and stall...when full bolt ons i was trapping 105.
It may just be that its overstalled too, not sure.
Theres reasons some converters cost 450 bucks, and others cost 900.
PS too bad it wont stay locked under WOT. You could tune it to lock up at the track, on the big end, and see what kinda gains you get.
If you look at this guys graph, it almost a 50 hp loss, locked to unlocked. And thats not even with a good locked pull. I have NEVER seen one that inefficient. And I've dynoed and tuned hundreds of cars.
It may just be that its overstalled too, not sure.
Theres reasons some converters cost 450 bucks, and others cost 900.
PS too bad it wont stay locked under WOT. You could tune it to lock up at the track, on the big end, and see what kinda gains you get.
It may just be that its overstalled too, not sure.
Theres reasons some converters cost 450 bucks, and others cost 900.
PS too bad it wont stay locked under WOT. You could tune it to lock up at the track, on the big end, and see what kinda gains you get.
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Yes....Jason here at TSP was tuning it for me and he tried 3 different pulls while comanding it to lock......u could hear it lock then we would get on it and it would stay locked for a split second then just let go. Have u ever seen what kinda top end efficiency these fuddles have? Im guessing it isnt to good.......Im trapping 106 with cam and stall...when full bolt ons i was trapping 105.
Naw i havent replaced it yet.....I just got tuned like 3 weeks ago, so i didnt know that it could handle the load when it was locked.....Mine doesnt come unlocked on the highway it was only on the dyno runs where he tried to lock it that it wouldnt hold.....It drives fine around town and on the highway......I can tell tho at the track that im lacking some topend.......Ill try and find my dyno sheets and post them up for ya.
On another note, I'm not sure your problem is in the converter.
I think its awfully loose, and soaks up too much power, but the issues you have may not be the converter itself.
??? Because another tuner would be able to lock it better? You do realize, that locking the converter on the dyno, is no more than hitting a button, right? Its an override. If you lock it up, and it doesnt stay locked, or chatters in and out, it has nothing to do with the tuner, or the tune.
I took it to MTI to get a second opinion becasue the original tuner told me my transmission was going out. MTI had it for 30 min before they found that everything about my tune was wrong. they fixed it for me and my car runs great now. The original tuner would have cost me my transmission and also my motor (the had the AFR all jacked up too).