BIG Converter Problems HELP PLEASE
BIG Converter Problems HELP PLEASE Hey guys i got my 3400 fuddle installed last week and for the first two days it worked great except for grinding when it locked and unlocked which i was told is the pulse width modulation and will be corrected with a shift it. The car when hooked up to a scanner read 108 trans temp and that obviously isn't correct and some of the other readings were off for the trans. So.....the transmission shop told me that there is a peice inside the transmission right under the pan and beside the filter called the manifold pressure switch and that was what is bad. So i ordered that to fix that stuff just for preventive maintence when i was driving to the track sat i punched it at about 50 and the converter hasn't locked up since. The transmission shop said that the man. press. switch will fix that and now 100 bucks later it hasn't made a bit of difference. Does anyone know what is wrong and what i can do to fix this.
TECH Fanatic
Joined: Jun 2002
Posts: 1,227
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From: Indianapolis
Since no one will help i will throw out a long shot. disconnect you Neg. battery cable for a few hours. Then hook it back up and while parked put in in each gear. This helps the PCM relearn the new settings. Its worth a shot..
yea and like any converter company they say oh it can't be the converter but my stock one NEVER had any problems but now I have all this crap going wrong and thnx ws6 rocket ill give it a try
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Have you had any sort of tuning done? You cant just throw in a rather large stall and not have issues without getting some tuning done. If you havn't had any tuning, I would make that first on the list and then go from there.
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Verdad Gallardo no i didn't get a tune but i left the trans shop and the car worked fine except for the pwm but that will be fixed with a shift kit john from fuddle said. he also said that will hurt nothing it is jst the clutch trying to slip. i was driving to the track and all the sudden it decides not to lock-up. this has nothing to do with a tune i already talked to 3 companys for tunes and none of them said that a tune will fix this that it is a converter problem.
anyone else have any ideas i realize i could just unistall it and get the stock one put back in but there goes another 400 bucks to go back to stock i wish i would've went with a different converter to tell you the truth. i bought the fuddle because of price over a vig or yank or level 10 and now i wish i would've spent the actuall $$ and not had these BS problems.
Swap it yourself, it's not that hard. Then send the converter back to fuddle and have them fix it. Then put it back in yourself. Total cost = shipping and if it is a bad converter, which it sounds like it is, fuddle should cover that too.
There is a way to confirm if the tc is able to lock up by switching the lock up valve in the pump. However have you driven the vehicle with a scan tool to verify if the computer is sending a command for lockup. That is the first thing I would do. Have you installed a shift kit. I have seen if improperly installed it can cause what your describing. If you need some help call me at the shop. Good luck! 
TECH Enthusiast
Joined: Mar 2004
Posts: 647
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From: Australia
By all means, pull it out and send it back. John will pull it apart to see if it is indeed the converter. He does have a replacement warranty if the converter is a dud. But this would be the first one I have heard of.
The grinding noise you heard was the converter slipping because your tranny program was either locking it up too early, pulse width modulation (doubt it though), poor tranny fluid, something stuffed in the valve body or a combination of all the above.
PWM doesnt need a shift kit to remove it - just someone who knows what they are doing to reverse lockout the PWM valve in the valve body to permanently hold it open. You dont need to buy anything. It takes all of 60 seconds to do once the valve body is out.
As mentioned above, get someone to log it for you to see what the VCM is commanding. Its hard to diagnose problems without logging tools - and guessing does not help anyone.
What a manual pressure switch? Is it a manualised lockup?
The grinding noise you heard was the converter slipping because your tranny program was either locking it up too early, pulse width modulation (doubt it though), poor tranny fluid, something stuffed in the valve body or a combination of all the above.
PWM doesnt need a shift kit to remove it - just someone who knows what they are doing to reverse lockout the PWM valve in the valve body to permanently hold it open. You dont need to buy anything. It takes all of 60 seconds to do once the valve body is out.
As mentioned above, get someone to log it for you to see what the VCM is commanding. Its hard to diagnose problems without logging tools - and guessing does not help anyone.
What a manual pressure switch? Is it a manualised lockup?
manifold pressure switch, it is right beside the filter and controls things inside trans with the temp sensor in it. wow I spent 400 with john now another like 600 to make it rite for that I couldve had level 10 or finishline trans do it rite......the car goes mon to the trans shop to get the tcc selonoid fixed and some other sht but this was NEVER a problem with the factory converter that is the problem....the guy doing the install is good too, he does many many transmissions around here and our racecars
Last edited by Slvr98z28; Apr 19, 2006 at 10:15 AM.
Originally Posted by JNorris
It sounds like you have a bad lockup clutch in the new converter to me.
Pull the new converter and put your stock one back in and see how it does.
John
Pull the new converter and put your stock one back in and see how it does.
John
well it now will have new everything mon so I will see then if it still is bad looks like I pay 100(shipping) to make my converter rite even though it wasn't rite from fuddle from the start now I see where the xtra money goes to yank,vig ect.
i did my coverter and my dad converter on jack stands, yeah it took alot longer without a lift but it can be done, dont bitch about money if you are going to have a shop do it, do it yourself it is really easy, just takes time, anyways the shop that put the converter in should garantee there work right...I would go in there and complain it was a brand new converter...someone should pick up the slack not you...I mean if you have an audio shop put in some speakers for you and you blow them ot they stop working...95%of them will have a factory warranty or the shop will replace them...