Torque converter problems?

[Bob Wooten]

my first thought was disconnect the wire to the converter & see if it goes
away (just as you mentioned).  one other thing that you might consider is to
crawl under it & ensure that the converter bolts are tight.  I had the ones
in my car come loose a couple of years ago.  The nuts are supposed to have a
crimp built into them (TH350, don't know what my 700R has) that holds the
nuts onto the bolts that hold the converter onto the Flex plate.  I thought
that this will do until I can get new nuts.  NOT.

BW

-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Gabe
Sent: Wednesday, March 14, 2001 9:34 PM
To: gmecm at diy-efi.org
Subject: Torque converter problems?


Got a father-in-law with '92 4x2 Chev full size pickup with either a 4L60 or
700R4 tranny & a 350...

Recently it has developed a pretty nasty vibration/shudder it seems when the
torque converter locks up under light throttle & at low RPMs...  As a side
note,
my work van (92 Astro) does the same thing & has for the last couple years
(I
only put about 4-5K miles on it a year).

Is this a sign that the torque converter is preparing to expire and send
shrapnel thru the tranny or just that the ECM is getting a bad signal from
somewhere or is in need of reprogramming for better lock up points?  Don't
really have much experience with lock up converters & OD tranny's - have
always
had TH400s or TH350s.

We were contemplating disconnecting the wires for the lock up converter for
the
time being to see if that would cure the problem for now.

TIA for any input.  BTW, the truck has not had any programming work done to
it.

Gabe

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