Transmission shudders after accelerating.
03-09-19, 09:27 AM
#1
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Transmission shudders after accelerating.
'95 LS400. When I take my foot off of the gas, regardless of how much or little I'm accelerating, the car shudders , front to back. It is intermittent but goes away wvery time I move the shifter to "3". Engine and transmission mounts are new. I think it is obvious that the transmission has an issue. Is this a common known issue?,
03-09-19, 07:43 PM
#2
If this happens around 45 mph, it's probably an issue with the ECU called "throttle shock" [1, 2]. My '95 does this as well. The fix is to install an appropriate replacement ECU (see thread 2 for the part number, which depends on the VIN and whether or not it's a California car). At some point I intend to search some junkyards for such an ECU, or else shell out the $200 for a refurbished one online.
07-01-19, 06:47 PM
#4
If this happens around 45 mph, it's probably an issue with the ECU called "throttle shock" [[url=https://www.clublexus.com/forums/ls-1st-and-2nd-gen-1990-2000/497075-1995-ls-ecu-replacement-and-damage-from-throttle-shock.html]1, 2]. My '95 does this as well. The fix is to install an appropriate replacement ECU (see thread 2 for the part number, which depends on the VIN and whether or not it's a California car). At some point I intend to search some junkyards for such an ECU, or else shell out the $200 for a refurbished one online.
you need to install a #50224 or #50225 ecu part#. I purchased a rebuild #50225 off ebay for about $150. Installed it any problem is gone. along with a few other gremlins my car had due to old ecu too.
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vapoudrier
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10-26-18 04:48 PM