LS400 slow acceleration when warmed up
11-12-16, 06:10 PM
#16
When is Yamae not right!? He's always right and is great for this community.
FWIW I would say that MOST ECM's in u-pull-it yard cars have been repaired and usually have seals on the covers. Usually they have a date written on them. Don't rule out junkyard ECM's, always check them.
FWIW I would say that MOST ECM's in u-pull-it yard cars have been repaired and usually have seals on the covers. Usually they have a date written on them. Don't rule out junkyard ECM's, always check them.
11-13-16, 09:55 AM
#17
Lexus Champion
Hi guys,
As per the description, I have a 1995 made (1996 plated) LS400 and the thing is a rocket when cold but it is an absolute slug when it is warmed up - no CEL (OBD 1 model, Australian)
I replaced the ECT sensor to no avail, that really annoyed me making no change since it was a real pain.
It is horrendously slow when it is warm, I'm talking slow like can't keep up with a 1.8L Nissan Pulsar (or Sunny in some places).
The exhaust note changes too, it has a much more V8-ty sound cold than it does warm, WOT warm you don't really hear the engine until 4000RPM...
No surging/stalling/sputtering issues here, just lack of power.
FYI just so you guys don't jump down my throat, I don't WOT the thing after starting. I drive it 10 or so minutes sedately - that's "cold".
Warm is when it finally hits just over half way on temp gauge.
Any recommendations? MAF? O2? What could cause this?
Thanks in advance.
As per the description, I have a 1995 made (1996 plated) LS400 and the thing is a rocket when cold but it is an absolute slug when it is warmed up - no CEL (OBD 1 model, Australian)
I replaced the ECT sensor to no avail, that really annoyed me making no change since it was a real pain.
It is horrendously slow when it is warm, I'm talking slow like can't keep up with a 1.8L Nissan Pulsar (or Sunny in some places).
The exhaust note changes too, it has a much more V8-ty sound cold than it does warm, WOT warm you don't really hear the engine until 4000RPM...
No surging/stalling/sputtering issues here, just lack of power.
FYI just so you guys don't jump down my throat, I don't WOT the thing after starting. I drive it 10 or so minutes sedately - that's "cold".
Warm is when it finally hits just over half way on temp gauge.
Any recommendations? MAF? O2? What could cause this?
Thanks in advance.
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