Lean Miss on acceleration

[Ross]

Have recently acquired '92 Ti SR20. It tends to 'lean off' or hesitate on acceleration momentarily before it takes off, especially on the 2 - 3 upshift. Have had it to two mechanics, one cleaned the fuel injectors, the other had no idea. The problem is much worse when it's cold. Any idea?:confused:

[bretto]

Hmm seems to be a common problem with the sr20's :( Miine does it as well :bawlink:

Have a look at this thread http://forum.pulsar.org.au/showthread.php?s=&threadid=673&highlight=bogging

[kw]

Yeah mine does it too when its cold, but not when warm, hmmm thats a bit odd, id suggest getting someone to check the sparkies! Thats what i did and it misfires less now, is that what you mean, like you accelerate then all of a sudden it just stops then starts up again?

[Ross]

nah, it doesn't really stop or anything, just hesitates, like there is no power for just a second, and then it kicks in an gets going. Just had new platnim's in too. Very irritating anyhow.:mad:

[ssshadow]

most sr20's do this. its very common. visit sr20.net for possible solutions.

[BootySlap]

Yes very common problem. Read the thread above no one has found a real solution yet although disconnecting the O2 sensor has seemed to eliminate the hesitation, indicating a leaning out of the fuel mixture but keeping the sensor removed is supposedly not too good. The only solution at the moment seems to be a new ECU.