car dies when down shifting?

[tbirch]

yesss i searched before i posted this...

okay, so when im down shifting to coast to a stop it will bog way down and die,it has a pretty smooth idle, thats why im stumped...its a ka24e...im thinking its a vacume leak...so i might just say the hell with it and do a emissions delete.

let me know of any ides...thanks

and it smells hella gassy so i think its running rich which a new development.

[biggino]

I'm having the same problem but with my sr20det? ....i need help aswell!

[KiLLeR2001]

If I'm driving along and I throw it in neutral my RPMs dip really low sometimes kills the engine... however, I think this has to do with my lightweight flywheel and atmospheric BOV... sr20det redtop. Usually when I throw it in neutral I'll blip the throttle a bit and it'll be good.

edit: my idle is a solid 850 too.

[biggino]

But my Sr20det does it in second gear too!

[MitchellBade]

Well sorry this isn't to the OP but to biggino if your BOV isn't recirculated you should do that. My car did that too, but now I'm running AEM so I don't need to recirculate. But, if you're too lazy or don't want to buy the few parts to recirculate, what I did was just brake until about 2000rpm and then engage the clutch and down shift for each gear. It rarely died when I did that. Sorry I don't have any ideas for you tbirch.

[biggino]

awesome, will try it out for sure !

thank you!

[tbirch]

well im rolling a basically stock ka24e, so i doubt its my BOV.haha

[driftboy123]

Almost the same thing happen with me. But I didnt down shift it happen when I was drivin in gear

[MitchellBade]

Yeah, I don't really have a solution for you since you don't have a BOV. I'm not that intelligent when it comes to diagnosing car problems unless my car has had the same experience.

[biggino]

well i have a power-fc d-jetro map sensor with a gt2871r...and i got it tuner 1 week ago and ever since it started but its not fully tuned!....going to try a couple things but i dought its the BOV.

[MitchellBade]

Haha that is exactly what mine was, except a bigger turbo, but Power FC with a street tune. My local tuner doesn't really know how to tune Power Fc's. He said if I recirculated my BOV it wouldn't do that AS MUCH. He said it wouldn't cure the problem, but would help drastically.

[slider2828]

Increase idle to 950 on powerfc... Open up the IACV.... check water temp, make sure it isn't adding any fuel at 80c and not have a lot of fuel added at 50c....

[tbirch]

bump!helppp, chanced MAF, ECU, and o2 sensor! still didnt work

[nismoracingsx]

check your throttle body/ throttle plate for carbon?

[bb4_96]

I think SR20's are the common factor here. Has anyone had any of these issues with LSX swaps so far?

[tbirch]

i cleaned my whole throttle body completly too, and cleaned the shit out of the IACV

[tbirch]

bump, help!