ka24de swaped into 311 troubles

[RGORILLA]

I swapped a 2004 ka24de into a 311 and I used the 2004 harness and ecu. I deleted the egr and gas vapor recirculation system and wiring. I kept the original instrument panel and gas pump. I also installed an intake manifold from a 240sx. The OBD is only showing codes for the egr PO444. The problem is that I can' get it to idle or run smoothly, I'm Thinking I need a different ecu (from the old 240sx maybe ?) or have my current ecu flashed or maybe get a megasquirt or ??? Any ideas from the group would be appreciated

[ADR]

The distance from the MAS to the throttle body needs to be managed, too close and it will cause turbulence issues and false readings. Give that a look.

Did the engine run well before the swap?

[redroadster]

04 ,you can read live data on the scan tool a pro $$$$ one see where the TPS is ...injector milsec FI temp sender before swapping the ecu s
Might clean the throttle plate ,open it fully, spray cleaner on a wash cloth and wipe where the T plate closes

[RGORILLA]

ADR, the distance between the maf and the TB is very short, about 5 inches, i'll try a different location, thanks
REDROADSTER, any recommendations on a scan tool, I am currently using TORQUE with limited tools

[ADR]

It's an important parameter. Read about it here: https://teamcpp.com/2020/10/ls-maf-sens ... t-results/

Yes, it's for an LS swap, but the point is still valid.

[redroadster]

ADR, the distance between the maf and the TB is very short, about 5 inches, i'll try a different location, thanks
REDROADSTER, any recommendations on a scan tool, I am currently using TORQUE with limited tools

That's really for the evap effect near a throttle plate ,which you'd need cold weather to affect , if the tps isn't set right it messes with idle if the air flow closed isn't the right cfm same ,the passages in the T plate clogged or filled with fluid mess up Idle

Check some bigger indep.shops that likely have a snap on that reads live data on injector time milisec , and TPS
you can read tps with a volt meter too the paper clip method ...here's a tip ,right before lunch find the tech that can help you have a premo sandwich ,see if he'd check it ..worked with me

[Mattk]

Just my 2 cents.
I went with mega squirt for the Ka24de for a 98 240sx which allowed me to delete the MAF. I’m not at home but I can get more info later but it made my life easier.

[RGORILLA]

Thank you, Thank you, Thank you, ADR For solving my problem. I extended the intake tube and the engine idles and runs great

[ADR]

Perfect! Glad that I could help. My debt to 311s.org is not paid back yet though! There are so many great team members here. Amazing....