Pic for attention
I'm working on my KA swap and am having trouble getting it to run with no load once it comes up to temp.this is an S13 KA24DE, EGR deleted, ECU is #24 for a S13 5-speed
All things run good until the coolant temp comes up to about 170 ish. Then I see AFR start to climb until the engine stumbles and dies. Reving the throttle can get it to stay alive but once back to idle it will just lean out and die. It takes about 5 seconds from taking your foot off the pedal at 14:1 AFR for it to climb up to a point of stalling.
When driving, it feels great once you're going; engine speed is up and there is load on the engine. Pulling away from a stop is not so good, as you have to fight this low speed lean issue.
Injectors are refurbished
I had a new cheap knock sensor but was getting code 34, so i jumped it out with a 560 ohm resistor. Still get code 34.
Unplug the ECU temp sensor, still same issue but with ECU code 12
unplug the MAF adn it will run but with an AFR of 9 or 10:1
I tested the TPS and found a bad wire so i replaced it. calibrated the new one and still have the same problem.
Have also fiddled with all the IACV stuff on the back of the intake manifold.
Any thoughts or help is much appreciated.