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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 09-10-2019, 06:35 PM   #1
Lehr98
 
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KA Idle wont go below 1200 rpm

Hi, I have been battling the idle air fuel ratio for a while now. I was having problems getting the idle below 2500 for a while when I unplug the tps. For the majority of the problem it was just leaks. I've replaced most hoses, I have replaced and adjusted the tps to .45v, tested two different iacv and cleaned/adjusted the spring so the valve closes. I replaced the connection to the air regulator which helped. I've seafoamed this ka, replaced the orings on the injectors, replaced the o2 sensor, replaced the pcv, etc. Pretty much everything I can think of tune up wise. The car runs way better now but I still cant get the idle down below 1200 at 15 degrees. car smells like its running rich now. I am gonna rewire the maf connector because I tapped it earlier on accident and the idle stumbled. My guess is that there is still a leak.
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Old 09-10-2019, 08:46 PM   #2
Lehr98
 
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So I replaced the cts a while ago, but I decided to clean the connection. The car idles find now and im able to adjust it normally. still smells like gas coming out the exhaust. I found out the other day that my egr solonoid was unplugged for god knows how long. and it was covered in oil. gonna clean that tomorrow
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