S14Ryan
01-02-2014, 09:13 AM
Hey guys,
I have an RB20 swapped S13 that i've been trying to diagnose a problem on and I am stumped at this point and need some assistance. It seems that my car is very slow to lose revs once it hits about 2500 RPM on the KA tach(so the RPMs are inaccurate but just for the sake of explaining) and I did a boost/vacuum leak test and everything was fine and holding pressure. I had originally thought it was a vacuum leak causing it to let in air past the TB. I have a feeling it may be the IACV but i'm not sure how I would go about testing it, I tried unplugging it and it didn't seem to do anything or run better. The car also runs fairly rich and has a misfire at idle when it starts to warm up, however the cold idle doesn't miss as much. That may just be ignition coils. I also noticed the oxygen sensor is not plugged in and I could not seem to find the pigtail on the harness for it, but i'm not sure if that would be a problem?
Any insight would be greatly appreciated!
Video of revs hanging:
https://www.youtube.com/watch?v=bNLQ_HdSvM4
I have an RB20 swapped S13 that i've been trying to diagnose a problem on and I am stumped at this point and need some assistance. It seems that my car is very slow to lose revs once it hits about 2500 RPM on the KA tach(so the RPMs are inaccurate but just for the sake of explaining) and I did a boost/vacuum leak test and everything was fine and holding pressure. I had originally thought it was a vacuum leak causing it to let in air past the TB. I have a feeling it may be the IACV but i'm not sure how I would go about testing it, I tried unplugging it and it didn't seem to do anything or run better. The car also runs fairly rich and has a misfire at idle when it starts to warm up, however the cold idle doesn't miss as much. That may just be ignition coils. I also noticed the oxygen sensor is not plugged in and I could not seem to find the pigtail on the harness for it, but i'm not sure if that would be a problem?
Any insight would be greatly appreciated!
Video of revs hanging:
https://www.youtube.com/watch?v=bNLQ_HdSvM4