Author Topic: Another ICV Saga (Read 2178 times)

SonomaGTLN2 · « **on:** July 30, 2009, 07:28:16 PM »

When I first did the swap it seemed my car had a slightly searching idle (300 rpm or so fluctuation) so I cleaned out the ICV. Ever since it's been idling nicely at 900 rpm. For curiosity sake I hooked up a dash light to see if I had any CEL codes coming. Lo and behold, the ICV code was there so I reset the code and voila, the next time I started it, no code. On the subsequent drive, I was cruising at 55mph and after 30 seconds the light comes on. When I let off the throttle, the light went off and remained off until my car was idling for about 30 seconds then came back on. It seems like at any steady-state throttle position the light will come on. After the CEL came on when idling, I checked the code and it was the ICV code again...does anyone have a clue as to what might be going on? Also worth mentioning if I unplug the ICV the code happens immediately, not after 30 seconds.

Thanks,
AJ

SonomaGTLN2 · « **Reply #1 on:** August 06, 2009, 04:08:44 PM »

Anyone?

Danny707 · « **Reply #2 on:** August 06, 2009, 04:18:54 PM »

Lambda code 1221 I'm guessing, your car is running too rich or too lean for an extended period.

nigel · « **Reply #3 on:** August 07, 2009, 12:18:12 PM »

Mine does the same thing... thought it was a small vacuum leak, but ICV issue makes more sense. Not sure what to do about it, though.

SonomaGTLN2 · « **Reply #4 on:** August 10, 2009, 05:06:10 PM »

I get around 29 mpg in my E21 brick and I powered the icv manually and it actuates so I don't know what could be wrong there. It's just strange that the light goes on and off while driving.