Engine cuts out at idle

Timbo_021 · Post by **Timbo_021** » Sun Jun 14, 2009 9:42 pm

Hi
Having some trouble getting the car to idle.It drives smooth and heaps of go but every so often at idle it drops from 800rpm down to 400 and sometimes even stalls.If it doesnt stall,it jumps up to 800rpm again and will randomly cut out again.The only way i can make it stop is if i put the afrs at about 10:1..Ive got rx7 n/a injectors intalled.
Has anyone else come across this?I noticed that the tp value wont go under 1024 and drops to zero sometimes, not sure why.

Thanks

Matt · Post by **Matt** » Mon Jun 15, 2009 2:06 am

whats the latency of the injectors? what have you got latency set to?

how are your AFRs looking around idle?

Timbo_021 · Post by **Timbo_021** » Wed Jun 17, 2009 9:58 pm

Ill get back to you soon,i need another wideband sensor and thats coming on the weekend.

iceblade · Post by **iceblade** » Fri Jun 19, 2009 9:21 am

jusst an idea bud, i had this problem when i had a mnor vacume leak

Timbo_021 · Post by **Timbo_021** » Sun Jun 21, 2009 7:10 pm

Fixed it up some, the afm was screwed and reading .2v at idle..
Getting it to run 14.7 at idle is still a bit hard though,the injectors are 550cc rx7 and latency should be around .8ms. If i set it to 800us in Nistune it runs like ass at around 17:1, if i put it up to 1300us its beautiful but at 11:1.
I understand that putting the wideband in the muffler at the back will make it read a bit lean?