Bouncing idle Cause?

Mikey22 · July 18, 2012, 08:51:54 AM

Hey Guys,

I managed to fix my hunting idle, secured all vacuum lines and set up so when it first turns on it idles at around 1200 for a few minutes then drops to around the 800-850 mark.

However i\'ve notice that when i turn the lights on the idle just goes! jumps from 850 to about 14-1500 then back down and repeats that over and over.

Does this sound like just a bad earth?

Cheers

Mike

m1tch · July 18, 2012, 08:57:25 AM

Sounds like the car is hunting, it might be that the TPS needs adjusting.

Mikey22 · July 18, 2012, 09:36:25 AM

Its strange as i chacked that the TPS was in the range of 0.70, well actually its set at 0.71 but i didnt think 0.01 out would cause such a problem.

Ill try adjusting again tonight.

m1tch · July 18, 2012, 10:43:47 AM

How did you adjust it? AFAIK you use those little LEDs to get the range correct.

Mikey22 · July 18, 2012, 11:10:09 AM

I matched up the readings on the apexi commander. Just by turning the tps till the reading for vta1 was at 0.70ish

Not sure about any LEDs etc.

m1tch · July 18, 2012, 12:07:13 PM

Mazda did sell an LED thing that you can use, I think Prof just made his own lol but here is a good write up on how to adjust:

http://fc3spro.com/TECH/HOWTO/TPS/tps.html

philiwily · July 18, 2012, 12:08:42 PM

Try turning the electrical load idle up by 50rpm using the commander.

Mikey22 · July 18, 2012, 01:17:37 PM

Thanks Philiwily i\'ll give it a go

m1tch thanks for the link, even though thats for an FC will it work on the FD too?

Cheers