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iSlayeR
11th March 2016, 17:12
trying everything here, with the ICV completely removed and the hole sealed, and with the throttle adjusted and fixed into place, the cars idle is still erratic, revs start at 1krpm, then bounce to 2krpm, then idle drops and engine cuts out.

Is this a fuel problem/ecu?

edit: I can also hear a slight hiss from the intake manifold, is it normal to hear it, or could I have a vaccum leak?
Chipwizards
11th March 2016, 18:37
Sound like a vac leak.
Unplug the tps and see if the bouncing stops.
If it does and it then just idles too fast you definitely have a leak.
iSlayeR
11th March 2016, 19:06
Sound like a vac leak.
Unplug the tps and see if the bouncing stops.
If it does and it then just idles too fast you definitely have a leak.

unplugged it, nothing changed :( just put new 0 rings on the intake manifold, and cleaned the t/b and checked all the vaccum pipes, I have a vaccum gauge and it's constantly moving up and down.
Chipwizards
11th March 2016, 20:15
What does it do if you hold a very slight amount of throttle on?
iSlayeR
11th March 2016, 22:31
What does it do if you hold a very slight amount of throttle on?

idle holds steady, has to be about 1500rpm, this is using a predator ecu, with the standard ecu it holds idle at 1krpm until revved then stayed at 1500rpm, think I need my map sorted tbh, I've tried everything else now.
iSlayeR
13th March 2016, 13:41
update: when I remove the map sensor on the intake it will not die but the revs bounce, when I plug it in it dies, really thinking its the map on the car, going to book it in the garage.
Chipwizards
13th March 2016, 21:52
this is using a predator ecu.

Oh.

Best advice is bin it and fit the stock one back on...
iSlayeR
13th March 2016, 22:43
Oh.

Best advice is bin it and fit the stock one back on...

Can the standard ecu be mapped for boost?
Chipwizards
14th March 2016, 18:14
Can the standard ecu be mapped for boost?

Yes. Either type can. C2s can too....

You even get boost readings over the OBD to log with you scanner or phone app if it's a three-plug.
iSlayeR
15th March 2016, 20:52
Yes. Either type can. C2s can too....

You even get boost readings over the OBD to log with you scanner or phone app if it's a three-plug.

Got it booked in with stew on here, ecu also still has warranty on it, so hopefully gets sorted if it is the ecu at fault :y: