mikeyboi

Hi all any help with the following would be very helpful as im at my wits end here, il list symptoms as best i can any questions or blanks just ask

Right after having a simtek fitted and mapped by JGM with antilag and launch control, whenever i start the engine it revs very high up to about 3k the only way to stop that is by flicking on the antilag for 5-10 seconds, the idle is also very ruff at stand still and can fluctuate from anything between 100-600rpm, this is even worse when if say slowing from 20 and you are braking as you slow and take it out of gear the engine occasionally stalls
i have replaced the Idle control valve to no change, however if i get it idling normally (800rpm) then just disconnect the idle control conector, the engine idles around 1k and does not over rev on startup as described earlier, however the engine decellaration is not as strong and seems as tho the ecu is keeping the idle slightly higher, when taken out of gear it sits at 1200 rpm for 15 or so secs then drops to 1k again

As the icv valve has been checked and replaced i dont know what to go for next? Any help would be much appreciated as its really not ideal to keep having to turn my antilag on and off all the time

Thanks mike

wrx271

iTrader: (1)

Your idle when warm should be around 1k after market ecus generally don't idle like oe ecus it's always a bit high but the fact your having issues away from that I would suggest giving jgm a call I would however stop buying bits till jgm has seen it, it could be something simple.

mikeyboi

Bump!

sandyRS16i

iTrader: (13)

I had that issue, the ISCV wouldnt reposition itself, the throttle position was so unpredictable you didnt know if the throttle would jam open or the car would stall. I did the same, manually positioned the ISCV and disconnected it, but got pissed off and went back to my mapper (repeatedly) until the ECU ended going back.

Do you have an alarm or imobilser as you need a power supply for 10 secs after engine turn off to reset the ISCV (apparently) but some alarms can cut power too early for reset to occur - if not it may be a driver issue with the ECU. Talk to the mapper.

mikeyboi

Just out of interest who was your mapper? Did you ever solve the problem? Ta mike

MartynJ

Just ask Simon to take another look at it, preferably from cold as that always helps.
It can be hard to get the cold idle right first time on an aftermarket ecu, especially if the mapper never actually gets to map it from cold.

Jolly Green Monster

iTrader: (4)

Hi Mike,

I am not aware of any contact from you, my memory can be bad but would think I would remember.

Drop me a line and we can organise taking a look.

Thanks
Simon

Jolly Green Monster

iTrader: (4)

Cant find any contact from you Mike since may 30th 2012 when the ecu was installed?

Jolly Green Monster

iTrader: (4)

Just double checked and your ecu was one of the early 99 with closed loop idle so will have the double the stepper motor on start up issue I identified and has now been sorted.
So the ecu needs swapping to resolve the issue and idle reset

Jolly Green Monster

iTrader: (4)

Feel I am talking to myself now lol.

I have a new ecu here in stock, yours needs to go back for the correction to the firmware.

If you want to hook up I can swap the ecu and load your map and check it for free obviously.

Thanks
Simon

urban

iTrader: (1)

You are

Organise to meet yourself tomorrow afternoon

Jolly Green Monster

iTrader: (4)

Already busy tomorrow afternoon

stuward

Martyn j I'm having same problem with mine at the minuet and your my mapper lol. Cuts out dead when approaching lights and fluctuating tick over

mikeyboi

Sorry was overseas and had no internet lol, text you the other day simon and sorted my remap for the 31st down at SRR so can do it then? Ta mike

MartynJ

No problem, feeel free to drop it in and I'll sort it FOC of course assuming that something isn't faulty.

Jolly Green Monster

iTrader: (4)

Sorted

stuward

Martin j

Cheers I'm away at mo but will take a drive to Plymouth when I'm back

MartynJ

No problem, whenever suits !