Talasas

UPDATE: Disregard, I completely missed pages 2 and 3 of this thread, somehow didn't see it browsing on my phone. I will post information about my issue here as it develops.

Bit of a thread dig here but what was the result of the testing? I'm having the same issues where the hunting idle is getting incrementally worse. Mine is in an (I think) 86 MPFI Turbo with the IACV on the thermostat housing and no vacuum advance on the distributor. Idle goes above 2500rpm and then cuts out. I have done pretty much all of the same things you have listed as well.

Here's a link to the guide: http://www.ultimatesubaru.org/forum/showthread.php?t=123796

Hi all, After going down the very long and expensive road of troubleshooting of why my EJ22 would idle on 3 cylinders I found the issue to be the (infamous) Jideco ignition relay. Many hours of searching showed this as a common issue but the only resolution I've seen so far was to replace it with another used item of questionable condition or try and find a brand new one. I have a solution for this which replaces the old Jideco relay with a pair of readily available aftermarket relays. Digging through some cars at a wrecking yard I found a common trend among ones with faulty ignition relays. Generally all pre 1992 models with AT seem to have this issue, in fact every one I have ever come across has shown signs of this problem. I own a manual pre 1992 model which does not have the idle issue. Among the few cars I saw in the wrecking yard, all series 2 AT models still had the original relay. If anyone can offer any more information on this please let me know. Anyway, one can simply replace the Jideco relay with a pair of suitable aftermarket relays. I have used two Bosch 0 332 019 150 relays, these are 12V 30A relays and can be had for around $8 each. Just neatly make yourself a set of blade terminals and you can plug them straight into the caramel coloured factory relay plug. I have been using this setup for almost two weeks and have had the benefit of testing it in various weather conditions and it's worked perfectly. Wiring Diagram Bosch Relay Relay Internal Diagram Terminals, I just taped the relays together Ignition Relay Plug Side

Okay, just as a follow up, I'm pretty confident I've solved my poor idle problem. It was the Ignition Relay and I have come up with a solution where you can replace the Jideco relay with a pair of aftermarket relays and it seems to work nicely. I will write up a guide on how to do this and post it in a new thread so others can fix it.

That's a fair point, I may just have to go over every single earth connection and make sure it's clean.

So what ended up happening with this? I hate it when people don't follow up threads, I've stumbled across this several years too late and I'm suffering this same problem and want it bloody well fixed. What ever happened to PacMan? He just vanished in 2009 by the looks of it.

So what ended up happening with this? I hate it when people don't follow up threads, I've stumbled across this several years too late and I'm suffering this same problem and want it bloody well fixed. What ever happened to PacMan? He just vanished in 2009 by the looks of it.