20v idles again... ECU related?

[andrewgreen1000]

So I put my new sard ecu, and it seems pretty good!


But now I have an Idle problem, which I didn't with my old ecu, cold Idle seems fine, maybe a bit low with about 1500RPM.

But when it warms up it tries to idle at around 400rpm, and the whole car shakes. Sometimes dips a bit lower (350ish) then comes back up to 400. after sitting at the lights for a little while it will come back up to about 900, but not often.

Would this be The new ECU? or another problem? ISCV, I sprayed a whole bunch of carby cleaner into it about 2 months ago when it was hunting for idle, and it seemed fine.

I checked for codes and got code 21 Oxygen sensor, which I kinda expected for how old the car is. This wouldn't effect it would it?

I've had a look around at the vaccuum hoses, and all seem pretty good, don't look perished etc. and nothing changed yesterday except for the ECU and I put some petrol in it (98).

Do you guys think its a broken ecu? I hope not, I don't really want to have to send it back to the guy and tell him its faulty. Other than idle it seems pretty good!

[Mr Revhead]

Check the timing, SARD ecus alter it quite a bit.

[RS13]

FWIW, my AE101 ran better with the O2 sensor unplugged.

[sergei]

FWIW, my AE101 ran better with the O2 sensor unplugged.

because it was most likely stuffed.

[lee90]

ther are many causes ecu,timing,air,
but sard ecu seem to go for one thing mid mod on the engine.
if no mod don't put sard ecu.

[Mr Revhead]

SARD ecu made massive improvements on my stock 20v.
They would also have done ECU's for modded engines as they are reflashable

[andrewgreen1000]

Yeah its definitely the ecu. The guy i bought it off said this had happened to him before, and he had got it repaired as there was a broken solder joint, and that fixed it. As I am not a pro electrical wizz, is there anyone in particular I should be taking it to? or anyone on here which is good with these kind of things, who could fix it for me for cheep, seeing as i spent all my money (and some "Transport" course related costs) on the ECU.

BTW I agree with Revhead, stock and slightly modded (like me) still get gains from the sard ECU.

[Bling]

You could talk to Matt Dunn, tis good with electronics

[MAGN1T]

It's a waste of time looking for new faults when you've got existing ones that you couldn't be bothered fixing.

Steve

[Dell'Orto]

wat

[Alex B]

wat

You know what. Teh master has spoken.

[Mr Revhead]

It's a waste of time looking for new faults when you've got existing ones that you couldn't be bothered fixing.

Steve

[Bling]

Just me that thinks he might be referring to the engine code saying dud o2 sensor?

But priority is to fix the new ecu?

Question is, does the engine bring up the same code with factory ecu in place?

[Boost_4_Life]

can you still buy these sard ecu's? how much are they?

[RS13]

FWIW, my AE101 ran better with the O2 sensor unplugged.

because it was most likely stuffed.

Oh yeah, without a doubt. But unplugging it is a whole lot cheaper than a couple of hundred for a new sensor.

[sergei]

FWIW, my AE101 ran better with the O2 sensor unplugged.

because it was most likely stuffed.

Oh yeah, without a doubt. But unplugging it is a whole lot cheaper than a couple of hundred for a new sensor.

Tried blow torch on it?

[DUGDUG]

FWIW, my AE101 ran better with the O2 sensor unplugged.

because it was most likely stuffed.

Oh yeah, without a doubt. But unplugging it is a whole lot cheaper than a couple of hundred for a new sensor.

Tried blow torch on it?

It does work for a while until it gets all carboned up again.