PLEASE HELP-AE112 Idle Problem

[White112Rolla]

My 2000 Corolla conquest recently became more difficult to start, has a low idle(idles at 500RPM) and seems to have lost power within two weeks after putting a 2" Sports Exhaust from the cat back.I know the exhaust must be contributing in one way or another, as the car drove and idled fine before the exhaust was replaced.

Can anyone tell me what is causing the low idle and lack of power, could it possibly be not getting enough fuel?

Can anyone help please, it would greatly be appreciated

Edited February 7, 2010 by RO11AN

[123R-Prozak]

o2 sensor have anything to do with it? did the new exhaust come with a sensor ?

[SuperDave]

Restrictive exhausts can affect idle; as in if something has come lose and is blocking it. I assume this isn't the case since you don't mention a rattle.

What size pipe do they come with from Toyota?

[Lawz]

Had service yet? Intake filter clogged/needs a clean? Loose spark plug leads? Fuel filter/pump clogged?

[Guni]

Check ur sparks.

[White112Rolla]

Restrictive exhausts can affect idle; as in if something has come lose and is blocking it. I assume this isn't the case since you don't mention a rattle.

What size pipe do they come with from Toyota?

Mine was a 1.75" when i bought it, I assume that was the factory one

[White112Rolla]

o2 sensor have anything to do with it? did the new exhaust come with a sensor ?

I was thinking the o2 sensor may have something wrong, but as far as I know the sensor is still the same one.

[White112Rolla]

Had service yet? Intake filter clogged/needs a clean? Loose spark plug leads? Fuel filter/pump clogged?

Yes, had it serviced about three weeks ago and the mechanic said it was in perfect mechanical order and that it was a strong engine, but I got the exhaust two days later and noticed a lower idle and a lack of power on acceleration straight away, I let my dad take it for a drive as he owned it for 8 years from new and he said it is completly different to drive now and agrees it is now lacking power

[White112Rolla]

Any one reckon it would be a good idea to replace air filter and see if it helps with problem, I took it out today and gave it a quick clean. and the idle is a bit better. Does anyone know what a AE112R Auto should idle at?

[eviltwin]

Take it back and explain the issue to them and ask them to inspect the system for defects

[SuperDave]

o2 sensor have anything to do with it? did the new exhaust come with a sensor ?

I was thinking the o2 sensor may have something wrong, but as far as I know the sensor is still the same one.

o2 sensors do fail. But I would be taking it back to the exhaust shop for them to sort out.

Take it back and explain the issue to them and ask them to inspect the system for defects

Do this

[White112Rolla]

Ok, I think problem is solved. Exhaust had water in it, as we have had terential rain here in the Illawarra for the past week. I just recalled that when the car started mucking up was when the last tank of petrol went in, which is E10, so not putting petrol with ethanol in again, as I now know the effect of it on my engine. Other wise car runs brilliant again. :D