Engine Knocking And Very Low Idle Revs

[Paul-R]

Hi,

I just picked up my celica 4 days ago, its a 2001 VVTi 140bhp model. There are two things I have noticed that concern me but it could be nothing so I hope some of you experienced celica owners can help ;)

1) the car idles at 500 revs which seems very low, is this normal? this is even at the start and end of a journey.

2) there is a faint knocking noise on the engine, you can just hear it over the engine ticking over but its a seperate noise and sounds like it shouldnt be there. It happens mostly when the car is idle at 500 revs

Any ideas?

Cheers,

Paul

[GT4 BOOSTER]

at a guess i'd recommend 800 revs tick over , noise is probably the engine just struggling to run nearly stalling on so little gas , which inturn would make it rattle and knock. ,,,, does the noise go away if you take it to 800 revs on the rev counter ???

[Paul-R]

hi maleborn1967,

The knocking/ticking sound does go away if i give it a little gass.

[Fozzy]

Hi

Mine knocks abit at low revs and yes they do idle at 500rpm the knocking noise is because the oil pressure is low when idling.youll probs find it dosnt knock at all when cold because the oil is thicker.

[Paul-R]

Thanks fozzy. Just shocked that it idles that low, my focus idled at around 1000 and so has any other car ive been in.

[Paul-R]

I took it into the Toyota garage today and the technician had a look at it. I was reading the rev counter wrong as it turns out, the first marker after the 0 is the 500 mark so mine idles at around 800 which is right. If it did rev at 500 it would be a problem.

The knocking was a timing belt so its booked in, if yours is making a slight noise you may want to get yours looked at in case.

[pete2bram]

Never Known a timing belt to cause a knock, especially a Toyota one...even if the belt is worn the ECU takes care of the timing. Three things cause that sort of knock....broken compression rings [compression test] worn big of little ends.

[Paul-R]

Never Known a timing belt to cause a knock, especially a Toyota one...even if the belt is worn the ECU takes care of the timing. Three things cause that sort of knock....broken compression rings [compression test] worn big of little ends.

Im pretty sure thats what the toyota tech said it was, will post an update next wednesday when it goes into the work shop.

Its not a loud knocking, prob more of a ticking tbh... ;)